Minor-planet moon

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243 ida.jpg
Asteroid 1994 KW4.jpg
Radar images of 2004 BL86 and its moon.gif 1994CC-with-moons.gif

A minor-planet moon is an astronomical object that orbits a minor planet as its natural satellite. As of November 2021, there are 447 minor planets known or suspected to have moons. [1] Discoveries of minor-planet moons (and binary objects, in general) are important because the determination of their orbits provides estimates on the mass and density of the primary, allowing insights of their physical properties that is generally not otherwise possible. [2]

Contents

Several of the moons are quite large compared to their primaries: 90 Antiope, Mors–Somnus and Sila–Nunam (95%), Patroclus–Menoetius, Altjira and Lempo–Hiisi (90%, with LempoPaha at 50%). The largest known minor-planet moon in absolute size is Pluto's largest moon Charon, which itself has about half the diameter of Pluto.

The first modern era mention of the possibility of an asteroid satellite was in connection with an occultation of the bright star Gamma Ceti by the asteroid 6 Hebe in 1977. The observer, amateur astronomer Paul D. Maley, detected an unmistakable 0.5 second disappearance of this naked eye star from a site near Victoria, Texas. Many hours later, several observations were reported in Mexico attributed to the occultation by 6 Hebe itself. Although not confirmed, this documents the first formally documented case of a suspected companion of an asteroid. [3]

There are also several known ring systems around distant objects (see: rings of Chariklo and Chiron).

Terminology

In addition to the terms satellite and moon, the term "binary" (binary minor planet) is sometimes used for minor planets with moons, and "triple" for minor planets with two moons. If one object is much bigger it can be referred to as the primary and its companion as secondary. The term double asteroid is sometimes used for systems in which the asteroid and its moon are roughly the same size, while binary tends to be used independently from the relative sizes of the components. When binary minor planets are similar in size, the Minor Planet Center (MPC) refers to them as "binary companions" instead of referring to the smaller body as a satellite. [4] A good example of a true binary is the 90 Antiope system, identified in August 2000. [5] Small satellites are often referred to as moonlets. [2] [6]

Discovery milestones

Prior to the era of the Hubble Space Telescope and space probes reaching the outer Solar System, attempts to detect satellites around asteroids were limited to optical observations from Earth. For example, in 1978, stellar occultation observations were claimed as evidence of a satellite for the asteroid 532 Herculina. [7] However, later more-detailed imaging by the Hubble Telescope did not reveal a satellite, and the current consensus is that Herculina does not have a significant satellite. [8] There were other similar reports of asteroids having companions (usually referred to as satellites) in the following years. A letter by astronomer Thomas Hamilton in the Sky & Telescope magazine at this time pointed to apparently simultaneous impact craters on Earth (for example, the Clearwater Lakes in Quebec), suggesting that these craters were caused by pairs of gravitationally bound objects. [9]

Also in 1978, Pluto's largest moon Charon was discovered; however, at the time Pluto was still considered to be one of the major planets.

In 1993, the first asteroid moon was confirmed when the Galileo probe discovered the small Dactyl orbiting 243 Ida in the asteroid belt. The second was discovered around 45 Eugenia in 1998. [10] In 2001, 617 Patroclus and its same-sized companion Menoetius became the first known binary asteroids in the Jupiter trojans. [11] The first trans-Neptunian binary after Pluto–Charon, 1998 WW31 , was optically resolved in 2002. [12]

Multiple systems

In 2005, the asteroid 87 Sylvia was discovered to have two satellites, making it the first known triple system (also called trinary minor planets). [13] This was followed by the discovery of a second moon orbiting 45 Eugenia. [14] Also in 2005, the dwarf planet Haumea was discovered to have two moons, making it the second trans-Neptunian object after Pluto known to have more than one moon. [15] Additionally, 216 Kleopatra [16] and 93 Minerva [17] were discovered to be trinary asteroids in 2008 and 2009 respectively. Since the first few triple minor planets were discovered, more continue to be discovered at a rate of about one a year. Most recently discovered were two moons orbiting large near-earth asteroid 3122 Florence, bringing the number of known trinary systems in the Solar System up to 16 (including the Pluto system).

The following table lists all satellites of triple systems (or higher multiplicities) chronologically by their discovery date, starting with Charon, discovered in 1978. The highest known multiplicities are for Pluto (a sextuple system) and 130 Elektra (a quadruple system).

Parent bodyMinor-planet moon
DesignationOrbital classDesignationDiscovery
date
Announcement
date
Announcement
of trinary
134340 Pluto TNO Charon 1978/06/221978/07/072005/10/31
45 Eugenia Asteroid belt Petit-Prince 1998/11/011999/03/202007/03/07
87 Sylvia Romulus 2001/02/182005/08/112005/08/11
107 Camilla S/2001 (107) 12001/03/012001/03/192016/08/07
47171 Lempo TNO Paha 2001/12/082002/01/102009/10/??
3749 Balam Asteroid beltS/2002 (3749) 12002/02/082002/02/132008/03/12
130 Elektra S/2003 (130) 12003/08/152003/08/172014/12/16
45 Eugenia S/2004 (45) 12004/02/142007/03/072007/03/07
87 Sylvia Remus 2004/08/092005/08/112005/08/11
136108 Haumea TNO Hiʻiaka 2005/01/262008/09/172008/09/17
134340 Pluto Nix 2005/05/152005/10/312005/10/31
Hydra
136108 Haumea Namaka 2005/06/302008/09/172008/09/17
3749 Balam Asteroid beltS/2007 (3749) 12007/07/152008/03/122008/03/12
(153591) 2001 SN263 Amor Beta (unofficial)2008/02/122008/02/122008/02/12
Gamma (unofficial)
216 Kleopatra Asteroid beltAlexhelios2008/09/192011/02/182011/02/18
Cleoselene
2577 Litva Mars-crosserS/2009 (2577) 12009/02/282009/03/112013/12/22
(136617) 1994 CC Apollo Beta (unofficial)2009/06/122009/06/192009/06/19
Gamma (unofficial)
47171 Lempo TNO Hiisi 2009/10/??2009/10/??2009/10/??
93 Minerva Asteroid beltAegis2009/08/162013/12/172013/12/17
Gorgoneion
134340 Pluto TNO Kerberos 2011/06/282013/07/022005/10/31
2577 Litva Mars-crosser S/2012 (2577) 12012/06/222013/12/222013/12/22
134340 Pluto TNO Styx 2012/06/262013/07/022005/10/31
130 Elektra Asteroid beltS/2014 (130) 12014/12/062014/12/162014/12/16
4666 Dietz S/2015 (3666) 12015/09/022015/10/??2018/07/20
S/2015 (3666) 22015/09/022018/07/202018/07/20
107 Camilla S/2016 (107) 12015/05/292016/08/072016/08/07
6186 Zenon S/2017 (6186) 12017/01/012017/01/142017/01/14
S/2017 (6186) 2
3122 Florence AmorS/2017 (3122) 12017/08/292017/09/012017/09/01
S/2017 (3122) 2
130 Elektra Asteroid beltS/2014 (130) 22014/12/092021/11/062014/12/16

Commonality

The data about the populations of binary objects are still patchy. In addition to the inevitable observational bias (dependence on the distance from Earth, size, albedo and separation of the components) the frequency appears to be different among different categories of objects. Among asteroids, an estimated 2% would have satellites. Among trans-Neptunian objects (TNOs), an estimated 11% are thought to be binary or multiple objects, and the majority of the large TNOs have at least one satellite, including all four IAU-listed dwarf planets.

More than 50 binaries are known in each of the main groupings: near-Earth asteroids, belt asteroids, and trans-Neptunian objects, not including numerous claims based solely on light-curve variation.

Two binaries have been found so far among centaurs with semi-major axes smaller than Neptune. [18] Both are double ring systems around 2060 Chiron and 10199 Chariklo, discovered in 1994–2011 and 2013 respectively.

Origin

The origin of minor-planet moons is not currently known with certainty, and a variety of theories exist. A widely accepted theory is that minor-planet moons are formed from debris knocked off the primary by an impact. Other pairings may be formed when a small object is captured by the gravity of a larger one.

Formation by collision is constrained by the angular momentum of the components, i.e. by the masses and their separation. Close binaries fit this model (e.g. PlutoCharon). Distant binaries however, with components of comparable size, are unlikely to have followed this scenario, unless considerable mass has been lost in the event.

The distances of the components for the known binaries vary from a few hundreds of kilometres (243 Ida, 3749 Balam) to more than 3000 km (379 Huenna) for the asteroids. Among TNOs, the known separations vary from 3,000 to 50,000 km. [18]

Populations and classes

What is "typical" for a binary system tends to depend on its location in the Solar System (presumably because of different modes of origin and lifetimes of such systems in different populations of minor planets). [19]

The eight largest TNOs with moons (Pluto, Haumea, Makemake, Eris, Quaoar, Gonggong, Orcus and Salacia), with the Earth to scale. Gonggong is written as its provisional designation, 2007 OR10. Eight TNO moonorbits.png
The eight largest TNOs with moons (Pluto, Haumea, Makemake, Eris, Quaoar, Gonggong, Orcus and Salacia), with the Earth to scale. Gonggong is written as its provisional designation, 2007 OR10.

List

As of November 2021, there are 447 minor planets (systems) with 467 known companions. [1] The following table is a listing of the total number of these systems by orbital class:

# of Systems Orbital class List by classDescription
85 Near-Earth objects go to list Three systems with two satellites: 3122 Florence, (136617) 1994 CC , and (153591) 2001 SN263 .
31 Mars-crossing asteroids go to list One system with two satellites: 2577 Litva.
209 Main-belt asteroids go to list Eight systems with two satellites: 45 Eugenia, 87 Sylvia, 93 Minerva, 107 Camilla, 216 Kleopatra, 3749 Balam, 4666 Dietz, 6186 Zenon; and one quadruple system with three satellites: 130 Elektra.
6 Jupiter trojans go to list
116 Trans-Neptunian objects go to list Two systems with two satellites: 47171 Lempo and 136108 Haumea; one system with five satellites: 134340 Pluto. [1] [21]

Near-Earth objects

This is a list of near-Earth asteroids with companions. [1] Candidate binaries with an unconfirmed status are displayed on a dark background. [22] For an overview, see summary and introduction.

SystemPrimarySecondaryRefs
Designation Class D e
(km)
s/p-ratioYOD D p
(km)
RT p
(hours)
DesignationYOD D s
(km)
RT s
(hours)
a s
(km)
P s
(hours)
1862 Apollo APO 1.550.05219321.553.065S/2005 (1862) 120050.083.7527.36 BIN JPL LoMP LCDB
1866 Sisyphus APO8.480.119728.442.3909S/1985 (1866) 119850.841927.12 BIN JPL LoMP LCDB
3122 Florence AMO 4.400.04
0.04
19814.42.3581S/2017 (3122) 120170.24.67.2 BIN JPL LoMP LCDB
S/2017 (3122) 220170.39.824
3671 Dionysus AMO1.460.219841.432.705S/1997 (3671) 119970.293.427.744 BIN JPL LoMP LCDB
5143 Heracles APO 3.650.16719913.62.706S/2011 (5143) 120110.6415.5 BIN JPL LoMP LCDB
5381 Sekhmet ATE 1.040.3199112.7S/2003 (5381) 120030.3101.5412.5 BIN JPL LoMP LCDB
(5646) 1990 TR AMO 2.720.18+19902.683.1999S/2012 (5646) 120120.485.119.4712 BIN JPL LoMP LCDB
7088 Ishtar AMO 1.510.4219921.392.679S/2006 (7088) 120060.332.820.6496 BIN JPL LoMP LCDB
(7888) 1993 UC APO 2.7219932.722.34S/2013 (7888) 120137.735.04 BIN JPL LoMP LCDB
15745 Yuliya AMO 1.20.46+19910.61+3.2495S/2018 (15745) 120180.28+11.735 BIN JPL LoMP LCDB
(31345) 1998 PG AMO0.940.319980.92.51620S/2001 (31345) 120010.271.414.0064 BIN JPL LoMP LCDB
(31346) 1998 PB1 AMO 1.260.38+19981.182.7358S/2012 (31346) 120210.45+4.655.39 BIN JPL
LoMP LCDB
(35107) 1991 VH APO 1.120.419911.042.624S/1997 (35107) 119970.423.2632.64 BIN JPL LoMP LCDB
(53110) 1999 AR7 AMO 1.50.41+19991.42.7375S/2015 (53110) 120150.6+3.831.32 BIN JPL LoMP LCDB
65803 Didymos AMO0.770.2219960.752.259 Dimorphos
S/2003 (65803) 1
20030.171.1811.8992 BIN JPL LoMP LCDB
(66063) 1998 RO1 ATE 0.890.4819980.82.492S/2002 (66063) 120020.381.214.5392 BIN JPL LoMP LCDB
66391 Moshup ATE1.390.34119991.3172.7645 Squannit
S/2001 (66391) 1
20010.45117.42.54817.4216 BIN JPL LoMP LCDB
(68063) 2000 YJ66 AMO 2.320002.32.1102S/2014 (68063) 120143.815.7 BIN JPL LoMP LCDB
69230 Hermes APO 0.810.919370.613.894S/2003 (69230) 120030.5413.8921.113.8936 BIN JPL LoMP LCDB
(85275) 1994 LY AMO 2.510.24+19942.442.696S/2020 (85275) 120200.59+4.216.6238 BIN JPL LoMP LCDB
(85938) 1999 DJ4 APO0.480.519990.432.514S/2004 (85938) 120040.210.817.7312 BIN JPL LoMP LCDB
(88710) 2001 SL9 APO10.2820010.962.4S/2001 (88710) 120010.21.616.399 BIN JPL LoMP LCDB
(136617) 1994 CC APO0.640.182
0.129
19940.622.3886Beta
S/2009 (136617) 1
20090.1131.72929.832 BIN JPL LoMP LCDB
Gamma
S/2009 (136617) 2
20090.086.130201.024
(136993) 1998 ST49 APO0.690.10919980.692.302S/2012 (136993) 120120.08 BIN JPL LoMP LCDB
(137170) 1999 HF1 ATE 3.730.2319993.642.319S/1999 (137170) 119990.847.314.01696 BIN JPL LoMP LCDB
(138095) 2000 DK79 AMO 2.1820002.184.243S/2013 (138095) 12013 BIN JPL LoMP LCDB
(143649) 2003 QQ47 APO 0.9950.3320030.942.6446S/2021 (143649) 120210.3113.0651.413.07 BIN JPL
LoMP LCDB
(153591) 2001 SN263 AMO2.850.408
0.177
20012.63.425Beta
S/2008 (153591) 1
20081.0616.633149.4 BIN JPL LoMP LCDB
Gamma
S/2008 (153591) 2
20080.463.80416.464
(153958) 2002 AM31 APO 0.460.2520020.452.817S/2012 (153958) 120120.111.526.304 BIN JPL LoMP LCDB
(162000) 1990 OS APO0.30.16719900.32.536S/2003 (162000) 120030.050.621 BIN JPL LoMP LCDB
(162483) 2000 PJ5 ATE 0.620.520000.552.642S/2005 (162483) 120050.281.0514.16 BIN JPL LoMP LCDB
163693 Atira ATI 4.90.2120034.82.9745S/2017 (163693) 120171615.504 BIN JPL LoMP LCDB
(164121) 2003 YT1 APO 1.120.19120031.12.343S/2004 (164121) 120040.213.9336.696 BIN JPL LoMP LCDB
(175706) 1996 FG3 APO1.690.2819961.693.595195S/1998 (175706) 119980.4916.15316.1508 BIN JPL LoMP LCDB
(185851) 2000 DP107 APO0.850.4120000.82.774S/2000 (185851) 120000.32.6242.192 BIN JPL LoMP LCDB
(190166) 2005 UP156 AMO 1.0520051.04540.542S/2017 (190166) 12017 BIN JPL LoMP LCDB
(190208) 2006 AQ AMO1.0620061.06182S/2015 (190208) 120152.62 BIN JPL LoMP LCDB
(226514) 2003 UX34 APO 0.280.520030.25S/2017 (226514) 120170.1 BIN JPL LoMP LCDB
(250162) 2002 TY57 AMO 0.380.18+20020.372.5001S/2018 (250162) 120180.07+0.510.76 BIN JPL LoMP LCDB
(276049) 2002 CE26 APO3.460.08720023.463.2931S/2004 (276049) 120040.34.715.6 BIN JPL LoMP LCDB
(285263) 1998 QE2 AMO 3.090.2519983.24.751S/2013 (285263) 120130.81.30466.21231.3104 BIN JPL LoMP LCDB
(285571) 2000 PQ9 AMO 120001S/2021 (285571) 12021 BIN JPL
LoMP LCDB
(310560) 2001 QL142 APO 0.9220010.92S/2017 (310560) 12017 BIN JPL LoMP LCDB
(311066) 2004 DC APO0.370.220040.362.6S/2006 (311066) 120060.0770.7523.04 BIN JPL LoMP LCDB
(326732) 2003 HB6 AMO 0.950.2320030.933.463S/2021 (326732) 120210.2122.92222.92 BIN JPL
LoMP LCDB
(348400) 2005 JF21 AMO 0.60.1820050.62.4144S/2015 (348400) 120150.110.914.736 BIN JPL LoMP LCDB
(357439) 2004 BL86 APO 0.330.2120040.322.6S/2015 (357439) 120150.070.514.4 BIN JPL LoMP LCDB
(363027) 1998 ST27 ATE 0.810.1519980.83-S/2001 (363027) 120010.12<64.598.4 BIN JPL LoMP LCDB
(363067) 2000 CO101 APO 0.620.06520000.625.12S/2009 (363067) 120090.040.617.2 BIN JPL LoMP LCDB
(363599) 2004 FG11 APO0.170.53320040.154-S/2012 (363599) 120120.08-0.2520 BIN JPL LoMP LCDB
(374851) 2006 VV2 APO1.820.2820061.062.41S/2007 (374851) 120070.3+1.55.52 BIN JPL LoMP LCDB
(385186) 1994 AW1 AMO 1.040.4919940.942.519S/1994 (385186) 119940.46222.3296 BIN JPL LoMP LCDB
(399307) 1991 RJ2 AMO0.550.47+19910.53.4907S/2014 (399307) 120140.2415.9170.8615.91704 BIN JPL LoMP LCDB
(399774) 2005 NB7 APO 0.540.32+20050.53.4883S/2008 (399774) 120080.215.2670.615.2808 BIN JPL LoMP LCDB
(410777) 2009 FD APO0.170.620090.154S/2015 (410777) 120150.090.2514.4 BIN JPL LoMP LCDB
(450894) 2008 BT18 APO0.630.33320080.62.726S/2008 (450894) 120080.2+1.528.8 BIN JPL LoMP LCDB
(452561) 2005 AB AMO 1.950.2420051.9+3.339S/2005 (2005 AB) 120050.463.417.9304 BIN JPL LoMP LCDB
(461852) 2006 GY2 APO 0.410.220060.42.27S/2006 (461852) 120060.080.511.7 BIN JPL LoMP LCDB
(481532) 2007 LE APO0.530.3620070.52.603S/2012 (461852) 120120.181.433.504 BIN JPL LoMP LCDB
(488453) 1994 XD APO0.620.2519940.62.736S/2005 (488453) 120050.15+0.617.976 BIN JPL LoMP LCDB
(489486) 2007 GS3 APO1.0670.4620070.973.497S/2019 (489486) 120190.4541.363.241.36 BIN JPL LoMP LCDB
(494658) 2000 UG11 APO0.290.520000.264.44S/2000 (494658) 120000.130.42618.4 BIN JPL LoMP LCDB
(523625) 2008 DG17 APO0.3820080.38S/2013 (523625) 12013 BIN JPL LoMP LCDB
(523775) 2014 YB35 APO0.340.5-20140.3S/2015 (523775) 120150.15- BIN JPL LoMP LCDB
1994 CJ1 APO0.21-119940.15-30S/2014 (1999 CJ1) 120140.15-0.52530 BIN JPL LCDB
1999 RM45 APO 0.1810.4519990.1653.0697S/2021 (1999 RM45) 120210.074-0.2916.4448 BIN JPL LCDB
2002 BM26 AMO 0.610.16720020.62.7S/2002 (2002 BM26) 120020.11.425.8 BIN JPL LCDB
2002 KK8 AMO0.510.220020.5S/2002 (2002 KK8) 120020.1 BIN JPL LCDB
2003 SS84 APO 0.130.520030.12S/2003 (2003 SS84) 120030.060.2724 BIN JPL LCDB
2005 YQ96 ATE 0.2720050.27rot.S/2014 (2005 YQ96) 12014 BIN JPL LCDB
2007 DT103 APO 0.310.26720070.32.703S/2007 (2007 DT103) 120070.08+0.4513.44 BIN JPL LCDB
2013 PY6 AMO 0.530.2420130.523.6246S/2020 (2013 PY6) 120200.12-1.227.312 BIN JPL LCDB
2013 WT44 APO1.32201312.8849S/2014 (2013 WT44) 12014 BIN JPL LCDB
2014 WZ120 APO0.30.32+20140.33.361S/2014 (2014 WZ120) 120140.10.513.665 BIN JPL LCDB
2015 TD144 APO0.120150.1S/2015 (2015 TD144) 12015 BIN JPL LCDB
2016 AZ8 APO0.470.4320160.427-S/2019 (2016 AZ8) 120190.18-<400.42+7.2 BIN JPL LCDB
2017 RV1 APO0.320170.3S/2017 (2017 RV1) 12017 BIN JPL LCDB
2017 YE5 APO1.3120170.920.6S/2018 (2017 YE5) 120180.92.422.08 BIN JPL LCDB
2018 EB APO0.240.16720180.241.2S/2018 (2018 EB) 120180.04 BIN JPL LCDB
2018 TF3 APO0.280.2320180.272.4398S/2018 (2018 TF3) 120180.062.34980.3510.512 BIN JPL LCDB
2020 AZ2 AMO0.1920200.19S/2020 (2020 AZ2) 12020 BIN JPL LCDB
2020 BX12 APO0.180.4220200.1652.8S/2020 (2020 BX12) 120200.07<490.3647.04 BIN JPL LCDB

Mars crossers

This is a list of Mars-crossing asteroids with companions. [1] Candidate binaries with an unconfirmed status are displayed on a dark background. [22] For an overview, see summary and introduction.

SystemPrimarySecondaryRefs
Designation Class D e
(km)
s/p-ratioYOD D p
(km)
RT p
(hours)
DesignationYOD D s
(km)
a s
(km)
P s
(hours)
1139 Atami cls.7.810.8331929627.45S/2005 (1139) 12005515+27.456 BIN JPL LoMP LCDB
1656 Suomi H 7.860.26+19427.612.5885S/2020 (1656) 120201.98+3057.92 BIN JPL LoMP LCDB
1727 Mette cls.10.40.21196510.182.98109S/2013 (1727) 120132.142120.99 BIN JPL LoMP LCDB
2044 Wirt cls.6.660.2519506.463.6898S/2006 (2044) 120061.621218.9696 BIN JPL LoMP LCDB
2449 Kenos cls.6.20.23197863.8481S/2015 (2449) 120151.41015.84 BIN JPL LoMP LCDB
2577 Litva cls.4.40.35
0.3
197542.813S/2009 (2577) 120091.42135.88 BIN JPL LoMP LCDB
S/2012 (2577) 120121.23785136
3873 Roddy cls.7.510.2719847.252.47900S/2012 (3873) 120121.961419.24 BIN JPL LoMP LCDB
4435 Holt cls.5.030.34+19834.762.867S/2017 (4435) 120171.62+1642.648 BIN JPL LoMP LCDB
5261 Eureka cls.1.280.39+19901.192.6902S/2011 (5261) 120110.462.116.9296 BIN JPL LoMP LCDB
(5407) 1992 AX cls.3.980.219923.92.549S/1997 (5407) 119970.785.813.5192 BIN JPL LoMP LCDB
7002 Bronshten cls.3.120.24+19713.032.67025S/2018 (7002) 120180.73+4.513.32 BIN JPL LoMP LCDB
7369 Gavrilin cls.7.920.32+19757.5449.12S/2007 (7369) 120072.412749.128 BIN JPL LoMP LCDB
8373 Stephengould unus. 5.480.27-19925.294.435S/2010 (8373) 120101.431534.152 BIN JPL LoMP LCDB
12008 Kandrup cls.4.20.7519963.432.9034S/2016 (12008) 120162.61032.904 BIN JPL LoMP LCDB
13920 Montecorvino cls.2.810.22+19852.812.20231S/2020 (13920) 12020--15.475 BIN JPL LoMP LCDB
(15700) 1987 QD cls.4.150.3119873.963.0586S/2010 (15700) 120101.231450.4 BIN JPL LoMP LCDB
(16635) 1993 QO cls.4.770.27+19934.617.622S/2007 (16635) 120071.241232.256 BIN JPL LoMP LCDB
(23621) 1996 PA cls.2.50.27+19962.42.6649S/2017 (23621) 120170.65520.60 BIN JPL LoMP LCDB
24495 Degroff cls.3.520013.2624.083S/2017 (24495) 120172.7375 BIN JPL LoMP LCDB
26074 Carlwirtz cls.3.6219773.622.4593S/2013 (26074) 120136.116.1112 BIN JPL LoMP LCDB
26471 Tracybecker cls.6.050.3620005.692.687S/2009 (26471) 120092.051839.288 BIN JPL LoMP LCDB
(32039) 2000 JO23 cls.4.150.32+20003.966.5979S/2007 (32039) 120071.2753360 BIN JPL LoMP LCDB
(34706) 2001 OP83 cls.3.620.2820013.482.5644S/2005 (34706) 120050.98720.76 BIN JPL LoMP LCDB
(51356) 2000 RY76 cls.3.30.21+20003.232.5572S/2012 (51356) 120120.681362.04 BIN JPL LoMP LCDB
(53432) 1999 UT55 cls.2.620.23+19992.553.330S/2013 (53432) 120130.59414.1 BIN JPL LoMP LCDB
(54697) 2001 FA70 cls.3.30.19+20013.22.7077S/2016 (54697) 120160.616.2648 BIN JPL LoMP LCDB
(99913) 1997 CZ5 cls.6.890.1919976.772.83507S/2010 (99913)20101.291114.6808 BIN JPL LoMP LCDB
(100015) 1989 SR7 cls.2.40.3519892.32.4172S/2018 (100015) 120180.84.520.65 BIN JPL LoMP LCDB
(114319) 2002 XD58 cls.2.6220022.192.9649S/2005 (114319) 120057.954 BIN JPL LoMP LCDB
(218144) 2002 RL66 cls.2.972002587S/2010 (218144) 12010 BIN JPL LoMP LCDB

Main-belt asteroids

This is a list of main-belt asteroids with companions. [1] Candidate binaries with an unconfirmed status are displayed on a dark background. [22] For an overview, see summary and introduction.

SystemPrimarySecondaryRefs
Designation Class D e
(km)
s/p-ratioYOD D p
(km)
RT p
(hours)
DesignationYOD D s
(km)
a s
(km)
P s
(hours)
22 Kalliope 168.50.1681852166.24.1482 Linus
S/2001 (22) 1
200128109586.304 BIN JPL
LoMP LCDB
31 Euphrosyne EUP 267.080.0251854267.085.53S/2019 (31) 120196.767728.8 BIN JPL
LoMP LCDB
41 Daphne 1740.01118561745.9880Peneius
S/2008 (41) 1
20082-44326.4 BIN JPL
LoMP LCDB
45 Eugenia 2060.034
0.024
18572065.699 Petit-Prince
S/1998 (45) 1
(Eugenia I)
199871164113.18 BIN JPL
LoMP LCDB
S/2004 (45) 1
(Eugenia II)
2004561143.03
87 Sylvia SYL 2860.038
0.037
18662865.1836 Romulus
S/2001 (87)
(Sylvia I)
200110.8135187.696 BIN JPL
LoMP LCDB
Remus
S/2004 (87)
(Sylvia II)
200410.6701.632.952
90 Antiope THM 1210.954186687.816.505S/2000 (90) 1200087.817116.505 BIN JPL
LoMP LCDB
93 Minerva GEF 141.60.028
0.021
1867141.65.9818Aegis
S/2009 (93) 1
(Minerva I)
20093.6623.557.744 BIN JPL
LoMP LCDB
Gorgoneion
S/2009 (93) 2
(Minerva II)
20093.237526.7528
107 Camilla SYL 219.370.073
0.016
1868219.374.8439S/2001 (107) 1200116125089.328 BIN JPL
LoMP LCDB
S/2016 (107) 120163.534012
113 Amalthea FLO 50.1187150.19.95S/2017 (113) 120175 BIN JPL
LoMP LCDB
121 Hermione 7:4 1900.17118721875.551S/2002 (121) 120023274761.512 BIN JPL
LoMP LCDB
130 Elektra 1990.03
0.01
0.008
18731995.2247S/2003 (130) 120036.01298126.9 BIN JPL
LoMP LCDB
S/2014 (130) 120142.049830.14
S/2014 (130) 220141.634516.8
216 Kleopatra 1350.066
0.051
18801355.38528Alexhelios
S/2008 (216) 1
(Kleopatra I)
20088.967855.68 BIN JPL
LoMP LCDB
Cleoselene
S/2008 (216) 2
(Kleopatra II)
20086.945429.76
243 Ida KOR 31.40.045188431.44.6336 Dactyl (Ida I)19931.410836.96 BIN JPL
LoMP LCDB
283 Emma EMA 134.70.0671889134.76.888S/2003 (283) 12003958180.472 BIN JPL
LoMP LCDB
317 Roxane 20.560.267189119.868.169Olympias
S/2009 (317) 1
(Roxane I)
20095.3257336 BIN JPL
LoMP LCDB
379 Huenna THM 87.470.066189487.477.022S/2003 (379) 120035.833362102 BIN JPL
LoMP LCDB
702 Alauda ALA 201.960.0171910201.968.354Pichi üñëm
S/2007 (702) 1
20073.511227117.9 BIN JPL
LoMP LCDB
762 Pulcova 1430.1341913141.725.839S/2000 (762) 1200019703106.51 BIN JPL
LoMP LCDB
809 Lundia FLO 9.10.8919156.915.418S/2005 (809) 120056.115.815.418 BIN JPL
LoMP LCDB
854 Frostia 7.840.72419166.3537.728S/2004 (854) 120044.61737.73 BIN JPL
LoMP LCDB
939 Isberga 12.90.29192012.42.9170S/2006 (939) 120063.63326.630 BIN JPL
LoMP LCDB
1016 Anitra FLO 9.5419249.545.9295S/2016 (1016) 12016 BIN JPL
LoMP LCDB
1052 Belgica FLO 10.410.36+19259.792.7097S/2012 (1052) 120123.533447.26 BIN JPL
LoMP LCDB
1089 Tama 12.920.685192710.716.444S/2003 (1089) 120037.3320.716.445 BIN JPL
LoMP LCDB
1313 Berna 13.50.79193310.625.464S/2004 (1313) 120048.372525.464 BIN JPL
LoMP LCDB
1333 Cevenola EUN 17.150.35193417.154.88S/2008 (1333) 12008 BIN JPL
LoMP LCDB
1338 Duponta FLO 7.880.2319347.683.8545S/2007 (1338) 120071.771417.57 BIN JPL
LoMP LCDB
1344 Caubeta 5.8419355.843.122S/2011 (1344) 12011 BIN JPL
LoMP LCDB
1453 Fennia H 7.230.28+19386.964.4121S/2007 (1453) 120071.951522.9896 BIN JPL
LoMP LCDB
1509 Esclangona H 8.170.33119387.763.253S/2003 (1509) 120032.57140552 BIN JPL
LoMP LCDB
1526 Mikkeli 5.320.219395.222.9341S/2020 (1526) 120201.048.815.9792 BIN JPL LoMP LCDB
1626 Sadeya 15.140.26192714.653.4202S/2020 (1626) 120203.815451.312 BIN JPL LoMP LCDB
1717 Arlon 9.1319549.135.148S/2005 (1717) 120051718.235 BIN JPL
LoMP LCDB
1770 Schlesinger 10.61196710.612.8804S/2016 (1770) 12016 BIN JPL
LoMP LCDB
1798 Watts FLO 6.6319496.63S/2017 (1798) 12017 BIN JPL
LoMP LCDB
1803 Zwicky PHO 9.930.2619679.612.7329S/2021 (1803) 120212.502428.459 BIN JPL LoMP LCDB
1830 Pogson FLO 8.280.32+19687.892.57S/2007 (1830) 120072.521824.24 BIN JPL
LoMP LCDB
2006 Polonskaya FLO 4.620.22+19734.513.118S/2005 (2006) 120050.998.519.1496 BIN JPL
LoMP LCDB
2019 van Albada FLO 7.860.26+19357.612.7294S/2019 (2019) 120191.98+1417.982 BIN JPL LoMP LCDB
2047 Smetana H 3.070.21+197132.497S/2012 (2047) 120120.636.322.4304 BIN JPL
LoMP LCDB
2070 Humason 4.570.3119644.373.1883S/2018 (2070) 120181.351753.50 BIN JPL
LoMP LCDB
2121 Sevastopol FLO 9.320.4119718.622.9064S/2010 (2121) 120103.542637.104 BIN JPL
LoMP LCDB
2131 Mayall H 8.560.26+19758.282.568S/2009 (2131) 120092.151823.4792 BIN JPL
LoMP LCDB
2178 Kazakhstania 4.310.2619724.173.0183S/2018 (2178) 120181.08818.50 BIN JPL
LoMP LCDB
2242 Balaton 6.130.25+19365.952.7979S/2015 (2242) 120151.49+912.96 BIN JPL
LoMP LCDB
2337 Boubín 8.010.16+19767.912.53163S/2018 (2337) 120181.27+1316.09 BIN JPL
LoMP LCDB
2343 Siding Spring NYS 5.20.19+19795.112.10637S/2015 (2343) 120150.97+711.78904 BIN JPL
LoMP LCDB
2478 Tokai FLO 9.980.72+19818.125.885S/2007 (2478) 120075.832125.896 BIN JPL
LoMP LCDB
2486 Metsähovi 8.4219398.424.4518S/2007 (2486) 12007 BIN JPL
LoMP LCDB
2491 Tvashtri H 3.2590.24+19773.174.0852S/2018 (2491) 120180.76+7.526.71 BIN JPL
LoMP LCDB
2516 Roman 4.4080.2319644.32.6266S/2019 (2516) 120190.997.316.2192 BIN JPL LoMP LCDB
2535 Hämeenlinna 9.420.22+19399.23.23106S/2015 (2535) 120152.0+1921.2304 BIN JPL
LoMP LCDB
2602 Moore 9.60.2819829.23.46723S/2019 (2602) 120192.62227.455 BIN JPL LoMP LCDB
2623 Zech 7.920.29+19197.612.7401S/2014 (2623) 120142.21+48117.19 BIN JPL
LoMP LCDB
2691 Sersic 5.440.43+197453.8811S/2011 (2691) 120112.151226.808 BIN JPL
LoMP LCDB
2754 Efimov 6.580.219666.462.4497S/2006 (2754) 120061.291014.7648 BIN JPL
LoMP LCDB
2815 Soma FLO 7.160.2519826.952.73325S/2011 (2815) 120111.741317.916 BIN JPL
LoMP LCDB
2825 Crosby 5.060.18+19384.982.8135S/2017 (2825) 120170.9+14.3496 BIN JPL
LoMP LCDB
2873 Binzel FLO 6.430.25+19826.242.7037S/2019 (2873) 120191.56+n.a.44.58 BIN JPL
LoMP LCDB
2881 Meiden 5.6719835.673.48S/2017 (2881) 12017 BIN JPL
LoMP LCDB
3034 Climenhaga 9.9719179.972.73749S/2009 (3034) 120091918.9552 BIN JPL
LoMP LCDB
3073 Kursk FLO 6.890.2519796.693.4468S/2006 (3073) 120061.672244.952 BIN JPL
LoMP LCDB
3169 Ostro H 5.150.8719813.896.509S/2005 (3169) 120053.385.26.5088 BIN JPL
LoMP LCDB
3309 Brorfelde H 5.040.2619824.882.5041S/2005 (3309) 120051.27918.48 BIN JPL
LoMP LCDB
3378 Susanvictoria 6.640.24+19226.462.5621S/2017 (3378) 120171.55+1117.1312 BIN JPL
LoMP LCDB
3390 Demanet FLO 5.060.2619844.92.59457S/2021 (3390) 120211.271437.14 BIN JPL LoMP LCDB
3433 Fehrenbach 7.740.3119637.43.916S/2015 (3433) 120152.31419.6656 BIN JPL
LoMP LCDB
3523 Arina 9.070.24+19758.822.6742S/2021 (3523) 120212.12+2229.261 BIN JPL LoMP LCDB
3623 Chaplin KOR 11.1198111.18.361S/2008 (3623) 12008 BIN JPL
LoMP LCDB
3673 Levy 6.410.2819856.172.688S/2007 (3673) 120071.731321.6 BIN JPL
LoMP LCDB
3703 Volkonskaya V 3.730.419783.463.235S/2005 (3703) 120051.397.824 BIN JPL
LoMP LCDB
3749 Balam FLO 4.660.466
0.42
19823.952.80483S/2002 (3749) 120021.842891464 BIN JPL
LoMP LCDB
S/2008 (3749) 120081.662033.384
3782 Celle V 5.920.4319865.443.839S/2003 (3782) 120032.341836.576 BIN JPL
LoMP LCDB
3792 Preston PHO 5.1619855.162.9277S/2016 (3792) 1201646.8 BIN JPL
LoMP LCDB
3657 Ermolova V 6.660.1419786.62.60655S/2020 (3657) 120200.929.412.540 BIN JPL
LoMP LCDB
3841 Dicicco FLO 6.250.28+19836.023.5949S/2014 (3841) 120141.67+1221.6288 BIN JPL
LoMP LCDB
3865 Lindbloom V 7.970.65+19886.68-26.016S/2020 (3865) 120204.34+1726.016 BIN JPL LoMP LCDB
3868 Mendoza 9.350.2219609.132.7709S/2009 (3868) 120092.012024.384 BIN JPL
LoMP LCDB
3905 Doppler 7.910.77+19846.2750.8S/2013 (3905) 120134.832650.808 BIN JPL
LoMP LCDB
3912 Troja 5.930.3319885.633.6594S/2021 (3912) 120211.861017.371 BIN JPL
LoMP LCDB
3951 Zichichi 6.720.33+19866.383.3942S/2006 (3951) 120062.111627.6 BIN JPL
LoMP LCDB
3982 Kastel' 6.7919846.795.835S/2005 (3982) 12005 BIN JPL
LoMP LCDB
4029 Bridges 8.020.2419827.83.5746S/2006 (4029) 120061.871316.3104 BIN JPL
LoMP LCDB
4092 Tyr 7.60.45+19867.616.0875S/2020 (4092) 120201416.0875 BIN JPL
LoMP LCDB
4272 Entsuji 7.680.1819777.562.8087S/2015 (4272) 120151.361315.9456 BIN JPL
LoMP LCDB
4288 Tokyotech EUN 12.30.30+198911.783.18S/2019 (4288) 120193.53+3030.276 BIN JPL LoMP LCDB
4296 van Woerkom FLO 7.60.319357.32.809S/2016 (4296) 120162.21726.232 BIN JPL
LoMP LCDB
4337 Arecibo THM 19.690.53198524.3S/2021 (4337) 12021134819.2 BIN JPL
LoMP LCDB
4362 Carlisle FLO 5.590.33+19785.31-2.63289S/2021 (4362) 120211.75+1743.296 BIN JPL
LoMP LCDB
4383 Suruga 6.470.21+19896.333.4068S/2013 (4383) 120131.331116.3872 BIN JPL
LoMP LCDB
4440 Tchantchès H 2.090.25+19842.032.78836S/2005 (4440) 120050.513.818.6912 BIN JPL
LoMP LCDB
4492 Debussy 17.360.643198814.626.606S/2004 (4492) 120049.393126.616 BIN JPL
LoMP LCDB
4514 Vilen 6.290.2619726.092.8922S/2015 (4514) 120151.58+1116.8504 BIN JPL
LoMP LCDB
4541 Mizuno 6.2919896.295.261S/2015 (4541) 12015 BIN JPL
LoMP LCDB
4607 Seilandfarm 7.390.29+19877.13.9683S/2009 (4607) 120092.061931.632 BIN JPL
LoMP LCDB
4666 Dietz 6.830.34
19866.522.95242S/2015 (4666) 120152.22+1833.192 BIN JPL
LoMP LCDB
S/2015 (4666) 22015
4674 Pauling H 4.680.3219894.462.521S/2004 (4674) 120041.412503120 BIN JPL
LoMP LCDB
4765 Wasserburg H 1.780.16+19861.763.6231S/2013 (4675) 120130.282.915.9696 BIN JPL
LoMP LCDB
4786 Tatianina 3.280.19+19853.222.9227S/2006 (4786) 120060.616.621.6696 BIN JPL
LoMP LCDB
4788 Simpson 3.580.17+19863.532.81752S/2020 (4788) 120200.6+5.714.981 BIN JPL LoMP LCDB
4868 Knushevia H 1.5350.13+19891.523.1422S/2015 (4868) 120150.2+2.111.922 BIN JPL
LoMP LCDB
4951 Iwamoto 5.520.76+19904.39118.0S/2007 (4951) 120073.3431118.0 BIN JPL
LoMP LCDB
5112 Kusaji FLO 3.420.3119873.272.7995S/2016 (5112) 120161.01720.74 BIN JPL
LoMP LCDB
5135 Nibutani 4.820.2819904.642.818S/2020 (5135) 120201.39.621.7368 BIN JPL LoMP LCDB
5402 Kejosmith 4.190.18+19894.122.69549S/2018 (5402) 120181236.62 BIN JPL
LoMP LCDB
5425 Vojtěch V 7.050.2219846.892.64759S/2015 (5425) 120151.521625.4304 BIN JPL
LoMP LCDB
5426 Sharp H 2.03319852.0334.5609S/2014 (5426) 120144.524.2208 BIN JPL
LoMP LCDB
5474 Gingasen V 5.0519885.053.6242S/2008 (5474) 12008 BIN JPL
LoMP LCDB
5477 Holmes H 3.150.3719892.952.9943S/2005 (5477) 120051.096.724.43 BIN JPL
LoMP LCDB
5481 Kiuchi V 7.920.3319907.523.6196S/2008 (5481) 120082.481520.90 BIN JPL
LoMP LCDB
5500 Twilley FLO 4.480.27+19814.332.9554S/2017 (5500) 120171.17+7.817.556 BIN JPL LoMP LCDB
5536 Honeycutt 9.10.3119558.73.583S/2016 (5536) 120162.71516.325 BIN JPL
LoMP LCDB
5674 Wolff 6.040.8+19864.7293.7S/2015 (5674) 120153.78+3093.696 BIN JPL
LoMP LCDB
5772 Johnlambert 80.22+19887.813.0782S/2021 (5772) 120211.72+1417.98 BIN JPL
LoMP LCDB
5872 Sugano 6.330.3+19896.063.3642S/2016 (5872) 120161.82+1118.84 BIN JPL
LoMP LCDB
5899 Jedicke H 2.670.32+19862.542.748S/2010 (5899) 120100.814.416.699 BIN JPL
LoMP LCDB
5905 Johnson H 4.790.4019894.453.7824S/2005 (5905) 120051.789.321.785 BIN JPL
LoMP LCDB
6009 Yuzuruyoshii 10.320.29+19909.913.03067S/2021 (6009) 120212.87+3344.07 BIN JPL
LoMP LCDB
6016 Carnelli 3.530.219913.462.8028S/2016 (6016) 120160.69721.331 BIN JPL
LoMP LCDB
6084 Bascom 6.350.3719855.962.745S/2006 (6084) 120062.22043.512 BIN JPL
LoMP LCDB
6100 Kunitomoikkansai 4.060.38+19913.84.3018S/2016 (6100) 120161.44+718.46 BIN JPL
LoMP LCDB
6181 Bobweber 4.4919864.492.75796S/2008 (6181) 12008 BIN JPL
LoMP LCDB
6186 Zenon 60.2819885.82.6832S/2017 (6186) 120171.69.114.393 BIN JPL
LoMP LCDB
6244 Okamoto 6.890.2519906.692.8958S/2006 (6244) 120061.671320.3208 BIN JPL
LoMP LCDB
6245 Ikufumi 8.10.2319907.892.9222S/2018 (6245) 120181.891315.44 BIN JPL
LoMP LCDB
(6265) 1985 TW3 4.950.2419854.812.709S/2007 (6265) 120071.16815.8592 BIN JPL
LoMP LCDB
(6369) 1983 UC FLO 5.170.3519834.92.9S/2013 (6369) 120131.715–39.8 BIN JPL
LoMP LCDB
6384 Kervin H 3.740.3+19893.63.6194S/2015 (6384) 120151.1+6.115.94 BIN JPL
LoMP LCDB
6615 Plutarchos 3.140.2519603.052.3247S/2007 (6615) 120070.769.740.03 BIN JPL
LoMP LCDB
6708 Bobbievaile 9.230.57+19898.028.221S/2009 (6708) 120094.571924.696 BIN JPL
LoMP LCDB
7187 Isobe H 6.050.1719925.964.2427S/2012 (7187) 120121.011633.1 BIN JPL
LoMP LCDB
7225 Huntress 6.680.2119836.542.4400S/2007 (7225) 120071.371014.6712 BIN JPL
LoMP LCDB
7307 Takei 10.10.24+19949.82.74685S/2021 (7307) 120212.61920.0064 BIN JPL LoMP LCDB
7344 Summerfield 6.2519926.25S/2017 (7344) 12017 BIN JPL
LoMP LCDB
7393 Luginbuhl FLO 5.470.4+19845.082.68763S/2019 (7393) 120172.03+1639.4224 BIN JPL
LoMP LCDB
(7792) 1995 WZ3 7.4519957.453.16001S/2021 (7792)2021 BIN JPL
LoMP LCDB
7958 Leakey H 2.940.3019942.822.34843S/2012 (7958) 120120.851050.28 BIN JPL
LoMP LCDB
8026 Johnmckay H 1.6919911.69372S/2010 (8026) 12010 BIN JPL
LoMP LCDB
8077 Hoyle 12s/p1986122.7454S/2000 (8077) 12000 BIN JPL
LoMP LCDB
8116 Jeanperrin FLO 4.770.33+19964.533.6169S/2007 (8116) 120071.491336.144 BIN JPL
LoMP LCDB
8306 Shoko FLO 3.460.40+19953.213.350S/2013 (8306) 120131.289.436.192 BIN JPL
LoMP LCDB
8474 Rettig FLO 60.86+19854.530.54S/2015 (8474) 120153.9+1430.54 BIN JPL
LoMP LCDB
9069 Hovland H 3.130.30+199334.2175S/2004 (9069) 120040.97.830.336 BIN JPL
LoMP LCDB
9260 Edwardolson 4.120.2719533.983.0852S/2005 (9260) 120051.077.217.784 BIN JPL
LoMP LCDB
(9332) 1990 SB1 EUN 6.180.2619905.982.98701S/2019 (9332) 120191.552148.84 BIN JPL LoMP LCDB
9617 Grahamchapman FLO 2.840.2719932.742.2856S/2006 (9617) 120060.745.219.3848 BIN JPL
LoMP LCDB
9783 Tensho-kan 5.330.3519945.12.9S/2013 (9783) 120131.813–29.568 BIN JPL
LoMP LCDB
9972 Minoruoda 9.11993S/2017 (9972) 12017 BIN JPL
LoMP LCDB
10123 Fideöja 3.480.3519933.32.87S/2013 (10123) 120131.213–56.448 BIN JPL
LoMP LCDB
10132 Lummelunda 3.5890.28+19933.462.5099S/2017 (10132) 120170.97+7.322.44 BIN JPL
LoMP LCDB
10208 Germanicus FLO 3.550.4619973.233.34825S/2007 (10208) 120071.481358.56 BIN JPL
LoMP LCDB
(11217) 1999 JC4 H 3.319993.34.8219S/2013 (11217) 120136.219.1712 BIN JPL
LoMP LCDB
11227 Ksenborisova 2.619992.62.61679S/2017 (11227) 12017 BIN JPL
LoMP LCDB
11264 Claudiomaccone 4.20.31+19794-3.1872S/2005 (11264) 120051.24+615.1104 BIN JPL
LoMP LCDB
12326 Shirasaki FLO 3.80.2419923.72.7286S/2016 (12326) 120160.98.425.056 BIN JPL
LoMP LCDB
13123 Tyson PHO 10.87199410.873.3303S/2015 (13123) 12015 BIN JPL
LoMP LCDB
15107 Toepperwein FLO 2.860.19+20002.812.5327S/2021 (15107) 120210.53+5.419.6032 BIN JPL LoMP LCDB
15268 Wendelinefroger NYS 3.970.27+19903.832.4224S/2008 (15268) 120081.038.725.08 BIN JPL
LoMP LCDB
(15430) 1998 UR31 3.7419983.742.5273S/2010 (15430) 120108.223.9592 BIN JPL
LoMP LCDB
15822 Genefahnestock H 1.720.19+19941.692.96S/2010 (15822) 120100.323.320.1312 BIN JPL
LoMP LCDB
16525 Shumarinaiko NYS 5.250.16+19915.182.5932S/2013 (16525) 120130.838.114.4096 BIN JPL
LoMP LCDB
(16694) 1995 AJ FLO 4.060.23+19953.963.6421S/2020 (16694) 120200.91+925.2792 BIN JPL LoMP LCDB
17081 Jaytee 4.520.26+19994.372.8818S/2021 (17081) 120211.137+7.516.34 BIN JPL
LoMP LCDB
17246 Christophedumas KOR 4.610.22220004.55+S/2004 (17246) 1200412282160 BIN JPL
LoMP LCDB
17260 Kušnirák 4.770.2620004.623.1287S/2006 (17260) 120061.27.414.7576 BIN JPL
LoMP LCDB
17700 Oleksiygolubov 3.450.31+19973.293.8382S/2018 (17700) 120181.02+5.415.49 BIN JPL
LoMP LCDB
(18303) 1980 PU 4.380.2419804.32.72627S/2019 (18303) 1201916.112.27 BIN JPL LoMP LCDB
(18503) 1996 PY4 PHO 3.5290.24+19963.433.4391S/2021 (18503) 120210.82+6.719.904 BIN JPL
LoMP LCDB
(18527) 1996 VJ30 V 3.350.3219963.193.3529S/2018 (18527) 120181.02619.07 BIN JPL
LoMP LCDB
(18890) 2000 EV26 H 40.27+20003.863.8216S/2014 (18890) 120141.04+614.2896 BIN JPL
LoMP LCDB
20325 Julianoey 4.940.319984.733.24474S/2014 (20325) 120141.421023.5 BIN JPL
LoMP LCDB
20882 Paulsánchez NYS 4.420004.42.5586S/2018 (20882) 120181232.810 BIN JPL
LoMP LCDB
21436 Chaoyichi 1.95s/p19981.82.87S/2014 (21436) 120140.60.35 BIN JPL
LoMP LCDB
21527 Horton EUN 4.990.21+19984.882.76762S/2019 (21527) 120191.02+8.717.44 BIN JPL LoMP LCDB
22899 Alconrad KOR 5.680.22219995.544.03S/2003 (22899) 120031.231821344 BIN JPL
LoMP LCDB
(24106) 1999 VA12 1999S/2020 (24106) 12020 BIN JPL
LoMP LCDB
(24465) 2000 SX155 H 3.180.22+20003.12.66087S/2016 (24465) 120160.683.69.252 BIN JPL
LoMP LCDB
25015 Lairdclose FLO 2.89919982.9S/2016 (25015) 12018 BIN JPL
LoMP LCDB
25021 Nischaykumar 2.10.28199822.5344S/2019 (25021) 120190.56n.a.23.496 BIN JPL
LoMP LCDB
(26416) 1999 XM84 4.5619994.562.907S/2015 (26416) 12015 BIN JPL
LoMP LCDB
(26420) 1999 XL103 2.020.34+19991.913.2S/2019 (26420) 120190.65+n.a.23.899 BIN JPL
LoMP LCDB
(27568) 2000 PT6 H 1.82s/p20001.823.4885S/2013 (26578) 120133.116.356 BIN JPL
LoMP LCDB
27675 Paulmaley PHO 5.0919815.09S/2017 (27675) 12017 BIN JPL
LoMP LCDB
31450 Stevepreston 10.620.22199910.43.4116S/2015 (31450) 120152.33953.47 BIN JPL
LoMP LCDB
32008 Adriángalád 4.560.4+20004.233.0171S/2007 (32008) 120071.691340.25 BIN JPL
LoMP LCDB
(38079) 1999 HF PHO 3.419993.416.675S/2020 (38079) 12020 BIN JPL
LoMP LCDB
(43008) 1999 UD31 2.50.3519992.42.9S/2014 (43008) 120140.8 BIN JPL
LoMP LCDB
(44620) 1999 RS43 2.620.3519990.662.9S/2014 (44620) 120140.22 BIN JPL
LoMP LCDB
46829 McMahon 3.30.419983.062.6236S/2015 (46829) 120151.225.416.833 BIN JPL
LoMP LCDB
52316 Daveslater H 3.30.16+19923.262.7629S/2012 (52316) 120120.524.913.44 BIN JPL
LoMP LCDB
(69406) 1995 SX48 H 3.180.19+19953.124.486S/2013 (69406) 120130.595.316.11 BIN JPL
LoMP LCDB
(72036) 2000 XM44 PHO 2.70.25+20002.622.582S/2019 (72036) 120190.66+4.918.77 BIN JPL
LoMP LCDB
76818 Brianenke H 3.840.3720003.63.166S/2005 (76818) 120051.335.614.12 BIN JPL
LoMP LCDB
79472 Chiorny H 3.790.3219983.792.8802S/2012 (79472) 12012925.94 BIN JPL
LoMP LCDB
(80218) 1999 VO123 1.580.319990.282.9S/2012 (80218) 120120.080.933.1 BIN JPL
LoMP LCDB
(300163) 2006 VW139 2.6120061.8S/2011 (300163) 120111.81043360 BIN JPL
LoMP LCDB

The following binaries are double asteroids, with similarly sized components, and a barycenter outside of the larger object.

  1. 90 Antiope — S/2000 (90) 1
  2. 854 Frostia — S/2004 (854) 1
  3. 1313 Berna — S/2004 (1313) 1
  4. 2478 Tokai — S/2007 (2478) 1
  5. 3169 Ostro — S/2005 (3169) 1
  6. 3749 Balam — S/2002 (3749) 1
  7. 3905 Doppler — S/2013 (3905) 1
  8. 4674 Pauling — S/2004 (4674) 1
  9. 4951 Iwamoto — S/2007 (4951) 1
  10. 5674 Wolff — S/2015 (5674) 1
  11. 8474 Rettig — S/2015 (8474) 1
  12. 17246 Christophedumas — S/2004 (17246) 1
  13. (300163) 2006 VW139 — S/2011 (300163) 1

In addition, these bodies might be double asteroids, but due to errors in their size and orbit, it is uncertain.

  1. 809 Lundia — S/2005 (809) 1
  2. 1089 Tama — S/2003 (1089) 1
  3. 1509 Esclangona — S/2003 (1509) 1
  4. 4492 Debussy — S/2004 (4492) 1
  5. 11264 Claudiomaccone — S/2003 (11264) 1
  6. 22899 Alconrad — S/2003 (22899) 1

Jupiter trojans

This is a list of Jupiter trojans with companions. [1] Candidate binaries with an unconfirmed status are displayed on a dark background. [22] For an overview, see summary and introduction.

SystemPrimarySecondaryRefs
Designation Class D e
(km)
s/p-ratioYOD D p
(km)
RT p
(hours)
DesignationYOD D s
(km)
a s
(km)
P s
(hours)
617 Patroclus L5 1450.9241906106102.79Menoetius(Patroclus I)200198680102.792 BIN JPL LoMP LCDB
624 Hektor L4 2500.04819071846.921Skamandrios(Hektor I)200612957.571.162 BIN JPL LoMP LCDB
3548 Eurybates L4 63.90.013197363.98.711Queta(Eurybates I)20180.823101982.4 BIN JPL LoMP LCDB
16974 Iphthime L4 57.30.767199845.578.9S/2013 (16974) 1201334.917978.96 BIN JPL LoMP LCDB
(17365) 1978 VF11 L5 42.60.843197832.612.672S/2005 (17365) 1200527.54312.672 BIN JPL LoMP LCDB
29314 Eurydamas L5 400.73719943215.035S/2005 (29314) 12005244115.036 BIN JPL LoMP LCDB

Trans-Neptunian objects

This is a list of trans-Neptunian objects with companions. [1] Candidate binaries with an unconfirmed status are displayed on a dark background. [22] This list gives the companion's orbital period (Ps) in days rather than hours. For an overview, see summary and introduction.

SystemPrimarySecondaryRefs
Designation Class D e
(km)
s/p-ratioYOD D p
(km)
RT p
(hours)
DesignationYOD D s
(km)
a s
(km)
P s
(days)
(26308) 1998 SM165 1:2 2800.30219982688.4S/2001 (26308) 120018111377130.158 BIN JPL LoMP LCDB
38628 Huya PLU 4580.52520004065.28S/2012 (38628) 1201221317403.2 BIN JPL LoMP LCDB
42355 Typhon SDO 1850.5520021629.67 Echidna (Typhon I)200689158018.982 BIN JPL LoMP LCDB
47171 Lempo PLU3930.486
0.927
199927245.763Paha (Lempo I)2001132741150.3 BIN JPL LoMP LCDB
Hiisi (Lempo II)20072518671.907
(48639) 1995 TL8 SDO1940.4571995176S/2002 (48639) 12002804201.4 BIN JPL LoMP LCDB
50000 Quaoar CUB 10740.076200210708.839 Weywot (Quaoar I)2006811380012.26 BIN JPL LoMP LCDB
(55637) 2002 UX25 CUB6970.316200266514.382S/2007 (55637) 1200721047708.309 BIN JPL LoMP LCDB
58534 Logos CUB1060.766199782 Zoe (Logos I)2001678217309.87 BIN JPL LoMP LCDB
(60458) 2000 CM114 SDO2110.7692000167S/2006 (60458) 12006128220015 BIN JPL LoMP LCDB
(60621) 2000 FE8 2:5 1830.7592000146S/2007 (60621) 1200711111807.5 BIN JPL LoMP LCDB
65489 Ceto SDO2810.76420032234.43 Phorcys (Ceto I)200617118409.554 BIN JPL LoMP LCDB
66652 Borasisi CUB1630.81719991266.4 Pabu (Borasisi I)2003103452846.2888 BIN JPL LoMP LCDB
79360 Sila–Nunam CUB3430.9441997249300.2388 Nunam 2002236277712.51 BIN JPL LoMP LCDB
(80806) 2000 CM105 CUB2010.7592000160S/2005 (80806) 12002121270023 BIN JPL LoMP LCDB
(82075) 2000 YW134 3:8 2290.3472000216S/2005 (82075) 1200275190010 BIN JPL LoMP LCDB
(82157) 2001 FM185 CUB1830.8672001138S/2008 (82157) 12008120313033 BIN JPL LoMP LCDB
88611 Teharonhiawako CUB2200.72420011789.505 Sawiskera (Teharonhiawako I)200112927670828.76 BIN JPL LoMP LCDB
90482 Orcus PLU 9580.31200491713.18841 Vanth (Orcus I)200544290069.539 BIN JPL LoMP LCDB
(119067) 2001 KP76 CUB2110.9552001153S/2007 (119067) 120071468900130 BIN JPL LoMP LCDB
(119979) 2002 WC19 1:2 4610.3162002440S/2007 (119979) 1200613940908.403 BIN JPL LoMP LCDB
120347 Salacia CUB9010.34420048546.5 Actaea (Salacia I)200628656195.4938 BIN JPL LoMP LCDB
(123509) 2000 WK183 CUB1460.9512000106S/2007 (123509) 12005101236630.917 BIN JPL LoMP LCDB
134340 Pluto PLU 23760.511
0.018
0.016
0.012
0.0025
19302380153.2935 Charon (Pluto I)19781212195736.3872 BIN JPL LoMP LCDB
Nix (Pluto II)2005384869424.8546
Hydra (Pluto III)2005396473838.2018
Kerberos (Pluto IV)2011135778332.1676
Styx (Pluto V)2012114265620.1616
(134860) 2000 OJ67 CUB1750.7832000138S/2003 (134860) 12003108227022.0584 BIN JPL LoMP LCDB
136108 Haumea HAU 14250.232
0.116
200313793.9154 Hiʻiaka (Haumea I)20053204988049.462 BIN JPL LoMP LCDB
Namaka (Haumea II)20051702565718.2783
136199 Eris SDO23260.30120032326378.6 Dysnomia (Eris I)20057003746015.7859 BIN JPL LoMP LCDB
136472 Makemake CUB14400.122200514307.771 S/2015 (136472) 1 201513021100+12.4 BIN JPL LoMP LCDB
(139775) 2001 QG298 PLU 1790.867200113513.7744S/2004 (139775) 120031171720.5739 BIN JPL LoMP LCDB
148780 Altjira CUB3310.8992001246S/2007 (148780) 120062219904139.56 BIN JPL LoMP LCDB
(160091) 2000 OL67 CUB740.7592000153S/2007 (160091) 12007567695347.085 BIN JPL LoMP LCDB
(160256) 2002 PD149 CUB2420.8322002186S/2007 (160256) 1200715524400470 BIN JPL LoMP LCDB
174567 Varda CUB7920.51320037055.91 Ilmarë (Varda I)200936148005.7508 BIN JPL LoMP LCDB
(182933) 2002 GZ31 SDO2310.6312002195S/2006 (182933) 12006123206012 BIN JPL LoMP LCDB
(208996) 2003 AZ84 PLU7270.1200372313.44S/2005 (208996) 1200572720012 BIN JPL LoMP LCDB
225088 Gonggong 3:10 12300.22007153544.81 Xiangliu (Gonggong I)201095150006 BIN JPL LoMP LCDB
229762 Gǃkúnǁʼhòmdímà SDO5990.175200759011.05Gǃòʼé ǃHú (Gǃkúnǁʼhòmdímà I)20087136005.9 BIN JPL LoMP LCDB
(275809) 2001 QY297 CUB2290.912200116911.68S/2006 (275809) 120061549960138.11 BIN JPL LoMP LCDB
(303712) 2005 PR21 CUB2650.6032005227S/2007 (303712) 12007137360022 BIN JPL LoMP LCDB
341520 Mors–Somnus PLU 1410.95520071029.28 Somnus 20079721040971.7 BIN JPL LoMP LCDB
(364171) 2006 JZ81 CUB1450.6372006122S/2006 (364171) 1200678330001500 BIN JPL LoMP LCDB
385446 Manwë 4:7 1850.582003160 Thorondor (Manwë I)2006926674110.176 BIN JPL LoMP LCDB
(469420) 2001 XP254 3:5 1330.7112001108S/2008 (2001 XP254) 1200877120012 BIN JPL LoMP LCDB
(469505) 2003 FE128 1:2 2210.73520031785.85S/2010 (2003 FE128) 12010131214014 BIN JPL LoMP LCDB
(469509) 2003 HC57 CUB3060.952003222S/2020 (469509) 120202111960- BIN JPL LoMP LCDB
(469514) 2003 QA91 CUB 2600.9552003188S/2006 (2003 QA91) 1200618019009.1 BIN JPL LoMP LCDB
(469610) 2004 HF79 CUB2420.812004188S/2019 (469610) 12019153382029 BIN JPL LoMP LCDB
469705 ǂKá̦gára CUB1740.76220051389.65ǃHãunu (ǂKá̦gára I)20091057700128.11 BIN JPL LoMP LCDB
(505447) 2013 SQ99 CUB2310.812013180S/2017 (505447) 1201714613300200 BIN JPL LoMP LCDB
(505476) 2013 UL15 CUB2120.792013166S/2019 (505476) 12019131537059 BIN JPL LoMP LCDB
(506121) 2016 BP81 CUB2530.9020161886.85S/2017 (506121) 1201716911300140 BIN JPL LoMP LCDB
(508788) 2000 CQ114 CUB1750.8712000132S/2003 (2000 CQ114) 120031156930220.7 BIN JPL LoMP LCDB
(508869) 2002 VT130 CUB3240.8172002251S/2008 (2002 VT130) 1200820524909.8 BIN JPL LoMP LCDB
(511551) 2014 UD225 CUB2010.352013190S/2017 (511551) 120176621400460 BIN JPL LoMP LCDB
(523624) 2008 CT190 SDO3500.832008270S/2012 (2008 CT190) 1201222013003.3 BIN JPL LoMP LCDB
(523764) 2014 WC510 PLU 2270.762011181S/2018 (523764) 120181383490.87 BIN JPL LoMP LCDB
(523983) 1999 RY214 CUB1460.6051999125S/2008 (1999 RY214) 1200876150015 BIN JPL LoMP LCDB
(524217) 2001 RZ143 CUB1400.8322001108S/2001 (2001 RZ143) 1200190156017 BIN JPL LoMP LCDB
(524366) 2001 XR254 CUB2210.8262001171S/2005 (2001 XR254) 120061409310125.58 BIN JPL LoMP LCDB
(524531) 2002 XH91 CUB3500.6192002298S/2008 (2002 XH91) 1200818519900190 BIN JPL LoMP LCDB
(525462) 2005 EO304 CUB1710.5132005152.4S/2005 (2005 EO304) 1200578698003579 BIN JPL LoMP LCDB
(532037) 2013 FY27 SDO7650.252013740S/2018 (2013 FY27) 12018190980015 BIN JPL LoMP LCDB
1998 WV24 CUB1460.8711998110S/2007 (1998 WV24) 1200796142014 BIN JPL uTNO LCDB
1998 WW31 CUB1920.8331998148S/2000 (1998 WW31) 1200012322620587.3 BIN JPL uTNO LCDB
1999 OJ4 CUB1040.96199975S/2002 (1999 OJ4) 1200272326784.12 BIN JPL uTNO LCDB
1999 RT214 CUB1210.6891999100S/2006 (1999 RT214) 1200669331064 BIN JPL uTNO LCDB
1999 XY143 CUB2780.8391999213S/2008 (1999 XY143) 12008179267014 BIN JPL uTNO LCDB
2000 CF105 CUB810.78200063.6S/2002 (2000 CF105) 1200250333003989 BIN JPL uTNO LCDB
2000 QL251 1:2 2060.9672000148S/2006 (2000 QL251) 12006143500256.451 BIN JPL uTNO LCDB
2000 WT169 CUB2650.822000205S/2008 (2000 WT169) 12008168260014 BIN JPL uTNO LCDB
2001 FL185 CUB1670.6172001142S/2006 (2001 FL185) 1200688190017 BIN JPL uTNO LCDB
2001 QC298 CUB3030.81720012357.78S/2002 (2001 QC298) 12002192381319.23 BIN JPL uTNO LCDB
2001 QQ322 CUB2310.9122001171S/2007 (2001 QQ322) 12007156389032 BIN JPL uTNO LCDB
2001 QW322 CUB1800.9862001128S/2001 (2001 QW322) 120011261021006280 BIN