(42301) 2001 UR163

Last updated

(42301) 2001 UR163
42301-2001ur163 hst.jpg
Hubble Space Telescope image of 2001 UR163 taken in 2005
Discovery [1] [2]
Discovered by DES
Discovery site Kitt Peak National Obs.
Discovery date21 October 2001
Designations
(42301) 2001 UR163
2001 UR163
TNO [3]  · 4:9 res [4] [5]
distant [1]
Orbital characteristics [3]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 2 [1] [3]
Observation arc 38.45 yr (14,045 d)
Aphelion 66.643 AU
Perihelion 36.987 AU
51.815 AU
Eccentricity 0.2862
372.98 yr (136,232 d)
80.814°
0° 0m 9.36s / day
Inclination 0.7531°
301.39°
8 October 1937
344.50°
Physical characteristics
Mean diameter
352±85  km [4] [6] : 26 
0.209±0.08 [4] [6]
21.3 [9]
4.21 [1] [3]

    (42301) 2001 UR163 (provisional designation 2001 UR163) is a resonant trans-Neptunian object and possible dwarf planet located in the outermost region of the Solar System. The object measures approximately 352 kilometers (220 miles) in diameter with a high albedo and stays in an uncommon orbital resonance (4:9) with Neptune. It was discovered on 21 October 2001 by astronomers of the Deep Ecliptic Survey program at Kitt Peak National Observatory near Tucson, Arizona, United States. As of 2021, it has not been named. [1]

    Contents

    Classification and orbit

    2001 UR163 has been characterized as a dwarf planet candidate. [10] Based on assumptions and estimates, Michael Brown gives it a "likely"-status on his website, which is the third highest status after "near certainty" and "highly likely" (also see his classification table). [11]

    The object orbits the Sun at a distance of 37.0–66.6  AU once every 372 years and 12 months (136,232 days; semi-major axis of 51.82 AU). Its orbit has an eccentricity of 0.29 and an inclination of 1° with respect to the ecliptic. [3] It came to perihelion on 8 October 1937, and has since been moving away from the Sun. [3] In 2006, it moved beyond a distance of 50 AU and is at 53.7 AU as of 2021. [9] The body's observation arc begins with a precovery, published by the Digitized Sky Survey and taken at the Siding Spring Observatory in July 1982. [1]

    Numbering and naming

    2001 UR163 was numbered (42301) by the Minor Planet Center on 26 May 2002 ( M.P.C. 45686). [12] As of 2021, it has not been named. [1] Acoording to the established naming conventions, it will receive a mythological or mythic name (not necessarily from Classical mythology), in particular one associated with creation. [13]

    Physical characteristics

    Lightcurve analysis shows only small deviations, suggesting that 2001 UR163 is a spheroid with small albedo spots. [10] Observations with Spitzer 's Infrared Array Camera were used to study the body's surface composition. The analyzed data indicate the presence of 20% water ice, 60% amorphous silicates, and 20% organic compounds, including complex ones such as tholins. [6] : 20 

    Diameter and albedo

    2001 UR163 measures approximately 352 kilometers (220 miles) in diameter with a high albedo of 0.209. [4] [6] : 26 

    Based on previous estimates published on the Lightcurve Data Base and on Michael Brown's website, 2001 UR163 measures between 531 km (330 mi) and 583 kilometers (360 miles), using an assumed intermediate surface albedo of 0.09 to 0.10 with an absolute magnitude of 4.49 and 4.4, respectively. [7] [11]

    See also

    Related Research Articles

    5145 Pholus is an eccentric centaur in the outer Solar System, approximately 180 kilometers in diameter, that crosses the orbit of both Saturn and Neptune. It was discovered on 9 January 1992 by American astronomer David Rabinowitz (uncredited) of UA's Spacewatch survey at the Kitt Peak National Observatory in Arizona, United States. The very reddish object has an elongated shape and a rotation period of 9.98 hours. It was named after the centaur Pholus from Greek mythology.

    (65407) 2002 RP120, provisional designation 2002 RP120, is a trans-Neptunian object and damocloid from the outer Solar System. Its orbit is retrograde and comet-like, and has a high eccentricity. It was discovered on 4 September 2002 by astronomers with the LONEOS survey at Anderson Mesa Station, Arizona, in the United States. The unusual object measures approximately 14.6 kilometers (9.1 miles) in diameter and is likely elongated in shape. It is a slow rotator and potentially a tumbler as well. The object was probably ejected from the ecliptic by Neptune.

    <span class="nowrap">(48639) 1995 TL<sub>8</sub></span>

    (48639) 1995 TL8 is a binary trans-Neptunian object from the scattered disc in the outermost regions of the Solar System. It was discovered by Arianna Gleason in 1995 and measures approximately 176 kilometers in diameter. Its 80-kilometer minor-planet moon, provisionally designated S/2002 (48639) 1, was discovered on 9 November 2002.

    (119070) 2001 KP77 (provisional designation 2001 KP77) is a resonant trans-Neptunian object in the Kuiper belt, a circumstellar disc located in the outermost region of the Solar System. It was discovered on 23 May 2001, by American astronomer Marc Buie at the Cerro Tololo Observatory in Chile. The object is locked in a 4:7 orbital resonance with Neptune. It has a red surface color and measures approximately 176 kilometers (110 miles) in diameter. As of 2021, it has not been named.

    <span class="nowrap">(15875) 1996 TP<sub>66</sub></span>

    (15875) 1996 TP66 (provisional designation 1996 TP66) is a resonant trans-Neptunian object of the plutino population, located in the outermost region of the Solar System, approximately 154 kilometers (96 miles) in diameter. It was discovered on 11 October 1996, by astronomers Jane Luu, David C. Jewitt and Chad Trujillo at the Mauna Kea Observatories, Hawaii, in the United States. The very reddish RR-type with a highly eccentric orbit has been near its perihelion around the time of its discovery. This minor planet was numbered in 2000 and has since not been named. It is probably not a dwarf planet candidate.

    (118228) 1996 TQ66 (provisional designation 1996 TQ66) is a resonant trans-Neptunian object of the plutino population in the Kuiper belt, located in the outermost region of the Solar System. It was discovered on 8 October 1996, by American astronomers Jun Chen, David Jewitt, Chad Trujillo and Jane Luu, using the UH88 telescope at the Mauna Kea Observatories, Hawaii. The very red object measures approximately 185 kilometers (110 miles) in diameter. As of 2021, it has not been named.

    (35671) 1998 SN165 (provisional designation 1998 SN165) is a trans-Neptunian object from the Kuiper belt located in the outermost region of the Solar System. It was discovered on 23 September 1998, by American astronomer Arianna Gleason at the Kitt Peak National Observatory near Tucson, Arizona. The cold classical Kuiper belt object is a dwarf planet candidate, as it measures approximately 400 kilometers (250 miles) in diameter. It has a grey-blue color (BB) and a rotation period of 8.8 hours. As of 2021, it has not been named.

    <span class="nowrap">(40314) 1999 KR<sub>16</sub></span>

    (40314) 1999 KR16 is a trans-Neptunian object on an eccentric orbit in the outermost region of the Solar System, approximately 254 kilometers (158 miles) in diameter. It was discovered on 16 May 1999, by French astronomer Audrey Delsanti and Oliver Hainaut at ESO's La Silla Observatory in northern Chile. The very reddish object is a dwarf planet candidate and has a rotation period of 11.7 hours.

    <span class="nowrap">(44594) 1999 OX<sub>3</sub></span>

    (44594) 1999 OX3 is an eccentric trans-Neptunian object with a centaur-like orbit from the outer Solar System, approximately 150 kilometers in diameter. It was discovered on 21 July 1999, by astronomers John Kavelaars, Brett Gladman, Matthew Holman and Jean-Marc Petit at Mauna Kea Observatories, Hawaii, United States.

    (469306) 1999 CD158 (provisional designation 1999 CD158) is a trans-Neptunian object from the circumstellar disc of the Kuiper belt, located in the outermost region of the Solar System. The relatively bright hot classical Kuiper belt object measures approximately 310 kilometers (190 miles) in diameter. It was discovered on 10 February 1999, by American astronomers Jane Luu, David Jewitt and Chad Trujillo at Mauna Kea Observatories on the Big Island of Hawaii, United States.

    (589683) 2010 RF43 (provisional designation 2010 RF43) is a large trans-Neptunian object orbiting in the scattered disc in the outermost regions of the Solar System. The object was discovered on 9 September 2010, by American astronomers David Rabinowitz, Megan Schwamb and Suzanne Tourtellotte at ESO's La Silla Observatory in northern Chile.

    (445473) 2010 VZ98 (provisional designation 2010 VZ98) is a trans-Neptunian object of the scattered disc, orbiting the Sun in the outermost region of the Solar System. It has a diameter of approximately 400 kilometers.

    2010 TJ is a trans-Neptunian object from the scattered disc in the outermost region of the Solar System and measures approximately 460 kilometers in diameter. It was first observed by American astronomers David Rabinowitz, Megan Schwamb, and Suzanne Tourtellotte at ESO's La Silla Observatory in northern Chile on 2 October 2010.

    <span class="nowrap">(82158) 2001 FP<sub>185</sub></span>

    (82158) 2001 FP185 (provisional designation 2001 FP185) is a highly eccentric trans-Neptunian object from the scattered disc in the outermost part of the Solar System, approximately 330 kilometers in diameter. It was discovered on 26 March 2001, by American astronomer Marc Buie at Kitt Peak National Observatory in Arizona, United States.

    <span class="nowrap">(523692) 2014 EZ<sub>51</sub></span>

    (523692) 2014 EZ51 (provisional designation 2014 EZ51) is a large trans-Neptunian object in the scattered disc, approximately 700 kilometres (430 miles) in diameter. It was discovered on 18 April 2010, by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii, United States.

    <span class="nowrap">(127546) 2002 XU<sub>93</sub></span>

    (127546) 2002 XU93, provisional designation 2002 XU93, is a trans-Neptunian object and centaur on highly inclined and eccentric orbit in the outer region of the Solar System. It measures approximately 170 kilometers (110 mi) in diameter and is one of few objects with such an unusual orbit. It was discovered on 4 December 2002, by American astronomer Marc Buie at the Kitt Peak National Observatory in Arizona, United States.

    2005 RH52 is an extreme trans-Neptunian object from the extended scattered disc in the outermost region of the Solar System, approximately 130 kilometers (81 miles) in diameter. It was first observed on 3 September 2005, by astronomers with the Canada–France Ecliptic Plane Survey using the Canada–France–Hawaii Telescope at the Mauna Kea Observatories in Hawaii, United States.

    <span class="nowrap">2013 FS<sub>28</sub></span>

    2013 FS28 is an extreme trans-Neptunian object from the extended scattered disc on a highly eccentric orbit in the outermost region of the Solar System. It measures approximately 466 kilometers (290 miles) in diameter. The detached, extended scattered disc object belongs to the group of extreme trans-Neptunian objects. It was first observed on 16 March 2013, by American astronomers Scott Sheppard and Chad Trujillo at the Cerro Tololo Observatory in Chile.

    2013 UH15 is an extreme trans-Neptunian object from the extended scattered disc in the outermost region of the Solar System, approximately 130 kilometers (81 miles) in diameter. It was first observed on 29 October 2013, by astronomers at the Las Campanas Observatory in the southern Atacama Desert of Chile. The detached extended scattered disc object (ESDO) is on a highly eccentric orbit and belongs to the extreme trans-Neptunian objects.

    (523683) 2014 CP23, provisional designation 2014 CP23, is a trans-Neptunian object from the scattered disc located in the outermost region of the Solar System It was discovered on 29 October 2011, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States. The dwarf planet candidate measures approximately 267 kilometers (170 miles) in diameter.

    References

    1. 1 2 3 4 5 6 7 "42301 (2001 UR163)". Minor Planet Center. Retrieved 27 July 2021.
    2. ↑ Marsden, Brian G. (14 November 2001). "MPEC 2001-V57: 2001 QX322, 2001 UR163, 2001 VN71". IAU – Minor Planet Center. Minor Planet Electronic Circulars. Archived from the original on 11 April 2010. (K01UG3R*)
    3. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 42301 (2001 UR163)" (2021-01-08 last obs.). Jet Propulsion Laboratory . Retrieved 27 July 2021.
    4. 1 2 3 4 Johnston, Wm. Robert (18 August 2020). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 27 July 2021.
    5. ↑ Marc W. Buie. "Orbit Fit and Astrometric record for 42301". SwRI–Southwest Research Institute . Retrieved 27 July 2021. The Deep Ecliptic Survey Object Classifications
    6. 1 2 3 4 5 Fernández-Valenzuela, E.; Pinilla-Alonso, N.; Stansberry, J.; Emery, J. P.; Perkins, W.; Van Laerhoven, C.; et al. (February 2021). "Compositional Study of Trans-Neptunian Objects at λ > 2.2 μm". The Planetary Science Journal. 2 (1): 10. arXiv: 2011.07121 . Bibcode:2021PSJ.....2...10F. doi: 10.3847/PSJ/abc34e . ISSN   2632-3338. S2CID   234003733.
    7. 1 2 "LCDB Data for (42301)". Asteroid Lightcurve Database (LCDB). Retrieved 27 July 2021.
    8. 1 2 3 4 Belskaya, Irina N.; Barucci, Maria A.; Fulchignoni, Marcello; Dovgopol, Anatolij N. (April 2015). "Updated taxonomy of trans-neptunian objects and centaurs: Influence of albedo". Icarus. 250: 482–491. Bibcode:2015Icar..250..482B. doi:10.1016/j.icarus.2014.12.004.
    9. 1 2 "Asteroid (42301) 2001 UR163 – Ephemerides". AstDyS-2, Asteroids – Dynamic Site, Department of Mathematics, University of Pisa. Retrieved 27 July 2021.
    10. 1 2 Tancredi, Gonzalo; Favre, Sofía (June 2008). "Which are the dwarfs in the Solar System?" (PDF). Icarus. 195 (2): 851–862. Bibcode:2008Icar..195..851T. doi:10.1016/j.icarus.2007.12.020. ISSN   0019-1035.
    11. 1 2 Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology . Retrieved 31 August 2016.
    12. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 July 2021.
    13. ↑ "Naming of Astronomical Objects – Minor planets". IAU – International Astronomical Union. Retrieved 27 July 2021.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.