Discovery [1] [2] | |
---|---|
Discovered by | A. C. Becker A. W. Puckett J. Kubica |
Discovery site | Apache Point Obs. |
Discovery date | 4 November 2007 |
Designations | |
(527604) 2007 VL305 | |
2007 VL305 | |
Neptune trojan · L4 [3] centaur [1] · distant [2] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 4 | |
Observation arc | 5.19 yr (1,894 days) |
Aphelion | 31.729 AU |
Perihelion | 28.122 AU |
29.926 AU | |
Eccentricity | 0.0603 |
163.71 yr (59,795 days) | |
10.760° | |
0° 0m 21.6s / day | |
Inclination | 28.155° |
188.69° | |
216.70° | |
Physical characteristics | |
Mean diameter | 110 km (est. at 0.10) [4] 160 km [5] |
22.2 [5] | |
7.9 [1] | |
(527604) 2007 VL305, provisional designation 2007 VL305, is an inclined Neptune trojan that shares Neptune's orbit in the L4 Lagrangian point. It was discovered on 4 November 2007, by astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica at the Apache Point Observatory in New Mexico, United States, although images from 2005 have also been recovered. [2] It measures approximately 160 kilometers in diameter and was the sixth Neptune trojan to be discovered. [3] As of 2016 [update] , it is 34.1 AU from Neptune. [6]
Neptune trojans can be considered resonant trans-Neptunian objects in a 1:1 mean-motion orbital resonance with Neptune. These trojans have a semi-major axis and an orbital period very similar to Neptune's (30.10 AU; 164.8 years).
2007 VL305 belongs to the leading L4 group, which orbits 60° ahead of Neptune's orbit. It orbits the Sun with a semi-major axis of 29.926 AU at a distance of 28.1–31.7 AU once every 163 years and 9 months (59,795 days). Its orbit has an eccentricity of 0.06 and an inclination of 28° with respect to the ecliptic. [1] Its inclination is almost as high as that of 2011 HM102 . [3]
The discoverers estimate that 2007 VL305 has a mean diameter of 160 kilometers based on a magnitude of 22.2. [5] Based on a generic magnitude-to-diameter conversion, it measures approximately 110 kilometers in diameter using an absolute magnitude of 7.9 with an assumed albedo of 0.10. [4]
This minor planet was numbered by the Minor Planet Center on 18 May 2019 ( M.P.C. 114650). [7] As of 2019, it has not been named. [2] If named, it will follow the naming scheme already established with 385571 Otrera and 385695 Clete, which is to name these objects after figures related to the Amazons, an all-female warrior tribe that fought in the Trojan War on the side of the Trojans against the Greek. [8]
(612243) 2001 QR322, prov. designation: 2001 QR322, is a minor planet and the first Neptune trojan discovered, by American astronomer Marc Buie of the Deep Ecliptic Survey at Cerro Tololo Observatory in Chile on 21 August 2001. It orbits ahead of Neptune at its L4 Lagrangian point and measures approximately 132 kilometers (82 miles) in diameter.
385571 Otrera, provisional designation 2004 UP10, is a Neptune trojan leading Neptune's orbit in the outer Solar System. It was discovered by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory on 16 October 2004. It measures approximately 100 kilometers in diameter and was the second such body to be discovered after 2001 QR322.
2005 TN53 is an inclined Neptune trojan leading Neptune's orbit in the outer Solar System, approximately 80 kilometers in diameter. It was first observed on 7 October 2005, by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory in the Atacama desert of Chile. It was the third such body to be discovered, and the first with a significant orbital inclination, which showed that the population as a whole is very dynamically excited.
385695 Clete, provisional designation 2005 TO74, is a Neptune trojan, co-orbital with the ice giant Neptune, approximately 97 kilometers (60 miles) in diameter. It was named after Clete, one of the Amazons from Greek mythology. The minor planet was discovered on 8 October 2005, by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory in Chile. 23 known Neptune trojans have already been discovered.
3596 Meriones is a large Jupiter trojan from the Greek camp, approximately 80 kilometers in diameter. It was discovered on 14 November 1985, by Danish astronomers Poul Jensen and Karl Augustesen at the Brorfelde Observatory near Holbæk, Denmark. The assumed C-type asteroid belongs to the 50 largest Jupiter trojans and has a rotation period of 12.96 hours. It was named after the Cretan leader Meriones from Greek mythology.
(613490) 2006 RJ103 is a Neptune trojan, first observed by the Sloan Digital Sky Survey Collaboration at Apache Point Observatory, New Mexico, on 12 September 2006. It was the fifth and largest such body discovered, approximately 180 kilometers in diameter. As of 2016, it is 30.3 AU from Neptune.
'4501 Eurypylos is a Jupiter trojan from the Greek camp, approximately 46 kilometers in diameter. It was discovered on 4 February 1989 by Belgian astronomer Eric Elst at ESO's La Silla Observatory in Chile. The dark Jovian asteroid has a short rotation period of 6.1 hours. It was named after the Thessalian king Eurypylus from Greek mythology.
7543 Prylis is a Jupiter trojan from the Greek camp, approximately 43 kilometers in diameter. It was discovered on 19 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory, California. The dark Jovian asteroid is possibly spherical in shape and has a rotation period of 17.8 hours. It was named after Prylis, son of Hermes from Greek mythology.
3794 Sthenelos is a mid-sized Jupiter trojan from the Greek camp, approximately 40 kilometers in diameter. It was discovered on 12 October 1985, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The presumed C-type asteroid has a rotation period of 12.9 hours. It was named after the Greek warrior Sthenelus from Greek mythology.
6090 Aulis, provisional designation: 1989 DJ, is a Jupiter trojan from the Greek camp, approximately 70 kilometers in diameter. It was discovered on 27 February 1989, by Belgian astronomer Henri Debehogne at ESO's La Silla Observatory in northern Chile. The dark Jovian asteroid belongs to the 50 largest Jupiter trojans and has a rotation period of 18.5 hours. It was named for the ancient Greek port Aulis, mentioned in the Iliad.
6545 Leitus, provisional designation:1986 TR6, is a Jupiter trojan from the Greek camp, approximately 53 kilometers (33 miles) in diameter. It was discovered on 5 October 1986, by Slovak astronomer Milan Antal at the Piwnice Astronomical Observatory in Poland. The dark D-type asteroid has a rotation period of 16.3 hours and belongs to the 90 largest Jupiter trojans. Numbered in 1995, it was named in 2021, after the Argonaut Leitus from Greek mythology, who fought in the Trojan War.
2008 LC18 is a Neptune trojan first observed on 7 June 2008 by American astronomers Scott Sheppard and Chad Trujillo using the Subaru telescope at Mauna Kea Observatories on Hawaii, United States. It was the first object found in Neptune's trailing L5 Lagrangian point and measures approximately 100 kilometers in diameter.
2004 KV18 is an eccentric Neptune trojan trailing Neptune's orbit in the outer Solar System, approximately 70 kilometers in diameter. It was first observed on 24 May 2004, by astronomers at the Mauna Kea Observatories on Hawaii, United States. It was the eighth Neptune trojan identified and the second in Neptune's L5 Lagrangian point.
2011 HM102 is the ninth Neptune trojan discovered. It was first observed on 29 April 2011, during the New Horizons KBO Search (268) using the Magellan II (Clay) Telescope at Las Campanas Observatory in Chile. It has the same orbital period as Neptune and orbits at the L5 Lagrangian point about 60° backwards of Neptune.
(316179) 2010 EN65 is a trans-Neptunian object orbiting the Sun. However, with a semi-major axis of 30.8 AU, the object is actually a jumping Neptune trojan, co-orbital with Neptune, as the giant planet has a similar semi-major axis of 30.1 AU. The body is jumping from the Lagrangian point L4 into L5 via L3. As of 2016, it is 54 AU from Neptune. By 2070, it will be 69 AU from Neptune.
7641 Cteatus, provisional designation: 1986 TT6, is a large Jupiter trojan from the Greek camp, approximately 70 kilometers (43 miles) in diameter. It was discovered on 5 October 1986, by Slovak astronomer Milan Antal at the Toruń Centre for Astronomy in Piwnice, Poland. The dark D-type asteroid is notably inclined and has longer-than-average rotation period of 27.8 hours. It belongs to the 50 largest Jupiter trojans. It was named from Greek mythology for Cteatus, the conjoined twin and father of Amphimachus.
(543354) 2014 AN55 (provisional designation 2014 AN55) is a trans-Neptunian object in the scattered disc, located in the outermost region of the Solar System, that measures approximately 600 kilometres (370 mi) in diameter. It was discovered on 25 January 2014, by astronomers with the Pan-STARRS survey at Haleakala Observatory on the island of Maui, Hawaii, in the United States.
23135 Pheidas (provisional designation 2000 AN146) is a large Jupiter trojan from the Greek camp, approximately 66 kilometers (41 miles) in diameter. It was discovered on 7 January 2000, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The dark Jovian asteroid belongs to the 50 largest Jupiter trojans and has a rotation period of 8.7 hours. It was named after the Athenian warrior Pheidas from Greek mythology.
15440 Eioneus, provisional designation: 1998 WX4, is a dark Jupiter trojan from the Greek camp, approximately 66 kilometers (41 miles) in diameter. It was discovered on 19 November 1998, by astronomers with the Catalina Sky Survey at the Catalina Station near Tucson, Arizona, in the United States. The assumed C-type asteroid belongs to the 60 largest Jupiter trojans. It has a rotation period of 21.43 hours and possibly a spherical shape. It was named from Greek mythology after Eioneus who was killed by Hector.
(20729) 1999 XS143 (provisional designation 1999 XS143) is a Jupiter trojan from the Greek camp, approximately 51 kilometers (32 miles) in diameter. It was discovered on 15 December 1999, by American astronomer Charles Juels at the Fountain Hills Observatory in Arizona. The dark Jovian asteroid has a short rotation period of 5.72 hours and belongs to the 90 largest Jupiter trojans. It has not been named since its numbering in January 2001.