Leonteus
| Discovery | |
|---|---|
| Discovered by |
C. Shoemaker E. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 11 October 1985 |
| Designations | |
| MPC designation | 3793 Leonteus |
| Pronunciation | leɪˈɒntiəs (lay-on'-tee-əs) |
|
Named after
|
Leonteus (Greek mythology) |
|
1985 TE3 · 1951 WT1 1961 TB · 1973 UJ3 1978 GO · 1980 KX1 1986 XO |
|
|
Jupiter trojan (Greek camp) |
|
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 54.86 yr (20,039 days) |
| Aphelion | 5.6801 AU |
| Perihelion | 4.7473 AU |
| 5.2137 AU | |
| Eccentricity | 0.0895 |
| 11.90 yr (4,348 days) | |
| 161.46° | |
| 0° 4m 58.08s / day | |
| Inclination | 20.903° |
| 200.52° | |
| 263.17° | |
| Jupiter MOID | 0.1256 AU |
| Jupiter Tisserand parameter | 2.8610 |
| Physical characteristics | |
| Dimensions |
86.26±7.9 km (IRAS:14) 86.38 km (derived) 87.58±2.53 km 112.046±1.846 km |
|
5.608±0.01 h 5.618±0.002 h 5.6225±0.0005 h 11.22±0.01 h |
|
|
0.042±0.005 0.070±0.004 0.0717±0.015 (IRAS:14) 0.0784 (derived) |
|
| C | |
| 8.7 · 8.8 | |
3793 Leonteus (LAY-on'-TEE-əs), provisional designation 1985 TE3, is a carbonaceous Jupiter trojan from the Greek camp, approximately 86 kilometers in diameter. It was discovered by American astronomer couple Carolyn and Eugene Shoemaker at the U.S Palomar Observatory, California, on 11 October 1985.
The dark C-type asteroid is orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of its orbit (see Trojans in astronomy). It orbits the Sun at a distance of 4.7–5.7 AU once every 11 years and 11 months (4,348 days). Its orbit has an eccentricity of 0.09 and an inclination of 21° with respect to the ecliptic. The first used precovery was taken at Goethe Link Observatory in 1961, extending the asteroid's observation arc by 24 years prior to its discovery, while the first unused observation at McDonald Observatory dates back to 1951.
Several photometric light-curve observations have been performed. The best rated analysis by Stefano Mottola and Anders Erikson using the Dutch 0.9-metre Telescope at La Silla, Chile, in June 1994. The light-curve gave a rotation period of 5.6225±0.0005 hours with a brightness variation of 0.24±0.01 magnitude (U=2+). Other analysis gave similar results. In addition, an ambiguous light-curve by Robert Stevens at the U.S. Center for Solar System Studies (CS3), California, also rendered an alternative solution of 11.22±0.01 hours, or twice a long as all other periods measured (U=2).
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