11351 Leucus
| Discovery | |
|---|---|
| Discovered by | SCAP |
| Discovery site | Beijing Xinglong Obs. |
| Discovery date | 12 October 1997 |
| Designations | |
| MPC designation | 11351 Leucus |
| Pronunciation | /ˈljuːkəs/ |
|
Named after
|
Leucus (Greek mythology) |
| 1997 TS25 · 1996 VP39 | |
|
Jupiter trojan (Greek camp) |
|
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 33.87 yr (12,372 days) |
| Aphelion | 5.6204 AU |
| Perihelion | 4.9497 AU |
| 5.2851 AU | |
| Eccentricity | 0.0635 |
| 12.15 yr (4,438 days) | |
| 225.26° | |
| 0° 4m 51.96s / day | |
| Inclination | 11.558° |
| 251.09° | |
| 161.20° | |
| Jupiter MOID | 0.1006 AU |
| Jupiter Tisserand parameter | 2.9550 |
| Physical characteristics | |
| Dimensions |
34.155±0.646 34.16±0.65 km 42.07 km (derived) 42.16±4.0 km (IRAS:2) |
| 515±1.3 h | |
| 0.0524 (derived) 0.0627±0.014 (IRAS:2) 0.079±0.013 |
|
|
B–V = 0.739±0.044 V–R = 0.498±0.044 V–I = 0.900±0.057 C |
|
| 10.7 11.38±0.00 |
|
11351 Leucus (/ˈljuːkəs/), provisional designation 1997 TS25, is a dark Jupiter trojan. It is an exceptionally slow rotator approximately 42 kilometers in diameter. It was discovered on 12 October 1997, by the Beijing Schmidt CCD Asteroid Program (SCAP) at Xinglong Station in the Chinese province of Hebei.
The C-type asteroid is located in the Greek camp of Jupiter's leading L4Lagrangian point. It orbits the Sun at a distance of 4.9–5.6 AU once every 12 years and 2 months (4,438 days). Its orbit has an eccentricity of 0.06 and an inclination of 12° with respect to the ecliptic. The first precovery was taken at Siding Spring Observatory in 1982, extending the asteroid's observation arc by 15 years prior to its discovery.
During spring 2013, a rotational light-curve was obtained from photometric observations made by Robert Stevens and Daniel Coley at the Center for Solar System Studies (CS3), California, using a 0.35/0.4-meter Schmidt-Cassegrain telescope. The light-curve showed an exceptionally slow rotation period of 515±1.3 hours with a brightness variation of 0.53±0.1 in magnitude (U=2+). No evidence of a non-principal axis rotation (NPAR) was found.
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