3801 Thrasymedes
3801 Thrasymedes /θræsɪˈmiːdiːz/ is a mid-sized Jupiter trojan from the Greek camp, approximately 34 kilometers (21 miles) in diameter. It was discovered on 6 November 1985, by astronomers with the Spacewatch survey at the Kitt Peak National Observatory in Arizona, United States. The dark Jovian asteroid has a rotation period of 20.3 hours and forms an asteroid pair with 1583 Antilochus. It was named after Thrasymedes from Greek mythology.
| Discovery | |
|---|---|
| Discovered by | Spacewatch |
| Discovery site | Kitt Peak National Obs. |
| Discovery date | 6 November 1985 |
| Designations | |
MPC designation | (3801) Thrasymedes |
| Pronunciation | /θræsɪˈmiːdiːz/ |
Named after | Thrasymedes (Greek mythology) |
Alternative designations | 1985 VS |
Minor planet category | Jupiter trojan Greek · background |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.25 yr (23,102 d) |
| Aphelion | 5.4436 AU |
| Perihelion | 5.2033 AU |
Semi-major axis | 5.3234 AU |
| Eccentricity | 0.0226 |
Orbital period (sidereal) | 12.28 yr (4,486 d) |
Mean anomaly | 230.75° |
Mean motion | 0° 4m 48.72s / day |
| Inclination | 28.496° |
Longitude of ascending node | 209.47° |
| 204.93° | |
| Jupiter MOID | 0.0096 AU |
| TJupiter | 2.7550 |
| Physical characteristics | |
Mean diameter | 34.28±0.42 km |
Synodic rotation period | 20.270±0.672 h |
| 0.066±0.015 | |
| C (assumed) | |
| 10.9 11.0 | |
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