2797 Teucer
2797 Teucer /ˈtjuːsər/ is a large Jupiter trojan from the Greek camp, approximately 110 kilometers (68 miles) in diameter. It was discovered on 4 June 1981, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, in the United States. The dark D-type asteroid belongs to the 20 largest Jupiter trojans and has a rotation period of 10.15 hours. It was named after the Greek hero and great archer, Teucer.
| Discovery | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 4 June 1981 |
| Designations | |
MPC designation | (2797) Teucer |
| Pronunciation | /ˈtjuːsər/ |
Named after | Teucer (Greek mythology) |
Alternative designations | 1981 LK · 1940 YG 1975 VA1 · 1975 XQ2 1978 EQ |
Minor planet category | Jupiter trojan Greek · background |
| Adjectives | Teucerian (Teucrian) |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.40 yr (28,272 d) |
| Aphelion | 5.5519 AU |
| Perihelion | 4.6574 AU |
Semi-major axis | 5.1046 AU |
| Eccentricity | 0.0876 |
Orbital period (sidereal) | 11.53 yr (4,213 d) |
Mean anomaly | 173.90° |
Mean motion | 0° 5m 7.8s / day |
| Inclination | 22.391° |
Longitude of ascending node | 69.934° |
| 49.042° | |
| Jupiter MOID | 0.0174 AU |
| TJupiter | 2.8440 |
| Physical characteristics | |
| Dimensions | 114.0 km × 114 km (occ.) |
Mean diameter | 89.43±0.75 km 111.14±4.1 km 113.99±2.78 km |
Synodic rotation period | 10.145±0.001 h |
| 0.059±0.003 0.0624±0.005 0.073±0.007 | |
| D (Pan-STARRS) D (SDSS-MOC) V–I = 0.920±0.045 | |
| 8.40 8.7 | |
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