2456 Palamedes
2456 Palamedes /pæləˈmiːdiːz/ is a large Jupiter trojan from the Greek camp, approximately 90 kilometers (56 miles) in diameter. It was discovered on 30 January 1966, by astronomers at the Purple Mountain Observatory in Nanking, China. The assumed C-type asteroid has a rotation period of 7.24 hours and belongs to the 50 largest Jupiter trojans. It was named after Palamedes from Greek mythology.
| Discovery | |
|---|---|
| Discovered by | Purple Mountain Obs. |
| Discovery site | Purple Mountain Obs. |
| Discovery date | 30 January 1966 |
| Designations | |
MPC designation | (2456) Palamedes |
| Pronunciation | /pæləˈmiːdiːz/ |
Named after | Palamedes (Greek mythology) |
Alternative designations | 1966 BA1 · 1973 TJ 1977 AK1 · 1979 EF |
Minor planet category | Jupiter trojan Greek |
| Adjectives | Palamedian |
| Orbital characteristics | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.59 yr (23,955 d) |
| Aphelion | 5.5103 AU |
| Perihelion | 4.7498 AU |
Semi-major axis | 5.1301 AU |
| Eccentricity | 0.0741 |
Orbital period (sidereal) | 11.62 yr (4,244 d) |
Mean anomaly | 260.35° |
Mean motion | 0° 5m 5.28s / day |
| Inclination | 13.912° |
Longitude of ascending node | 327.36° |
| 94.744° | |
| Jupiter MOID | 0.1197 AU |
| TJupiter | 2.9370 |
| Physical characteristics | |
Mean diameter | 65.92±0.51 km 91.66±3.1 km 99.60±4.11 km |
Synodic rotation period | 7.24±0.01 h |
| 0.026±0.002 0.0304±0.002 0.071±0.010 | |
| C (assumed) V–I = 0.920±0.024 | |
| 9.3 9.4 9.60 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.