2207 Antenor
| Discovery | |
|---|---|
| Discovered by | N. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 19 August 1977 |
| Designations | |
| MPC designation | 2207 Antenor |
| Pronunciation | ænˈtiːnɔːr (an-tee'-nor) |
|
Named after
|
Antenor (Greek mythology) |
|
1977 QH1 · 1959 EM 1971 BE1 · 1978 UU |
|
|
Jupiter trojan (Trojan camp) |
|
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 57.17 yr (20,883 days) |
| Aphelion | 5.2286 AU |
| Perihelion | 5.0537 AU |
| 5.1412 AU | |
| Eccentricity | 0.0170 |
| 11.66 yr (4,258 days) | |
| 43.397° | |
| 0° 5m 4.2s / day | |
| Inclination | 6.8079° |
| 159.14° | |
| 300.89° | |
| Jupiter MOID | 0.1925 AU |
| Jupiter Tisserand parameter | 2.9860 |
| Physical characteristics | |
| Dimensions |
85.11±3.7 km (IRAS:9) 91.32±2.22 km 97.658±0.504 97.66±0.50 km |
|
7.906±0.009 h 7.9604±0.0103 h 7.965±0.002 h 7.9656±0.0103 h 8.01 h |
|
|
0.051±0.003 0.059±0.003 0.0678±0.006 (IRAS:9) |
|
|
B–V = 0.733 U–B = 0.232 Tholen = D · D |
|
| 8.863±0.002 (S) · 8.89 · 9.16±0.19 · 9.2 · 9.304±0.002 (R) | |
2207 Antenor (an-TEE'-nor), provisional designation 1977 QH1, is a rare-type Jupiter trojan from the Trojan camp, approximately 85 kilometers in diameter. It was discovered on 19 August 1977, by Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.
The dark and reddish body is classified as a D-type asteroid in the Tholen taxonomic scheme. This spectral type is rather rare with only 46 bodies known as of 2016. The Jupiter trojan is orbiting in the trailering Trojan camp, at Jupiter's L5 Lagrangian point, 60° behind its orbit (see Trojans in astronomy). It orbits the Sun at a distance of 5.1–5.2 AU once every 11 years and 8 months (4,258 days). Its orbit has an eccentricity of 0.02 and an inclination of 7° with respect to the ecliptic. The asteroid's observation arc begins with its discovery in 1977. The first unused precoveries were taken at Lowell Observatory and the discovering observatory in 1959 and 1971, respectively.
...
Wikipedia