Global Information2207 Antenor information
| Discovery [1] | |
|---|---|
| Discovered by | N. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 19 August 1977 |
| Designations | |
MPC designation | (2207) Antenor |
| Pronunciation | /ænˈtiːnər/[2] |
Named after | Antenor (Greek mythology)[3] |
Alternative designations | 1977 QH1 · 1959 EM 1971 BE1 · 1978 UU |
Minor planet category | Jupiter trojan [1][4][5] Trojan [6][7] · background [7] |
| Adjectives | Antenorian |
| Orbital characteristics [4] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 59.20 yr (21,622 d) |
| Aphelion | 5.2316 AU |
| Perihelion | 5.0584 AU |
Semi-major axis | 5.1450 AU |
| Eccentricity | 0.0168 |
Orbital period (sidereal) | 11.67 yr (4,263 d) |
Mean anomaly | 73.993° |
Mean motion | 0° 5m 4.2s / day |
| Inclination | 6.8058° |
Longitude of ascending node | 159.14° |
Argument of perihelion | 304.18° |
| Known satellites | 1 (unconfirmed)[8] |
| Jupiter MOID | 0.202 AU |
| TJupiter | 2.9860 |
| Physical characteristics | |
Mean diameter | 85.11±3.7 km[9] 91.32±2.22 km[10] 97.66±0.50 km[11] |
Synodic rotation period | 7.906±0.009 h[12][a] 7.960±0.0103 h (S)[13] 7.966±0.0055 h (R)[13] 7.964±0.002 h[14][a] 7.965±0.004 h[15] 8.01 h[16] |
Geometric albedo | 0.051±0.003[11] 0.059±0.003[10] 0.0678±0.006[9] |
Spectral type | D (Tholen)[4][5] D0 (Barucci)[17] U–B = 0.232±038[4] B–V = 0.770±0.050[18] V–R = 0.450±0.030[18] V–I = 0.950±0.026[5] |
Absolute magnitude (H) | 8.863±0.002 (R)[13] 8.89[1][4][5][9][10][11] 9.16±0.19[19] 9.304±0.002 (S)[13] |
2207 Antenor /ænˈtiːnər/ is a large Jupiter trojan from the Trojan camp, approximately 92 kilometers (57 miles) 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.[1] The dark D-type asteroid is one of the 30 largest Jupiter trojans and has a rotation period of 7.97 hours.[5] It was named for the Trojan hero and sage Antenor, from Greek mythology.[3] In October 2018, it was reported that Antenor is likely a binary system. If confirmed, it would be 5th known binary Jupiter trojan.[8]
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