Global Information12052 Aretaon information
| Discovery[1] | |
|---|---|
| Discovered by | E. W. Elst |
| Discovery site | La Silla Obs. |
| Discovery date | 3 May 1997 |
| Designations | |
MPC designation | (12052) Aretaon |
| Pronunciation | /ærɪˈteɪɒn/ |
Named after | Ἀρετάων Aretāōn[1] (Greek mythology) |
Alternative designations | 1997 JB16 · 1977 UG5 1999 NE62 |
Minor planet category | Jupiter trojan[1][2] Trojan[3] · background[4] |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 40.60 yr (14,828 d) |
| Aphelion | 5.5958 AU |
| Perihelion | 4.8837 AU |
Semi-major axis | 5.2397 AU |
| Eccentricity | 0.0680 |
Orbital period (sidereal) | 11.99 yr (4,381 d) |
Mean anomaly | 197.23° |
Mean motion | 0° 4m 55.92s / day |
| Inclination | 11.463° |
Longitude of ascending node | 219.79° |
Argument of perihelion | 85.727° |
| Jupiter MOID | 0.256 AU |
| TJupiter | 2.9550 |
| Physical characteristics | |
Mean diameter | 39.151±0.809 km[5] 42.23 km (calculated)[6] |
Synodic rotation period | 8.05 h[7] |
Geometric albedo | 0.057 (assumed)[6] 0.073±0.013[5] |
Spectral type | C (assumed)[6] |
Absolute magnitude (H) | 10.425±0.002 (R)[8] 10.50[5] 10.6[1][2][6] |
12052 Aretaon /ærɪˈteɪɒn/ is a mid-sized Jupiter trojan from the Trojan camp, approximately 40 kilometers (25 miles) in diameter. It was discovered on 3 May 1997, by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile.[1] The dark Jovian asteroid has a rotation period of 8.05 hours.[6] It was named after Aretaon from Greek mythology.[1]
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