588 Achilles
Achilles (minor planet designation: 588 Achilles) is a large Jupiter trojan asteroid of the Greek camp. Achilles was the first Jupiter trojan to be discovered, and was discovered by Max Wolf at the Heidelberg Observatory in 1906. Wolf named the minor planet after the legendary hero Achilles from Greek mythology. The dark D-type asteroid measures approximately 133 kilometers (83 miles) in diameter which makes it one of the 10 largest Jupiter trojans. It has a rotation period of 7.3 hours and possibly a spherical shape.
Modelled shape of Achilles from its light curve | |
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 22 February 1906 |
| Designations | |
MPC designation | (588) Achilles |
| Pronunciation | /əˈkɪliːz/ |
Named after | Achilles (Greek mythology) |
Alternative designations | 1906 TG |
Minor planet category | Jupiter trojan Greek · background |
| Adjectives | Achillean /ˌækɪˈliːən, əˈkɪliən/ |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 112.25 yr (41,000 d) |
| Aphelion | 5.9714 AU |
| Perihelion | 4.4467 AU |
Semi-major axis | 5.2091 AU |
| Eccentricity | 0.1463 |
Orbital period (sidereal) | 11.89 yr (4,343 d) |
Mean anomaly | 205.11° |
Mean motion | 0° 4m 58.44s / day |
| Inclination | 10.318° |
Longitude of ascending node | 316.54° |
| 133.50° | |
| Jupiter MOID | 0.5704 AU |
| TJupiter | 2.9460 |
| Physical characteristics | |
Mean diameter | 130.10±0.55 km 133.22±3.33 km 135.47±4.1 km |
Synodic rotation period | 7.306±0.002 h |
| 0.0328±0.002 0.035±0.002 0.043±0.006 | |
| Tholen = DU B–V = 0.755 U–B = 0.216 V–I = 0.940±0.019 | |
| 8.47 8.67 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.