5144 Achates
| Discovery[1] | |
|---|---|
| Discovered by | Shoemaker, C. S. |
| Discovery site | Palomar |
| Discovery date | 2 December 1991 |
| Designations | |
|
Named after
|
Achates |
| 1991 XX | |
| Jupiter Trojan[1] | |
| Orbital characteristics[1] | |
| Epoch 2012-Mar-14 | |
| Aphelion | 6.6242 AU (Q) |
| Perihelion | 3.7895 AU (q) |
| 5.2068 AU (a) | |
| Eccentricity | 0.27220 |
| 11.88 yr | |
| 32.550° (M) | |
| Inclination | 8.9028° |
| 322.85° | |
| 331.41° | |
| Physical characteristics | |
| Dimensions | 92km (IRAS)[1] |
| 5.958 hr[1] | |
| Albedo | 0.0576[1] |
| 14.09 to 17.84 | |
| 8.90[1] | |
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5144 Achates (1991 XX) is a Jupiter Trojan discovered on December 2, 1991 by Shoemaker, C. S. at Palomar.
Photometric observations of this asteroid during 1996 were used to build a light curve showing a rotation period of 5.949 ± 0.014 hours with a brightness variation of 0.20 ± 0.01 magnitude.[2]
Of the 230+ Jupiter trojans with an absolute magnitude (H) brighter than 11, it currently has the most eccentric orbit.[3]
References
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- Orbital simulation from JPL (Java) / Ephemeris
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