66 Maja
Maja /ˈmeɪə/ (minor planet designation: 66 Maja) is a carbonaceous background asteroid from the central regions of the asteroid belt, approximately 71 kilometers in diameter. It was discovered on 9 April 1861, by American astronomer Horace Tuttle at the Harvard College Observatory in Cambridge, Massachusetts, United States. The asteroid was named after Maia from Greek mythology.
Lightcurve-based 3D-model of Maja | |
| Discovery | |
|---|---|
| Discovered by | H. P. Tuttle |
| Discovery site | Harvard College Obs. |
| Discovery date | 9 April 1861 |
| Designations | |
MPC designation | (66) Maja |
| Pronunciation | /ˈmeɪ.ə/ |
Named after | Maia (Greek mythology) |
Alternative designations | 1947 FO · 1974 KR 1992 OX10 · A902 UF A906 QD |
Minor planet category | main-belt · (middle) background |
| Adjectives | Majan |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 156.54 yr (57,178 days) |
| Aphelion | 3.1021 AU |
| Perihelion | 2.1884 AU |
Semi-major axis | 2.6453 AU |
| Eccentricity | 0.1727 |
Orbital period (sidereal) | 4.30 yr (1,571 days) |
Mean anomaly | 241.56° |
Mean motion | 0° 13m 44.76s / day |
| Inclination | 3.0461° |
Longitude of ascending node | 7.5071° |
| 44.071° | |
| Physical characteristics | |
Mean diameter | 62.87±15.72 km 62.901±19.42 km 71.79±0.92 km 71.82±5.3 km 74.30±21.31 km 82.28±2.11 km |
| Mass | ~1.8×1017 kg (calculated) |
Mean density | 1.38 g/cm3 (assumed) |
Synodic rotation period | 9.733 h 9.73509±0.00005 h 9.73570±0.00005 h 9.736±0.009 h 9.74±0.05 h 9.761±0.03 h |
| 0.03±0.01 0.037±0.052 0.05±0.02 0.0618±0.010 0.062±0.002 0.0759±0.0615 | |
| Tholen = C · C SMASS = Ch B–V = 0.697 U–B = 0.360 V–R = 0.374±0.010 | |
| 9.18 · 9.18±0.35 · 9.36 · 9.44±0.09 · 9.48 · 9.84 | |
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