623 Chimaera is a minor planet orbiting the Sun.
| Discovery | |
|---|---|
| Discovered by | K. Lohnert |
| Discovery site | Heidelberg |
| Discovery date | 22 January 1907 |
| Designations | |
MPC designation | (623) Chimaera |
| Pronunciation | /kaɪˈmɪərə/[1] |
Named after | Chimera |
Alternative designations | 1907 XJ |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 106.49 yr (38896 d) |
| Aphelion | 2.7396 AU (409.84 Gm) |
| Perihelion | 2.1819 AU (326.41 Gm) |
Semi-major axis | 2.4607 AU (368.12 Gm) |
| Eccentricity | 0.11331 |
Orbital period (sidereal) | 3.86 yr (1409.9 d) |
Mean anomaly | 186.178° |
Mean motion | 0° 15m 19.224s / day |
| Inclination | 14.127° |
Longitude of ascending node | 308.337° |
Argument of perihelion | 124.416° |
| Physical characteristics | |
Mean radius | 22.045±0.5 km |
Synodic rotation period | 14.635 h (0.6098 d) |
Geometric albedo | 0.0372±0.002 |
Absolute magnitude (H) | 10.97 |
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