Global Information1214 Richilde information
 Shape model of Richilde from its lightcurve | |
| Discovery[1][2] | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 1 January 1932 |
| Designations | |
MPC designation | (1214) Richilde |
Named after | unknown[3] |
Alternative designations | 1932 AA · 1930 QD 1961 PC |
Minor planet category | main-belt · (middle)[4] background[5] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.52 yr (31,602 days) |
| Aphelion | 3.0319 AU |
| Perihelion | 2.3881 AU |
Semi-major axis | 2.7100 AU |
| Eccentricity | 0.1188 |
Orbital period (sidereal) | 4.46 yr (1,629 days) |
Mean anomaly | 207.11° |
Mean motion | 0° 13m 15.24s / day |
| Inclination | 9.8345° |
Longitude of ascending node | 285.92° |
Argument of perihelion | 32.580° |
| Physical characteristics | |
| Dimensions | 30.70±12.73 km[6] 33.26±8.39 km[7] 33.651±8.835 km[8] 34.134±0.253 km[9] 34.94±0.50 km[10] 35.22 km (derived)[4] 35.29±3.2 km[11] 36.668±0.575 km[12] 39.58±11.00 km[13] |
Synodic rotation period | 9.860 h[14] 9.86687±0.00005 h[15] 9.870±0.001 h[16] |
Geometric albedo | 0.044±0.051[13] 0.048±0.015[12] 0.0517 (derived)[4] 0.0518±0.0853[8] 0.0550±0.0055[9] 0.06±0.02[7] 0.0619±0.013[11] 0.064±0.002[10] 0.07±0.04[6] |
Spectral type | SMASS = Xk[1] · P[9] |
Absolute magnitude (H) | 10.90[10][11] · 11.03[13] · 11.09[8] · 11.09±0.40[17] · 11.10[4][7][9][14] · 11.20[1][6] |
1214 Richilde, provisional designation 1932 AA, is a dark background asteroid from the central regions of the asteroid belt, approximately 35 kilometers in diameter. It was discovered by Max Wolf at Heidelberg Observatory in 1932. Any reference of the asteroid's name to a person is unknown.[2][3]
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