1951 Lick
1951 Lick, provisional designation 1949 OA, is a rare-type asteroid and Mars-crosser, approximately 5.6 kilometers in diameter. It was discovered on 26 July 1949, by American astronomer Carl Wirtanen at Lick Observatory on the summit of Mount Hamilton, California, and named for American philanthropist James Lick.
| Discovery | |
|---|---|
| Discovered by | C. A. Wirtanen |
| Discovery site | Lick Obs. |
| Discovery date | 26 July 1949 |
| Designations | |
MPC designation | (1951) Lick |
Named after | James Lick (philanthropist) |
Alternative designations | 1949 OA |
Minor planet category | Mars-crosser |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 67.12 yr (24,514 days) |
| Aphelion | 1.4760 AU |
| Perihelion | 1.3049 AU |
Semi-major axis | 1.3904 AU |
| Eccentricity | 0.0616 |
Orbital period (sidereal) | 1.64 yr (599 days) |
Mean anomaly | 221.32° |
Mean motion | 0° 36m 3.96s / day |
| Inclination | 39.091° |
Longitude of ascending node | 130.75° |
| 140.52° | |
| Earth MOID | 0.3068 AU · 119.5 LD |
| Physical characteristics | |
| Dimensions | 5.57±0.5 km (IRAS:3) 5.59 km (derived) |
Synodic rotation period | 4.424±0.006 h 5.2974±0.0004 h 5.3008±0.0024 h 5.3016±0.0020 h 5.317±0.001 h |
| 0.0895±0.020 (IRAS:3) 0.1028 (derived) | |
| SMASS = A · A | |
| 14.20±0.2 · 14.2 · 14.35±0.2 · 14.35 · 14.5±0.2 · 14.51 | |
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