1772 Gagarin
1772 Gagarin (prov. designation: 1968 CB) is a stony background asteroid from the central region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 6 February 1968, by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean Peninsula. The asteroid was named after cosmonaut Yuri Gagarin.
Shape model of Gagarin from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | L. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 6 February 1968 |
| Designations | |
MPC designation | (1772) Gagarin |
Named after | Yuri Gagarin (cosmonaut) |
Alternative designations | 1968 CB · 1940 GA 1942 VZ · 1948 ET 1960 FH · 1969 OO |
Minor planet category | main-belt · (middle) |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 76.21 yr (27,835 days) |
| Aphelion | 2.7924 AU |
| Perihelion | 2.2610 AU |
Semi-major axis | 2.5267 AU |
| Eccentricity | 0.1051 |
Orbital period (sidereal) | 4.02 yr (1,467 days) |
Mean anomaly | 90.345° |
Mean motion | 0° 14m 43.44s / day |
| Inclination | 5.7423° |
Longitude of ascending node | 88.181° |
| 93.442° | |
| Physical characteristics | |
| Dimensions | 8.00 km (derived) 8.838±0.644 9.634±0.105 km |
Synodic rotation period | 10.93791±0.00005 h 10.94130±0.00005 h 10.9430±0.0049 h 10.96 h |
| 0.1380±0.0085 0.164±0.039 0.20 (assumed) | |
| L · S B–V = 0.920 | |
| 12.626±0.002 (R) · 12.7 · 12.80±0.45 · 12.85 | |
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