9963 Sandage
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9963 Sandage, provisional designation 1992 AN, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.
Quick Facts Discovery, Discovered by ...
![]() Orbits of Sandage (blue), the inner planets (red) and Jupiter (outermost) | |
Discovery [1] | |
---|---|
Discovered by | E. F. Helin |
Discovery site | Palomar Obs. |
Discovery date | 9 January 1992 |
Designations | |
(9963) Sandage | |
Named after | Allan Sandage (American astronomer)[2] |
1992 AN · 1976 NH 1989 CK6 | |
main-belt · Phocaea [3][4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 28.13 yr (10,276 days) |
Aphelion | 2.9982 AU |
Perihelion | 1.6833 AU |
2.3408 AU | |
Eccentricity | 0.2809 |
3.58 yr (1,308 days) | |
132.58° | |
0° 16m 30.72s / day | |
Inclination | 23.461° |
116.97° | |
241.14° | |
Physical characteristics | |
Dimensions | 5.45 km (calculated)[3] 6.371±0.174 km[5][6] |
4.6502±0.0008 h[7] 4.65053±0.00013 h[8] | |
0.158±0.025[5][6] 0.23 (assumed)[3] | |
S [3] | |
12.9[1] · 12.95±0.25[9] · 13.080±0.002 (R)[7] · 13.53[3] · 13.6[5] | |
Close
It was discovered by American astronomer Eleanor Helin at the Palomar Observatory in California on 9 January 1992, and later named after American astronomer Allan Sandage.[2][10]