977 Philippa
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977 Philippa (prov. designation: A922 GA or 1922 LV) is a large background asteroid from the outer regions of the asteroid belt, approximately 65 kilometers (40 miles) in diameter. It was discovered on 6 April 1922, by Russian–French astronomer Benjamin Jekhowsky at the Algiers Observatory in Northern Africa.[1] The C-type asteroid is likely irregular in shape and has a rotation period of 15.4 hours. It was named after French financier Baron Philippe de Rothschild (1902–1988).[2]
Quick Facts Discovery, Discovered by ...
Discovery [1] | |
---|---|
Discovered by | B. Jekhovsky |
Discovery site | Algiers Obs. |
Discovery date | 6 April 1922 |
Designations | |
(977) Philippa | |
Named after | Philippe de Rothschild (French financier)[2] |
A922 GA · 1922 LV A914 YA · 1914 YA A919 XA · 1919 XA | |
main-belt [1][3] · (outer) background [4][5] | |
Orbital characteristics [3] | |
Epoch 31 May 2020 (JD 2459000.5) | |
Uncertainty parameter 0 | |
Observation arc | 105.05 yr (38,370 d) |
Aphelion | 3.1990 AU |
Perihelion | 3.0366 AU |
3.1178 AU | |
Eccentricity | 0.0260 |
5.51 yr (2,011 d) | |
355.29° | |
0° 10m 44.4s / day | |
Inclination | 15.174° |
75.739° | |
72.694° | |
Physical characteristics | |
Mean diameter | |
15.405±0.005 h[9][lower-alpha 1] | |
9.9[1][3] | |
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