227 Philosophia
Appearance
Discovery | |
---|---|
Discovered by | P.P. Henry |
Discovery date | 12 August 1882 |
Designations | |
Named after | Philosophy |
A919 AA, 1933 SD1, 1949 OO1 | |
Main belt | |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 108.20 yr (39519 d) |
Aphelion | 3.7673 AU (563.58 Gm) |
Perihelion | 2.56007 AU (382.981 Gm) |
3.16366 AU (473.277 Gm) | |
Eccentricity | 0.19079 |
5.63 yr (2055.3 d) | |
Average orbital speed | 16.78 km/s |
71.2570° | |
0° 10m 30.554s / day | |
Inclination | 9.1539° |
326.254° | |
267.020° | |
Earth MOID | 1.57001 AU (234.870 Gm) |
Jupiter MOID | 1.44273 AU (215.829 Gm) |
TJupiter | 3.156 |
Physical characteristics | |
Dimensions | 87.31±2.4 km |
52.98 h (2.208 d) | |
0.0768±0.004 | |
9.1 | |
227 Philosophia is a large main-belt asteroid that was discovered by the French astronomer Paul-Pierre Henry on August 12, 1882, in Paris and named after the topic of philosophy. Based upon photometric observations, it has a synodic rotation period of 52.98 ± 0.01 with a brightness variation of 0.15 ± 0.02 in magnitude.[2]
References
- ^ Yeomans, Donald K., "227 Philosophia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- ^ Pilcher, Frederick; Alkema, Michael S. (July 2014), "Rotation Period Determination for 227 Philosophia", The Minor Planet Bulletin, 41 (3): 188–189, Bibcode:2014MPBu...41..188P.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- 227 Philosophia at the JPL Small-Body Database