.
25 Phocaea
25 Phocaea (pronounced /foʊˈsiːə/, Greek: Φώκαια) is a Main belt asteroid.
|
Discovery
|
|
|---|---|
| Discovered by | J. Chacornac |
| Discovery date | April 6, 1853 |
|
Designations
|
|
| Alternative names | 1956 GC |
| Minor planet category |
Main belt (Phocaea family) |
|
Orbital characteristics
|
|
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 450.716 Gm (3.013 AU) |
| Perihelion | 267.314 Gm (1.787 AU) |
| Semi-major axis | 359.015 Gm (2.400 AU) |
| Eccentricity | 0.255 |
| Orbital period | 1357.936 d (3.72 a) |
| Average orbital speed | 18.91 km/s |
| Mean anomaly | 6.932° |
| Inclination | 21.584° |
| Longitude of ascending node | 214.258° |
| Argument of perihelion | 90.154° |
|
Physical characteristics
|
|
| Dimensions | 75.1 km |
| Mass | 4.4×1017? kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.0210? m/s² |
| Escape velocity | 0.0397? km/s |
| Rotation period | 0.4144 d (9.945 h) [1] |
| Albedo | 0.231 [2] |
| Temperature | ~173 K |
| Spectral type | S |
| Absolute magnitude | 7.83 |
It was discovered by J. Chacornac on April 6, 1853. It was his first asteroid discovery. It is named after Phocaea, the ancient Greek name for Foça in Turkey.
References
1. ^ http://www.psi.edu/pds/asteroid/
2. ^ http://www.psi.edu/pds/asteroid/
Retrieved from "http://en.wikipedia.org/"
All text is available under the terms of the GNU Free Documentation License
