28 Bellona
|
Discovery
|
| Discovered by |
R. Luther |
| Discovery date |
March 1, 1854 |
|
Designations
|
| Alternative names |
1951 CC2 |
Minor planet
category |
Main belt |
|
Orbital characteristics
|
| Epoch June 14, 2006 (JD 2453900.5) |
| Aphelion |
477.240 Gm (3.190 AU) |
| Perihelion |
353.977 Gm (2.366 AU) |
| Semi-major axis |
415.608 Gm (2.778 AU) |
| Eccentricity |
0.148 |
| Orbital period |
1691.362 d (4.63 a) |
| Average orbital speed |
17.77 km/s |
| Mean anomaly |
353.997° |
| Inclination |
9.401° |
| Longitude of ascending node |
144.503° |
| Argument of perihelion |
342.548° |
|
Physical characteristics
|
| Dimensions |
120.9 km † |
| Mass |
1.9×1018? kg |
| Mean density |
2.0? g/cm³ |
| Equatorial surface gravity |
0.0338? m/s² |
| Escape velocity |
0.0639? km/s |
| Rotation period |
0.65396 d (15.695 h) [1] |
| Albedo |
0.1763 [2] |
| Temperature |
~163 K |
| Spectral type |
S |
| Absolute magnitude |
7.09 |
28 Bellona (pronounced /bɛˈloʊnə/, Latin: Bellōna) is a large main belt asteroid.
Bellona was discovered by R. Luther on March 1, 1854. It is named after Bellona, the Roman goddess of war; the name was chosen to mark the beginning of the Crimean War.
References
1. ^ http://www.psi.edu/pds/asteroid/
2. ^ http://www.psi.edu/pds/asteroid/
