26 Proserpina
|
Discovery
|
| Discovered by |
R. Luther |
| Discovery date |
May 5, 1853 |
|
Designations
|
| Alternative names |
1935 KK; 1954 WD1 |
Minor planet
category |
Main belt |
|
Orbital characteristics
|
| Epoch June 14, 2006 (JD 2453900.5) |
| Aphelion |
431.898 Gm (2.887 AU) |
| Perihelion |
362.816 Gm (2.425 AU) |
| Semi-major axis |
397.357 Gm (2.656 AU) |
| Eccentricity |
0.087 |
| Orbital period |
1581.184 d (4.33 a) |
| Average orbital speed |
18.24 km/s |
| Mean anomaly |
115.619° |
| Inclination |
3.562° |
| Longitude of ascending node |
45.884° |
| Argument of perihelion |
193.120° |
|
Physical characteristics
|
| Dimensions |
95.1 km |
| Mass |
9.0×1017? kg |
| Mean density |
2.0? g/cm³ |
| Equatorial surface gravity |
0.0266? m/s² |
| Escape velocity |
0.0503? km/s |
| Rotation period |
0.4417 d (10.60 h) [1] |
| Albedo |
0.1955 [2] |
| Temperature |
~166 K |
| Spectral type |
S |
| Absolute magnitude |
7.5 |
26 Proserpina (pronounced /proˈsɚpɪnə/, Latin: Proserpi?na) is a Main belt asteroid.
It was discovered by R. Luther on May 5, 1853.
It is named after the Roman goddess Proserpina, the daughter of Ceres and the Queen of the Underworld.
References
1. ^ http://www.psi.edu/pds/asteroid/
2. ^ http://www.psi.edu/pds/asteroid/