(25) Phocaea
|
Asteroid (25) Phocaea |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Phocaea family |
| Major semi-axis | 2.4 AU |
| eccentricity | 0.256 |
| Perihelion - aphelion | 1.785 AU - 3.015 AU |
| Inclination of the orbit plane | 21.6 ° |
| Length of the ascending node | 214.2 ° |
| Argument of the periapsis | 90.3 ° |
| Time of passage of the perihelion | February 5, 2010 |
| Sidereal period of rotation | 3 a 261 d |
| Mean orbital velocity | 18.9 km / s |
| Physical Properties | |
| Medium diameter | 61 km |
| Albedo | 0.350 |
| Rotation period | 9 h 56 min |
| Absolute brightness | 7.8 likes |
|
Spectral class (according to Tholen) |
S. |
|
Spectral class (according to SMASSII) |
S. |
| history | |
| Explorer | Jean Chacornac |
| Date of discovery | April 6, 1853 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(25) Phocaea is an asteroid of the main belt , which on April 6, 1853 by Jean Chacornac was discovered. The name was adopted from the ancient Greek city of Phokaia .
Phocaea moves in an eccentric orbit around the Sun at a distance of 1.8 ( perihelion ) to 3.0 ( aphelion ) astronomical units in 3.72 years . At 21.6 ° , the orbit is very strongly inclined towards the ecliptic , the orbital eccentricity is 0.26.
Phocaea has a mean diameter of about 61 kilometers. It rotates around its own axis in around 10 hours. It has a relatively light, silicate-rich surface with an albedo of 0.350.