(25) Phocaea

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(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)
Spectral class
(according to SMASSII)
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.

See also