25 Phocaea

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25 Phocaea
Discovery
Discovered by J. Chacornac
Discovery date April 6, 1853
Designations
Alternate name 1956 GC
Minor planet
category		 Main belt (Phocaea family)
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 (H) 7.83

25 Phocaea (pronounced /foʊˈsiːə/, Greek: Φώκαια) is a Main belt asteroid.

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.

[edit] References

  1. ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_DERIVED_LIGHTCURVE_V8_0/data/lc.tab
  2. ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_ALBEDOS_V1_1/data/albedos.tab
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