251 Sophia

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251 Sophia
Discovered by Johann Palisa
Discovery date October 4, 1885
Alternative names A907 UA, 1950 RH1,
1953 FN1
Minor planet category Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 511.622 Gm (3.42 AU)
Perihelion 413.717 Gm (2.766 AU)
Semi-major axis 462.669 Gm (3.093 AU)
Eccentricity 0.106
Orbital period 1986.59 d (5.44 a)
Average orbital speed 16.94 km/s
Mean anomaly 258.426°
Inclination 10.527°
Longitude of ascending node 156.314°
Argument of perihelion 287.098°
Physical characteristics
Dimensions 28.0 km
Mass unknown
Mean density unknown
Equatorial surface gravity unknown
Escape velocity unknown
Rotation period 20.216 h
Albedo 0.219
Temperature unknown
Spectral type unknown
Absolute magnitude (H) 10.0

251 Sophia is a main belt asteroid.

It was discovered by Johann Palisa on October 4, 1885 in Vienna and was named after Sophia, wife of astronomer Hugo von Seeliger.