251 Sophia

251 Sophia
Discovery
Discovered by	Johann Palisa
Discovery date	October 4, 1885
Designations
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
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.

References

External links

251 Sophia at the JPL Small-Body Database

Discovery · Orbit diagram · Orbital elements · Physical parameters

Minor planets navigator

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