397 Vienna

397 Vienna
Discovery
Discovered by	Auguste Charlois
Discovery date	December 19, 1894
Designations
Named after	Vienna
Alternative names	1894 BM
Minor planet category	Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	491.295 Gm (3.284 AU)
Perihelion	297.033 Gm (1.986 AU)
Semi-major axis	394.164 Gm (2.635 AU)
Eccentricity	0.246
Orbital period	1562.13 d (4.28 a)
Average orbital speed	18.35 km/s
Mean anomaly	315.367°
Inclination	12.835°
Longitude of ascending node	228.271°
Argument of perihelion	139.451°
Physical characteristics
Dimensions	43.3±1.8 km
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Escape velocity	unknown
Rotation period	15.48 h
Albedo	0.178±0.015
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	9.31

397 Vienna is a typical Main belt asteroid. The Tholen spectral type is S and the SMASSII spectral type is K.

It was discovered by Auguste Charlois on December 19, 1894 in Nice.

References

Yeomans, Donald K. (2007-05-02). "397 Vienna (1894 BM)". JPL Small-Body Database Browser. Retrieved 2007-05-02.

External links

397 Vienna at the JPL Small-Body Database

Discovery · Orbit diagram · Orbital elements · Physical parameters

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