231 Vindobona

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231 Vindobona

Discovery
Discovered by	Johann Palisa
Discovery date	September 10, 1882
Designations
Alternative names	1962 UJ
Minor planet category	Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	505.56 Gm (3.379 AU)
Perihelion	367.586 Gm (2.457 AU)
Semi-major axis	436.573 Gm (2.918 AU)
Eccentricity	0.158
Orbital period	1820.907 d (4.99 a)
Average orbital speed	17.44 km/s
Mean anomaly	264.553°
Inclination	5.102°
Longitude of ascending node	350.928°
Argument of perihelion	267.314°
Physical characteristics
Dimensions	82.0 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Escape velocity	unknown
Rotation period	5.547 h
Albedo	0.055
Temperature	unknown
Spectral type	unknown
Absolute magnitude	9.2

231 Vindobona is a large Main belt asteroid. Its dark surface indicates a carbon-rich composition.

It was discovered by Johann Palisa on September 10, 1882.

Vindobona is the Latin name for Vienna, Austria, the city where the discovery was made.

[edit] References

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File

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