231 Vindobona

231 Vindobona

Discovery
Discovered by	Johann Palisa
Discovery date	10 September 1882
Designations
Named after	Vienna
Alternative names	1962 UJ
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	131.05 yr (47865 d)
Aphelion	3.3648 AU (503.37 Gm)
Perihelion	2.4810 AU (371.15 Gm)
Semi-major axis	2.9229 AU (437.26 Gm)
Eccentricity	0.15120
Orbital period	5.00 yr (1825.2 d)
Average orbital speed	17.44 km/s
Mean anomaly	12.6140°
Mean motion	0° 11^m 50.064^s / day
Inclination	5.1021°
Longitude of ascending node	350.535°
Argument of perihelion	268.609°
Earth MOID	1.47235 AU (220.260 Gm)
Jupiter MOID	1.7388 AU (260.12 Gm)
Jupiter Tisserand parameter	3.256
Physical characteristics
Dimensions	82.33±2.1 km
Rotation period	14.245 h (0.5935 d)
Geometric albedo	0.0545±0.003
Absolute magnitude (H)	9.6

231 Vindobona is a large Main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on September 10, 1882. Vindobona is the Latin name for Vienna, Austria, the city where the discovery was made.

Its dark surface indicates a carbon-rich composition.

Photometric observations at the Organ Mesa Observatory in New Mexico during 2012 showed a rotation period of 14.245 ± 0.001 hours with a brightness variation of 0.20 ± 0.03 in magnitude. This is in agreement with previous results.^[2]

References

1. "231 Vindobona". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
2. Pilcher, Frederick (April 2013), "Rotation Period Determinations for 24 Themis, 159 Aemilia 191 Kolga, 217 Eudora, 226 Weringia, 231 Vindobona, and 538 Friederike", The Minor Planet Bulletin, 40 (2): 85–87, Bibcode:2013MPBu...40...85P.

External links

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File
• 231 Vindobona at the JPL Small-Body Database
  
  • Discovery · Orbit diagram · Orbital elements · Physical parameters