397 Vienna

397 Vienna
Orbital diagram
Discovery
Discovered byAuguste Charlois
Discovery date19 December 1894
Designations
(397) Vienna
Pronunciation/viˈɛnə/[1]
Named after
Vienna
1894 BM
Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc117.45 yr (42,900 d)
Aphelion3.28657 AU (491.664 Gm)
Perihelion1.98686 AU (297.230 Gm)
2.63671 AU (394.446 Gm)
Eccentricity0.24646
4.28 yr (1,563.8 d)
202.358°
0° 13m 48.731s / day
Inclination12.8534°
227.935°
139.975°
Physical characteristics
Dimensions49.032±1.055 km
15.48 h (0.645 d)
0.1776±0.015
9.31

397 Vienna is a typical Main belt asteroid. It was discovered by French astronomer Auguste Charlois on 19 December 1894 in Nice. It was most likely named after the city of Vienna, Austria.[3] This object is orbiting the Sun at a distance of 2.64 AU with an orbital eccentricity (ovalness) of 0.246 and a period of 4.28 yr. The orbital plane is inclined at an angle of 12.85° to the ecliptic.[2]

Photometric observations from multiple sites during 2017 were combined to produce an irregular light curve showing a rotation period of 15.461±0.001 h with a luminosity amplitude of 0.16±0.02 in magnitude. This result is consistent with previous measurements.[4] The Tholen spectral type of this object is S and the SMASSII spectral type is K. Although the 'S' class suggests a stony composition, the latter class is consistent with carbonaceous chondrite meteorites.[5] Infrared observations from NEOWISE indicate a diameter of 49 km.[2]

References

  1. ^ "Vienna". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 14 September 2020.
  2. ^ a b c Yeomans, Donald K. (2 May 2007). "397 Vienna (1894 BM)". JPL Small-Body Database Browser. Retrieved 2 May 2007.
  3. ^ Schmadel, Lutz (2003). Dictionary of minor planet names. Vol. 1. Springer. p. 48. ISBN 9783540002383.
  4. ^ Pilcher, Frederick; et al. (October 2017). "Rotation Period Determination for 397 Vienna". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 44 (4): 316. Bibcode:2017MPBu...44..316P.
  5. ^ Clark, Beth Ellen; et al. (July 2009). "Spectroscopy of K-complex asteroids: Parent bodies of carbonaceous meteorites?". Icarus. 202 (1): 119–133. Bibcode:2009Icar..202..119C. doi:10.1016/j.icarus.2009.02.027.


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