397 Vienna

397 Vienna
	Orbital diagram
Discovery
Discovered by	Auguste Charlois
Discovery date	19 December 1894
Designations
MPC designation	(397) Vienna
Pronunciation	/viˈɛnə/
Named after	Vienna
Alternative designations	1894 BM
Minor planet category	Main belt
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	117.45 yr (42,900 d)
\|{{{apsis}}}\|helion}}	3.28657 astronomical unit\|AU (491.664 Gm)
\|{{{apsis}}}\|helion}}	1.98686 AU (297.230 Gm)
Semi-major axis	2.63671 AU (394.446 Gm)
Eccentricity	0.24646
Orbital period	4.28 yr (1,563.8 d)
Mean anomaly	202.358°
Mean motion	0° 13m 48.731s / day
Inclination	12.8534°
Longitude of ascending node	227.935°
\|{{{apsis}}}\|helion}}	139.975°
Physical characteristics
Dimensions	49.032±1.055 km
Rotation period	15.48 h (0.645 d)
Geometric albedo	0.1776±0.015
Absolute magnitude (H)	9.31

Short description: Main-belt asteroid

Vienna (minor planet designation: 397 Vienna) is a typical Main belt asteroid. It was discovered by French astronomer Auguste Charlois on 19 December 1894 in Nice, and was most likely named after the city of Vienna, Austria.^[3] This object is orbiting the Sun at a distance of 2.64 astronomical unit|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

↑ "Vienna". Vienna. Oxford University Press. http://www.lexico.com/definition/Vienna.
↑ ^2.0 ^2.1 ^2.2 Yeomans, Donald K. (2007-05-02). "397 Vienna (1894 BM)". JPL Small-Body Database Browser. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=397.
↑ Schmadel, Lutz (2003). Dictionary of minor planet names. 1. Springer. p. 48. ISBN 9783540002383. https://books.google.com/books?id=VoJ5nUyIzCsC&pg=PA48.
↑ 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.
↑ Clark, Beth Ellen et al. (July 2009). "Spectroscopy of K-complex asteroids: Parent bodies of carbonaceous meteorites?". Icarus 202 (1): 119–133. doi:10.1016/j.icarus.2009.02.027. Bibcode: 2009Icar..202..119C.

External links

397 Vienna at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
397 Vienna at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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Original source: https://en.wikipedia.org/wiki/397 Vienna. Read more

[Lexico-1] "Vienna". Vienna. Oxford University Press. http://www.lexico.com/definition/Vienna.

[jpldata-2] 2.0 ^2.1 ^2.2 Yeomans, Donald K. (2007-05-02). "397 Vienna (1894 BM)". JPL Small-Body Database Browser. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=397.

[Schmadel_2003-3] Schmadel, Lutz (2003). Dictionary of minor planet names. 1. Springer. p. 48. ISBN 9783540002383. https://books.google.com/books?id=VoJ5nUyIzCsC&pg=PA48.

[Pilcher_et_al_2017-4] 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.

[Clark_et_al_2009-5] Clark, Beth Ellen et al. (July 2009). "Spectroscopy of K-complex asteroids: Parent bodies of carbonaceous meteorites?". Icarus 202 (1): 119–133. doi:10.1016/j.icarus.2009.02.027. Bibcode: 2009Icar..202..119C.