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2121 Sevastopol

Main-belt asteroid binary

Summary

Main-belt asteroid binary

Field	Value
minorplanet	yes
name	2121 Sevastopol
background	#D6D6D6
discovery_ref
discovered	27 June 1971
discoverer	T. Smirnova
discovery_site	Crimean Astrophysical Obs.
mpc_name	(2121) Sevastopol
pronounced
alt_names	1971 ME1932 HM
1936 WD1938 DY
1939 TO1952 SZ
1978 WG
named_after	Sevastopol city
mp_category	main-beltFlora
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	79.82 yr (29,154 days)
aphelion	2.5731 AU
perihelion	1.7945 AU
semimajor	2.1838 AU
eccentricity	0.1783
period	3.23 yr (1,179 days)
mean_anomaly	94.889°
mean_motion	/ day
inclination	4.3780°
asc_node	145.72°
arg_peri	160.38°
satellites	1
dimensions	km
12.48 km (calculated)
rotation	2.90640 h
albedo	0.24 (assumed)

spectral_type	S
abs_magnitude	12.2

1936 WD1938 DY 1939 TO1952 SZ

1978 WG 12.48 km (calculated)

13 hours, 6 minutes

2121 Sevastopol, provisional designation , is a stony Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 27 June 1971, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. Its minor-planet moon was discovered in 2010.

Orbit and characterization

Sevastopol is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,179 days). Its orbit has an eccentricity of 0.18 and an inclination of 4° with respect to the ecliptic.

Satellite

In 2010, a minor-planet moon was discovered around Sevastopol, orbiting at a distance of 26 kilometers with a diameter of 3.54 ± 0.17 km.

Naming

The asteroid was named after the Crimean city on the 200th anniversary of its foundation. The approved naming citation was published by the Minor Planet Center on 28 January 1983 (M.P.C. 7616).

References

{{MW. Sevastopol

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

flora-asteroids discoveries-by-tamara-mikhaylovna-smirnova named-minor-planets binary-asteroids astronomical-objects-discovered-in-1971

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