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2754 Efimov

Main-belt asteroid

Summary

Main-belt asteroid

Field	Value
minorplanet	yes
name	2754 Efimov
background	#D6D6D6
discovery_ref
discovered	13 August 1966
discoverer	T. Smirnova
discovery_site	Crimean Astrophysical Obs.
mpc_name	(2754) Efimov
alt_names	1966 PD1933 WF
1966 RB
named_after	Mikhail Efimov (Russian aviator)
mp_category	main-belt(inner)
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	66.15 yr (24,160 days)
aphelion	2.7464 AU
perihelion	1.7085 AU
semimajor	2.2274 AU
eccentricity	0.2330
period	3.32 yr (1,214 days)
mean_anomaly	100.35°
mean_motion	/ day
inclination	5.7096°
asc_node	275.17°
arg_peri	91.098°
satellites	1
dimensions	4.98 km (derived)
rotation	2.44967 h
albedo	0.20 (assumed)
spectral_type	SMASS = SaSL
abs_magnitude	13.613.92

1966 RB

2754 Efimov, provisionally named , is a stony asteroid and binary system from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 13 August 1966, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named after Russian aviator Mikhail Efimov.

Orbit and classification

Efimov orbits the Sun in the inner main-belt at a distance of 1.7–2.7 AU once every 3 years and 4 months (1,214 days). Its orbit has an eccentricity of 0.23 and an inclination of 6° with respect to the ecliptic.

Physical characteristics

In the SMASS classification, Efimov is a Sa-type asteroid, which belong to the larger group of S-type asteroids. It is also characterized as a L-type asteroid by PanSTARRS photometric survey.

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 4.98 kilometers with an absolute magnitude of 13.92.

Satellite

Efimov is a binary asteroid. In 2006, astronomers discovered a minor-planet moon around Efimov using lightcurve observations, with a diameter of 1.29 kilometers and an orbital period of 14 hours and 46 minutes.

Naming

This minor planet named in memory of Russian aviator Mikhail Nikiforovich Efimov (; 1881–1919), who was the first to realize steep turns and dives.

The approved naming citation was published by the Minor Planet Center on 31 May 1988 (M.P.C. 13173).

References

|archive-url = https://web.archive.org/web/20200920032155/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002754 |url-status = dead |archive-date = 20 September 2020

|access-date= 17 June 2017}}

|display-authors = 6 |access-date= 6 December 2016}}

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.

background-asteroids discoveries-by-tamara-mikhaylovna-smirnova named-minor-planets binary-asteroids sa-type-asteroids-(smass) astronomical-objects-discovered-in-1966

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