2754 Efimov

2754 Efimov

Discovery [1]
Discovered by	T. Smirnova
Discovery site	CrAO (Nauchnyj)
Discovery date	13 August 1966
Designations
MPC designation	2754 Efimov
Named after	Mikhail Efimov[2]
Alternative names	1966 PD · 1933 WF 1966 RB · 1973 YR1
Minor planet category	main-belt
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	64.28 yr (23480 days)
Aphelion	2.7466 AU (410.89 Gm)
Perihelion	1.7085 AU (255.59 Gm)
Semi-major axis	2.2275 AU (333.23 Gm)
Eccentricity	0.23301
Orbital period	3.32 yr (1214.3 d)
Mean anomaly	282.43°
Mean motion	0° 17^m 47.256^s / day
Inclination	5.7096°
Longitude of ascending node	275.17°
Argument of perihelion	91.156°
Earth MOID	0.717126 AU (107.2805 Gm)
Jupiter MOID	2.74651 AU (410.872 Gm)
Jupiter Tisserand parameter	3.602
Physical characteristics
Rotation period	2.44967 h (0.102070 d)
Spectral type	Sa (SMASSII)
Absolute magnitude (H)	13.6

2754 Efimov, provisionally named 1966 PD, is a main-belt binary asteroid discovered on August 13, 1966 by Tamara Smirnova at Nauchnyj.^[1] It is named in memory of the aviator Mikhail Nikiforovich Efimov (1881–1919), who was the first to realize steep turns and dives.^[2]

Astronomers discovered a moon around the asteroid in 2006 using lightcurve observations, with a diameter of 1.29 kilometers and an orbital period of 14 hours and 46 minutes.^[3]

References

1. "JPL Small-Body Database Browser: 2754 Efimov (1966 PD)" (2015-05-19 last obs.). Jet Propulsion Laboratory. Retrieved 15 April 2016.
2. "Dictionary of Minor Planet Names – (2754) Efimov". Springer Berlin Heidelberg. 2007. p. 226. Retrieved October 2015.
3. Johnston, Robert. "(2754) Efimov". johnstonsarchive.net. Retrieved 28 May 2015.

External links

• "2754 Efimov (1966 PD)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2002754.
• 2754 Efimov at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters