2754 Efimov

2754 Efimov
Discovery
Discovered by	T. Smirnova
Discovery site	Crimean Astrophysical Obs.
Discovery date	13 August 1966
Designations
Named after	Mikhail Efimov (Russian aviator)
Alternative designations	1966 PD · 1933 WF; 1966 RB · 1973 YR1
Minor planet category	main-belt · (inner)
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	66.15 yr (24,160 days)
Aphelion	2.7464 AU
Perihelion	1.7085 AU
Semi-major axis	2.2274 AU
Eccentricity	0.2330
Orbital period (sidereal)	3.32 yr (1,214 days)
Mean anomaly	100.35°
Mean motion	0° 17m 47.4s / day
Inclination	5.7096°
Longitude of ascending node	275.17°
Argument of perihelion	91.098°
Known satellites	1
Physical characteristics
Dimensions	4.98 km (derived)
Synodic rotation period	2.44967 h (0.102070 d)
Geometric albedo	0.20 (assumed)
Spectral type	SMASS = Sa · S · L
Absolute magnitude (H)	13.6 · 13.92

2754 Efimov, provisionally named 1966 PD, 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 (Russian: М. Н. Ефимов; 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

1 2 3 4 5 6 "JPL Small-Body Database Browser: 2754 Efimov (1966 PD)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 17 June 2017.
1 2 3 Schmadel, Lutz D. (2007). "(2754) Efimov". Dictionary of Minor Planet Names – (2754) Efimov. Springer Berlin Heidelberg. p. 226. doi:10.1007/978-3-540-29925-7_2755. ISBN 978-3-540-00238-3.
1 2 3 4 5 6 7 8 "MinorPlanet.info: One Asteroid Information". Asteroid Lightcurve Database (LCDB). Search using Number = "2754"
1 2 Johnston, Robert (21 September 2014). "(2754) Efimov". johnstonsarchive.net. Retrieved 17 June 2017.
1 2 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 6 December 2016.
↑ "2754 Efimov (1966 PD)". Minor Planet Center. Retrieved 17 June 2017.
↑ "First Russian Aviator – Mikhail Nikiforovich Efimov (1881-1919) Bolshevik Revolutionary". thesanghakommune.org. Retrieved 17 June 2017.
↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 June 2017.

External links

First in the sky: Mikhail Efimov is a pioneer of Russian aviation
Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
2754 Efimov at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
2754 Efimov at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[jpldata-1] 1 2 3 4 5 6 "JPL Small-Body Database Browser: 2754 Efimov (1966 PD)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 17 June 2017.

[springer-2] 1 2 3 Schmadel, Lutz D. (2007). "(2754) Efimov". Dictionary of Minor Planet Names – (2754) Efimov. Springer Berlin Heidelberg. p. 226. doi:10.1007/978-3-540-29925-7_2755. ISBN 978-3-540-00238-3.

[lcdb-3] 1 2 3 4 5 6 7 8 "MinorPlanet.info: One Asteroid Information". Asteroid Lightcurve Database (LCDB). Search using Number = "2754"

[johnstonsarchive-4] 1 2 Johnston, Robert (21 September 2014). "(2754) Efimov". johnstonsarchive.net. Retrieved 17 June 2017.

[Veres-2015-5] 1 2 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 6 December 2016.

[MPC-Efimov-6] "2754 Efimov (1966 PD)". Minor Planet Center. Retrieved 17 June 2017.

[Bio-Efimov-7] "First Russian Aviator – Mikhail Nikiforovich Efimov (1881-1919) Bolshevik Revolutionary". thesanghakommune.org. Retrieved 17 June 2017.

[MPC-Circulars-Archive-8] "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 June 2017.