2754 Efimov

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2754 Efimov
Discovery [1]
Discovered by T. Smirnova
Discovery site Crimean Astrophysical Obs.
Discovery date13 August 1966
Designations
(2754) Efimov
Named after
Mikhail Efimov (Russian aviator) [2]
1966 PD ·1933 WF
1966 RB ·1973 YR1
main-belt  ·(inner) [3]
Orbital characteristics [1]
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
2.2274 AU
Eccentricity 0.2330
3.32 yr (1,214 days)
100.35°
0° 17m 47.4s / day
Inclination 5.7096°
275.17°
91.098°
Known satellites 1 [4]
Physical characteristics
Dimensions 4.98 km (derived) [3]
2.44967  h (0.102070  d) [3]
0.20 (assumed) [3]
SMASS = Sa [1]  · S [3]  · L [5]
13.6 [1]  ·13.92 [3]

    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. [6] The asteroid was named after Russian aviator Mikhail Efimov. [2]

    Contents

    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. [1]

    Physical characteristics

    In the SMASS classification, Efimov is a Sa-type asteroid, which belong to the larger group of S-type asteroids. [1] It is also characterized as a L-type asteroid by PanSTARRS photometric survey. [5]

    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. [3]

    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. [3] [4]

    Mikhail Efimov (right) in 1910 MN Efimov & NE Popov.jpg
    Mikhail Efimov (right) in 1910

    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. [2] [7]

    The approved naming citation was published by the Minor Planet Center on 31 May 1988 ( M.P.C. 13173). [8]

    References

    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.
    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.
    3. 1 2 3 4 5 6 7 8 "LCDB Data for (2754) Efimov". Asteroid Lightcurve Database (LCDB). Retrieved 17 June 2017.
    4. 1 2 Johnston, Robert (21 September 2014). "(2754) Efimov". johnstonsarchive.net. Retrieved 17 June 2017.
    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.
    6. ↑ "2754 Efimov (1966 PD)". Minor Planet Center. Retrieved 17 June 2017.
    7. ↑ "First Russian Aviator – Mikhail Nikiforovich Efimov (1881-1919) Bolshevik Revolutionary". thesanghakommune.org. Retrieved 17 June 2017.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 June 2017.
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