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]
| Discovery [1] | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 13 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] | |
Orbit and classification
editEfimov 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
editIn 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
editEfimov is a binary asteroid. In 2006, astronomers discovered a minor-planet moon, designated S/2006 (2754) 1 around Efimov using lightcurve observations, with a diameter of 1.29 kilometers and an orbital period of 14 hours and 46 minutes.[3][4]
Naming
editThis 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
edit- ^ a b c d e f "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.
- ^ a b c 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.
- ^ a b c d e f g h "LCDB Data for (2754) Efimov". Asteroid Lightcurve Database (LCDB). Retrieved 17 June 2017.
- ^ a b Johnston, Robert (21 September 2014). "(2754) Efimov". johnstonsarchive.net. Retrieved 17 June 2017.
- ^ a b 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
edit- 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
- 2754 Efimov at the JPL Small-Body Database
