4936 Butakov

4936 Butakov
Discovery [1]
Discovered by L. V. Zhuravleva
Discovery site CrAO – Nauchnyj
Discovery date 22 October 1985
Designations
MPC designation 4936 Butakov
Named after
 Grigory Butakov
(Russian admiral)[2]
1985 UY4 · 1978 TK4
1978 VH12
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 65.06 yr (23,762 days)
Aphelion 2.5622 AU
Perihelion 1.9908 AU
2.2765 AU
Eccentricity 0.1255
3.43 yr (1,255 days)
315.793°
0° 17m 13.2s / day
Inclination 5.913°
155.7716°
283.8587°
Physical characteristics
Dimensions 4.867±0.025 km[4]
5.41 km (calculated)[3]
13.828±0.001 h[5]
19.200±0.380 h[6]
13.9078±0.3029 h[7]
0.3589±0.0587[4]
0.24 (assumed)[3]
S [3]
13.5[1][3]
13.3[4]
13.400±0.080 (R)[6]
13.418±0.001 (R)[7]

    4936 Butakov, provisional designation 1985 UY4, is a stony Flora asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered on 22 October 1985, by Soviet–Ukrainian female astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.[8]

    The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.6 AU once every 3 years and 5 months (1,254 days). Its orbit has an eccentricity of 0.13 and an inclination of 6° with respect to the plane of the ecliptic.[1] The first precovery was obtained at the U.S. Goethe Link Observatory in 1950, extending the asteroid's observation arc by 35 years prior to its discovery.[8]

    According to the survey carried out by NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 4.9 kilometers in diameter and its surface has a high albedo of 0.36,[4] while the Collaborative Asteroid Lightcurve Link assumes an intermediate albedo of 0.24 – which derives from 8 Flora, the largest member and namesake of this orbital family – and calculates a somewhat larger diameter of 5.4 kilometers.[3]

    In 2007, a rotational light-curves of this asteroid was obtained at the Carbuncle Hill Observatory which gave a rotation period of 13.828±0.001 hours with a brightness amplitude of 0.14 in magnitude (U=2).[5] Two more light-curves were obtained from photometric observations made at the U.S. Palomar Transient Factory in January and February 2014. They showed a rotation period of 19.200±0.380 and 13.9078±0.3029 hours, respectively, with a corresponding brightness variation of 0.11 and 0.08 in magnitude (U=2/2).[6][7]

    The minor planet was named in memory of Russian admiral Grigory Butakov (1820–1882), who fought in the Crimean War. In 1856, when the war ended, he became Rear admiral of the Black Sea Fleet and Naval Governor of Nikolaev and Sevastopol. The minor planet 2121 Sevastopol is named after the city on the Crimean peninsula.[2] Butakov is widely credited as being the father of steam-powered ship tactics during the 19th century. Naming citation was published on 4 May 1999 (M.P.C. 34620).[9]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 4936 Butakov (1985 UY4)" (2015-08-05 last obs.). Jet Propulsion Laboratory. Retrieved 2 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4936) Butakov. Springer Berlin Heidelberg. p. 425. ISBN 978-3-540-00238-3. Retrieved 2 May 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (4936) Butakov". Asteroid Lightcurve Database (LCDB). Retrieved 2 May 2016.
    4. 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 2 May 2016.
    5. 1 2 Pray, Donald P.; Galad, Adrian; Husarik, Marek; Oey, Julian (March 2008). "Lightcurve Analysis of Fourteen Asteroids". The Minor Planet Bulletin. 35 (1): 34–36. Bibcode:2008MPBu...35...34P. ISSN 1052-8091. Retrieved 2 May 2016.
    6. 1 2 3 Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493Freely accessible. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 2 May 2016.
    7. 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 2 May 2016.
    8. 1 2 "4936 Butakov (1985 UY4)". Minor Planet Center. Retrieved 2 May 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 2 May 2016.

    External links

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