2296 Kugultinov
Discovery [1]
Discovered byL. Chernykh
Discovery siteCrimean Astrophysical Obs.
Discovery date18 January 1975
Designations
(2296) Kugultinov
Named after
David Kugultinov
(Soviet poet)[2]
1975 BA1 · 1941 FM
1958 DF · 1975 CE
1978 RM1
main-belt · Themis [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc75.44 yr (27,556 days)
Aphelion3.7113 AU
Perihelion2.6512 AU
3.1813 AU
Eccentricity0.1666
5.67 yr (2,073 days)
180.53°
0° 10m 25.32s / day
Inclination1.2545°
42.238°
100.14°
Physical characteristics
Dimensions15.10±4.45 km[4]
20.51 km (calculated)[3]
21.07±1.77 km[5]
21.566±0.067 km[6][7]
8.43±0.02 h[8]
10 h[9]
16.850±0.004 h[10]
0.08 (assumed)[3]
0.083±0.004[6][7]
0.120±0.021[5]
0.12±0.06[4]
C [3]
11.3[5] · 11.6[6] · 11.7[1][3] · 11.77±0.23[11] · 1.80[3] · 11.94[4]

2296 Kugultinov, provisional designation 1975 BA1, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter.

It was discovered on 18 January 1975, by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory on the Crimean peninsula in Nauchnyj, and named after Soviet poet David Nikitich Kugultinov.[2][12]

Classification and orbit

Kugultinov is a carbonaceous C-type asteroid and member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.7–3.7 AU once every 5 years and 8 months (2,073 days). Its orbit has an eccentricity of 0.17 and an inclination of 1° with respect to the ecliptic.[1]

Physical characteristics

Diameter and albedo

According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer and the Japanese Akari satellite, Kugultinov measures between 15.10 and 21.566 kilometers in diameter and its surface has an albedo between 0.083 and 0.12.[4][5][6][7] The Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.08 and calculates a diameter of 20.51 kilometers based an absolute magnitude of 11.8.[3]

Lightcurves

Three different rotational lightcurves of Kugultinov were obtain from photometric observations. The first, fragmentary lightcurve by Roberto Crippa and Federico Manzini in December 2013, gave a rotation period of 10 hours with a brightness variation of 0.03 magnitude (U=1).[9] In April 2015, the result was superseded by observations made by Kim Lang at the Klokkerholm Observatory in Denmark,[a] and by a team at the U.S. University of Maryland using the iTelescope network,[b] obtaining a period of 16.850 (U=2) and 8.4332±0.0224 hours (U=2+) with an amplitude of 0.23 and 0.19, respectively.[8][10] CALL considers the shorter period solution the better result.[3]

Naming

This minor planet was named after David Nikitich Kugultinov (1922–2006), prominent Soviet poet and national poet of the Republic of Kalmykia (also see 2287 Kalmykia).[2] The approved naming citation was published by the Minor Planet Center on 2 December 1990 (M.P.C. 17465).[13]

Notes

  1. ^ The minor planet 2296 Kugultinov was observed on 13 nights between 2015 March 13 and April 21. The analysis yielded a synodic period of rotation of P = 16.850 ± 0.004 h and amplitude of A = 0.23 mag. This result is in disagreement with a previously reported period of P = 10.41 h.
  2. ^ Photometric observations of main-belt asteroid 2296 Kugultinov were made over a period of five nights spanning 2015 March 27 to April 20. The measured rotation period is 8.4332 ± 0.0224 h.

References

  1. ^ a b c d "JPL Small-Body Database Browser: 2296 Kugultinov (1975 BA1)" (2016-08-27 last obs.). Jet Propulsion Laboratory. Retrieved 3 July 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(2296) Kugultinov". Dictionary of Minor Planet Names – (2296) Kugultinov. Springer Berlin Heidelberg. p. 187. doi:10.1007/978-3-540-29925-7_2297. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f g h "LCDB Data for (2296) Kugultinov". Asteroid Lightcurve Database (LCDB). Retrieved 24 June 2016.
  4. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
  5. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  6. ^ a b c d 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:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. S2CID 35447010. Retrieved 24 June 2016.
  7. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. S2CID 118745497. Retrieved 7 December 2016.
  8. ^ a b Hayes-Gehrke, Melissa N.; Chapin, Rebecca; Cromwell, Samuel; Castro, David; Spano, Francesca; Kyung, Justin; et al. (October 2015). "Rotation Period Determination for 2996 Kugultinov". The Minor Planet Bulletin. 42 (4): 241. Bibcode:2015MPBu...42Q.241H. ISSN 1052-8091. Retrieved 24 June 2016.
  9. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (2296) Kugultinov". Geneva Observatory. Retrieved 24 June 2016.
  10. ^ a b Lang, Kim; Jacobsen, Jens (October 2015). "A New Synodic Period for 2296 Kugultinov". The Minor Planet Bulletin. 42 (4): 284–285. Bibcode:2015MPBu...42..284L. ISSN 1052-8091. Retrieved 24 June 2016.
  11. ^ 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. S2CID 53493339. Retrieved 24 June 2016.
  12. ^ "2296 Kugultinov (1975 BA1)". Minor Planet Center. Retrieved 24 June 2016.
  13. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 June 2016.

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