2296 Kugultinov

2296 Kugultinov
Discovery [1]
Discovered by L. Chernykh
Discovery site Crimea–Nauchnij
Discovery date 18 January 1975
Designations
MPC designation 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 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 75.24 yr (27,482 days)
Aphelion 3.7113 AU
Perihelion 2.6493 AU
3.1803 AU
Eccentricity 0.1670
5.67 yr (2,072 days)
111.05°
0° 10m 25.68s / day
Inclination 1.2545°
42.236°
100.11°
Physical characteristics
Dimensions 21.48 km (calculated)[3]
21.566±0.067 km[4]
8.43±0.02 h[5]
10 h[6]
16.850±0.004 h[7]
0.08 (assumed)[3]
0.0830±0.0038[4]
C [3]
11.6[4]
11.7[1][3]
11.77±0.23[8]

    2296 Kugultinov, provisional designation 1975 BA1, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 22 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.[9]

    The C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.6–3.7 AU once every 5 years and 8 months (2,072 days). Its orbit has an eccentricity of 0.17 and an inclination of 1° with respect to the ecliptic.[1]

    According to the space-based survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 21.6 kilometers in diameter and its surface has an albedo of 0.083,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.08 and calculates a diameter of 21.5 kilometers, based on an absolute magnitude of 11.7.[3]

    Three different rotational light-curves for this asteroid were obtain from photometric observations. The first, fragmentary light-curve by Roberto Crippa and Federico Manzini in December 2013, gave a rotation period of 10 hours with a brightness variation of 0.03 in magnitude (U=1).[6] In April 2015, the result was superseded by observations made by Kim Lang at the Klokkerholm Observatory in Denmark,[lower-alpha 1] and by a team at the U.S. University of Maryland using the iTelescope network,[lower-alpha 2] obtaining a period of 16.850±0.004 (U=2) and 8.4332±0.0224 hours (U=2+) with an amplitude of 0.23 and 0.19, respectively.[5][7] CALL considers the shorter period solution the better result.[3]

    The minor planet is named after David Nikitich Kugultinov (1922–2006), prominent Soviet poet and national poet of the Republic of Kalmykia (also see 2287 Kalmykia).[2] Naming citation was published on 2 December 1990 (M.P.C. 17465).[10]

    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. 1 2 3 4 "JPL Small-Body Database Browser: 2296 Kugultinov (1975 BA1)" (2016-06-14 last obs.). Jet Propulsion Laboratory. Retrieved 24 June 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2296) Kugultinov. Springer Berlin Heidelberg. p. 187. ISBN 978-3-540-00238-3. Retrieved 24 June 2016.
    3. 1 2 3 4 5 6 7 "LCDB Data for (2296) Kugultinov". Asteroid Lightcurve Database (LCDB). Retrieved 24 June 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 24 June 2016.
    5. 1 2 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.
    6. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (2296) Kugultinov". Geneva Observatory. Retrieved 24 June 2016.
    7. 1 2 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.
    8. ↑ 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 24 June 2016.
    9. ↑ "2296 Kugultinov (1975 BA1)". Minor Planet Center. Retrieved 24 June 2016.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 June 2016.

    External links

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