2296 Kugultinov, provisional designation 1975 BA1, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter.
Discovery [1] | |
---|---|
Discovered by | L. Chernykh |
Discovery site | Crimean Astrophysical Obs. |
Discovery date | 18 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 arc | 75.44 yr (27,556 days) |
Aphelion | 3.7113 AU |
Perihelion | 2.6512 AU |
3.1813 AU | |
Eccentricity | 0.1666 |
5.67 yr (2,073 days) | |
180.53° | |
0° 10m 25.32s / day | |
Inclination | 1.2545° |
42.238° | |
100.14° | |
Physical characteristics | |
Dimensions | 15.10±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] | |
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]
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]
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]
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a rotation period of 10 hours with a brightness variation of 0.03 magnitude (U=1).[9] In April 2015, the result was superseded by observations made by Kim Lang at the Klokkerholm Observatory in Denmark,[a] and by a team at the U.S. University of Maryland using the iTelescope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]
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]