7385 Aktsynovia

7385 Aktsynovia
Discovery [1]
Discovered by N. Chernykh
Discovery site CrAO – Nauchnyj
Discovery date 22 October 1981
Designations
MPC designation 7385 Aktsynovia
Named after
 Lyudmila Aktsynova
Arkadij Aktsynov
(Russian painters)[2]
1981 UQ11 · 1990 DP1
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 34.48 yr (12,594 days)
Aphelion 2.691 AU
Perihelion 2.0894 AU
2.3902 AU
Eccentricity 0.1258
3.7 yr (1,350 days)
115.6931°
0° 16m 0.12s / day
Inclination 3.7331°
77.9413°
357.1622°
Physical characteristics
Dimensions 8.854±0.115 km[4]
8.57±2.04 km[5]
3.98 km (calculated)[3]
4.1186±0.0008 h[6]
0.0566±0.0109[4]
0.073±0.034[5]
0.20 (assumed)[3]
S [3]
14.0[1][4]
14.02±0.56[7]
13.80[5]
13.918±0.002 (R)[6]
14.37[3]

    7385 Aktsynovia, provisional designation 1981 UQ11, is an asteroid from the inner regions of the asteroid belt, approximately between 4 and 9 kilometers in diameter, depending on its assumed spectral type. It was discovered on 22 October 1981, by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.[8]

    The asteroid orbits the Sun at a distance of 2.1–2.7 AU once every 3 years and 8 months (1,350 days). Its orbit has an eccentricity of 0.13 and an inclination of 4° with respect to the plane of the ecliptic.[1] No precovery was ever taken for this asteroid.[8]

    According to the survey carried out by NASA's spaced-based Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the asteroid measures 8.9 and 8.6 kilometers in diameter, respectively, with a corresponding albedo of 0.06 and 0.07.[4][5] However, rather than classifying the body as a C-type asteroid, the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a much smaller diameter of 4.0 kilometers, based on an absolute magnitude of 14.37.[3]

    A rotational light-curve of this asteroid was obtained from photometric observations made at the U.S. Palomar Transient Factory in December 2011. The light-curve gave a rotation period of 4.1186±0.0008 hours with a brightness amplitude of 0.32 in magnitude (U=2).[6]

    The minor planet was named in memory of Russian artist couple Lyudmila and Arkadij Aktsynov (both 1910–1997), who were masters in landscape painting and portrait painting. Their landscape art depicted the regions of Siberia, Baikal, Sayany, Altaj and Volga.[2] Naming citation was published on 24 January 2000 (M.P.C. 38196).[9]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 7385 Aktsynovia (1981 UQ11)" (2016-04-15 last obs.). Jet Propulsion Laboratory. Retrieved 4 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (7385) Aktsynovia. Springer Berlin Heidelberg. p. 594. ISBN 978-3-540-00238-3. Retrieved 4 May 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (7385) Aktsynovia". Asteroid Lightcurve Database (LCDB). Retrieved 4 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 4 May 2016.
    5. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 4 May 2016.
    6. 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 4 May 2016.
    7. ↑ 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 4 May 2016.
    8. 1 2 "7385 Aktsynovia (1981 UQ11)". Minor Planet Center. Retrieved 4 May 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 May 2016.

    External links

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