3962 Valyaev

3962 Valyaev
Discovery [1]
Discovered by T. Smirnova
Discovery site CrAO - Nauchnyj
Discovery date 8 February 1967
Designations
MPC designation 3962 Valyaev
Named after
 Valerij Valyaev
(astronomer)[2]
1967 CC · 1973 GL1
1976 UT10 · 1982 XE1
1984 DC2
main-belt (outer) · Themis [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 59.69 yr (21,801 days)
Aphelion 3.5790 AU
Perihelion 2.8410 AU
3.2100 AU
Eccentricity 0.1149
5.75 yr (2,101 days)
225.07°
0° 10m 16.68s / day
Inclination 1.9984°
49.682°
106.00°
Physical characteristics
Dimensions 16.285±0.231 km[4]
12.63 km (calculated)[3]
16.4399±0.0077 h[5]
0.0878±0.0135[4]
0.08 (assumed)[3]
C [3]
12.4[1]
12.85[3]
12.2[4]
12.403±0.005 (R)[5]
12.56±0.19[6]

    3962 Valyaev, provisional designation 1967 CC, is a carbonaceous Themis asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 8 February 1967, by Russian female astronomer Tamara Smirnova at Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.[7]

    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 2.8–3.6 AU once every 5 years and 9 months (2,101 days). Its orbit has an eccentricity of 0.11 and an inclination of 2° with respect to the plane of the ecliptic.[1] The first precovery was obtained at Palomar Observatory in 1956, extending the asteroid's observation arc by 11 years prior to its discovery.[7]

    In September 2010, a rotational light-curve was obtained from photometric observations by a survey performed at the U.S. Palomar Transient Factory in California. The light-curve gave a rotation period of 16.4399±0.0077 hours with a brightness amplitude of 0.44 in magnitude (U=2).[5]

    According to the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 16.3 kilometers in diameter and its surface has a low albedo of 0.088,[4] The Collaborative Asteroid Lightcurve Link (CALL) assumes a typical albedo for carbonaceous asteroids of 0.08 and calculates a somewhat smaller diameter of 12.6 kilometers.[3]

    The minor planet was named after Russian astronomer Valerij Ivanovich Valyaev (b. 1944), chief of the Ephemeris Astronomy Department at the Institute for Theoretical Astronomy (ITA), which was then part of the USSR Academy of Sciences in Leningrad. The minor planet 1735 ITA is named after this institute. Valyaev is also the senior editor of the periodicals Morskoj Astronomicheskij Ezhegodnik and Aviatsionnyj Astronomicheskij Ezhegodnik. The asteroids's name was proposed by ITA.[2] Naming citation was published on 18 December 1994 (M.P.C. 24410).[8]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 3962 Valyaev (1967 CC)" (2015-11-23 last obs.). Jet Propulsion Laboratory. Retrieved April 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3962) Valyaev. Springer Berlin Heidelberg. p. 338. ISBN 978-3-540-00238-3. Retrieved April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (3962) Valyaev". Asteroid Lightcurve Database (LCDB). Retrieved April 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:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved April 2016.
    5. 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:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 2016.
    6. ↑ 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. Retrieved April 2016.
    7. 1 2 "3962 Valyaev (1967 CC)". Minor Planet Center. Retrieved April 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved April 2016.

    External links


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