1977 Shura

1977 Shura
Discovery [1]
Discovered by T. Smirnova
Discovery site Crimean Astrophysical Obs.
Discovery date 30 August 1970
Designations
MPC designation 1977 Shura
Named after
 Aleksandr Kosmodemyansky [2]
(Hero of the Soviet Union)
1970 QY · 1942 RW
1952 UT1 · 1968 DE
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 62.11 yr (22,685 days)
Aphelion 2.9837 AU
Perihelion 2.5785 AU
2.7811 AU
Eccentricity 0.0728
4.64 yr (1,694 days)
36.0527°
0° 12m 45s / day
Inclination 7.7655°
332.2665°
310.3874°
Physical characteristics
Dimensions 14.89 km (calculated)[3]
16.27±0.65 km[4]
18.497±0.124 km[5]
7.461±0.004 h[6]
0.1311±0.0069[5]
0.185±0.016[4]
0.20 (assumed)[3]
SMASS = Sq [1][7]
C [8] · S [3]
11.40[4]
11.5[1][3][5]
11.64±0.30[8]

    1977 Shura, provisional designation 1970 QY, is a stony asteroid from the outer region of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 30 August 1970, by Russian female astronomer Tamara Smirnova at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula.[9]

    The asteroid orbits the Sun at a distance of 2.6–3.0 AU once every 4 years and 8 months (1,694 days). Its orbit has an eccentricity of 0.07 and an inclination of 8° with respect to the plane of the ecliptic.[1] The first used precovery was taken at Goethe Link Observatory in 1952, extending the asteroid's observation arc by 18 years prior to its discovery. However, the first observations at Turku Observatory date back to 1942.[9]

    A rotational light-curve was obtained from photometric measurements made at the Australian Oakley Southern Sky Observatory in March 2010. It gave a well-defined rotation period of 7.461±0.004 hours with a brightness amplitude of 0.34 in magnitude (U=3).[6]

    According to the space-based surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 16.3 and 18.5 kilometers in diameter, respectively, and its surface has a corresponding albedo of 0.19 and 0.13.[4][5] The Collaborative Asteroid Lightcurve Link (CALL) assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 14.9 kilometers.[3] While CALL groups the body into the stony S-class,[3] and the SMASS taxonomic scheme classifies it as a transitional Sq-subtype to the elusive Q-type body's of the main-belt,[1][7] the large-scale survey by Pan-STARRS finds a different spectral type of a carbonaceous C-type asteroid.[8]

    The minor planet was named after Aleksandr Kosmodemyansky (1925–1945), Hero of the Soviet Union, who died at the age of 19 during the Great Patriotic War, shortly after the Battle of Königsberg. "Shura" is a pet name for Aleksandr. The minor planets 1793 Zoya and 2072 Kosmodemyanskaya were named in honor of his sister and mother, respectively.[2] Naming citation was published before November 1977 (M.P.C. 4190).[10]

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 1977 Shura (1970 QY)" (2016-04-15 last obs.). Jet Propulsion Laboratory. Retrieved 15 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1977) Shura. Springer Berlin Heidelberg. p. 159. ISBN 978-3-540-00238-3. Retrieved 15 May 2016.
    3. 1 2 3 4 5 6 7 "LCDB Data for (1977) Shura". Asteroid Lightcurve Database (LCDB). Retrieved 15 May 2016.
    4. 1 2 3 4 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. Retrieved 15 May 2016.
    5. 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 15 May 2016.
    6. 1 2 Albers, Kenda; Kragh, Katherine; Monnier, Adam; Pligge, Zachary; Stolze, Kellen; West, Josh; et al. (October 2010). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2009 October thru 2010 April". The Minor Planet Bulletin. 37 (4): 152–158. Bibcode:2010MPBu...37..152A. ISSN 1052-8091. Retrieved 17 November 2015.
    7. 1 2 Binzel, R. P.; Masi, G.; Foglia, S.; Vernazza, P.; Burbine, T. H.; Thomas, C. A.; et al. (March 2007). "Searching for V-type and Q-type Main-Belt Asteroids Based on SDSS Colors". 38th Lunar and Planetary Science Conference. Bibcode:2007LPI....38.1851B. Retrieved 17 November 2015.
    8. 1 2 3 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 15 May 2016.
    9. 1 2 "1977 Shura (1970 QY)". Minor Planet Center. Retrieved 15 May 2016.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 15 May 2016.

    External links

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