1004 Belopolskya

1004 Belopolskya
Discovery [1]
Discovered by S. Belyavskyj
Discovery site Simeiz Observatory
Discovery date 5 September 1923
Designations
MPC designation 1004 Belopolskya
Named after
 Aristarkh Belopolsky
(astrophysicist)[2]
1923 OS · 1936 WB
1937 YB · 1938 AA
1963 DC · 1974 WK
2004 SU12 · A917 TA
main-belt (outer)
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 92.57 yr (33812 days)
Aphelion 3.6985 AU (553.29 Gm)
Perihelion 3.1051 AU (464.52 Gm)
3.4018 AU (508.90 Gm)
Eccentricity 0.087208
6.27 yr (2291.7 d)
291.06°
0° 9m 25.524s / day
Inclination 2.9787°
153.54°
215.27°
Earth MOID 2.10355 AU (314.687 Gm)
Jupiter MOID 1.75186 AU (262.075 Gm)
Jupiter Tisserand parameter 3.138
Physical characteristics
Dimensions 71.60±2.1 km (IRAS:9)[3]
79.83±1.33 km[4]
Mean radius
 35.80±1.05 km
9.44±0.01 h,[5] 9.44 h (0.393 d)[1]
0.0348±0.002 (IRAS:9)[1][3]
0.028±0.001[4]
B–V = 0.720
U–B = 0.120
Tholen = PC
P [3]
9.99[1]

    1004 Belopolskya, provisional designation 1923 OS, is a large, rare-type asteroid from the outer region of the asteroid belt, about 72 kilometers in diameter. It was discovered on 5 September 1923, by Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula.[6] Eight nights later, the body was independently discovered by Max Wolf at Heidelberg Observatory in Germany.[2]

    The asteroid is classified as a PF-type asteroid in the Tholen taxonomy, a subtype of the dark and reddish P-type asteroids, of which only a few dozens bodies are currently known.[7] It orbits the Sun at a distance of 3.1–3.7 AU once every 6 years and 3 months (2,291 days). Its orbit is tilted by 3 degrees to the plane of the ecliptic and shows an eccentricity of 0.09.[1]

    A provisional light-curve analysis by Italian astronomer Silvano Casulli in 2010 has rendered a rotation period of 9.44±0.01 hours with a brightness amplitude of 0.14 in magnitude.[5] According to the survey carried out by the Japanese Akari satellite, and the Infrared Astronomical Satellite, IRAS, the asteroid's surface has an albedo of 0.028 and 0.035, with a corresponding diameter of 79.8 and 71.6 kilometers, respectively.[3][4]

    The minor planet was named in honor of Aristarkh Belopolsky (1854–1934), astrophysicist at Pulkovo Observatory, the principal astronomical observatory of the Russian Academy of Sciences, located south of Saint Petersburg, Russia. He is also honored by the lunar crater Belopol'skiy.[2]

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 1004 Belopolskya (1923 OS)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 2 May 2016.
    2. 1 2 3 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1004) Belopolskya. Springer Berlin Heidelberg. p. 87. ISBN 978-3-540-29925-7. Retrieved January 2016.
    3. 1 2 3 4 "LCDB Data for (1004) Belopolskya". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
    4. 1 2 3 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 January 2016.
    5. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1004) Belopolskya". Geneva Observatory. Retrieved January 2016.
    6. ↑ "1004 Belopolskya (1923 OS)". Minor Planet Center. Retrieved January 2016.
    7. ↑ "JPL Small-Body Database Search Engine: spec. type = P (Tholen)". JPL Solar System Dynamics. Retrieved 2015-06-17.

    External links


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