1074 Beljawskya

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1074 Beljawskya
Discovery [1]
Discovered by S. Belyavskyj
Discovery site Simeiz Obs.
Discovery date 26 January 1925
MPC designation (1074) Beljawskya
Named after
Sergey Belyavsky
(discoverer himself)[2]
1925 BE · 1949 KC1
A912 VN · A914 BB
A917 QB · A923 TA
main-belt · Themis[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 91.32 yr (33,353 days)
Aphelion 3.7138 AU
Perihelion 2.5863 AU
3.1501 AU
Eccentricity 0.1790
5.59 yr (2,042 days)
0° 10m 34.68s / day
Inclination 0.8006°
Physical characteristics
Dimensions 39.91±11.13 km[4]
47.70 km (derived)[3]
47.82±2.2 km (IRAS:11)[5]
49.189±0.666 km[6]
52.28±0.96 km[7]
54.368±0.813 km[8]
6.284±0.002 h[9]
6.285±0.0035 h[10]
0.0646 (derived)[3]
0.0772±0.007 (IRAS:11)[5]
S (assumed)[3]
10.0[5][7][8] · 10.046±0.004 (R)[10] · 10.10[4] · 10.2[1][3] · 10.21±0.15[11]

1074 Beljawskya, provisional designation 1925 BE, is a Themistian asteroid from the outer region of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 26 January 1925, by Soviet–Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula.[12] It was named in honor of its discoverer.[2]


Beljawskya is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits.[3] It orbits the Sun at a distance of 2.6–3.7 AU once every 5 years and 7 months (2,042 days). Its orbit has an eccentricity of 0.18 and an inclination of 1° with respect to the ecliptic.[1] It was first identified as A912 VN at Winchester Observatory (799) in 1912. The body's observation arc begins with its identification as A923 TA at Simeiz in 1923, almost two years prior to its official discovery observation.[12]

In October 2007, a rotational lightcurve of Beljawskya was obtained by French amateur astronomer Pierre Antonini. It gave a well-defined rotation period of 6.284 hours with a brightness variation of 0.37 magnitude (U=3).[9] Photometric observations in the R-band at the U.S. Palomar Transient Factory in September 2013, gave a concurring period of 6.285 hours with an amplitude of 0.32 magnitude (U=2).[10]

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Beljawskya measures between 39.91 and 52.28 kilometers in diameter, and its surface has an albedo of 0.066 and 0.08 (without preliminary results).[4][5][6][7] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0646 and a diameter of 47.70 kilometers using an absolute magnitude of 10.2.[3] CALL also classifies the dark Themistian asteroid as a S-type rather than a C-type body.[3]

Proposed by staff members of the discovering Simeis Observatory, this minor planet was named in honor of its discoverer Sergey Ivanovich Belyavsky (1883–1953). He also discovered the hyperbolic comet C/1911 S3 that was visible to the naked eye. Between 1912 and 1927, he has discovered 36 numbered minor planets.[2] Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 102).[2]


  1. ^ a b c d "JPL Small-Body Database Browser: 1074 Beljawskya (1925 BE)" (2016-06-13 last obs.). Jet Propulsion Laboratory. Retrieved 7 February 2017. 
  2. ^ a b c d Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1074) Beljawskya. Springer Berlin Heidelberg. p. 92. ISBN 978-3-540-00238-3. Retrieved 7 February 2017. 
  3. ^ a b c d e f g h "LCDB Data for (1074) Beljawskya". Asteroid Lightcurve Database (LCDB). Retrieved 7 February 2017. 
  4. ^ a b c d Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522Freely accessible. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 7 February 2017. 
  5. ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 7 February 2017. 
  6. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 7 February 2017. 
  7. ^ a b c d 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" (PDF). Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 7 February 2017. 
  8. ^ a b c Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 7 February 2017. 
  9. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1074) Beljawskya". Geneva Observatory. Retrieved 7 February 2017. 
  10. ^ a b c 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 7 February 2017. 
  11. ^ 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 7 February 2017. 
  12. ^ a b "1074 Beljawskya (1925 BE)". Minor Planet Center. Retrieved 7 February 2017. 

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