1149 Volga

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
1149 Volga
Discovery [1]
Discovered by E. Skvortsov
Discovery site Simeiz Obs.
Discovery date 1 August 1929
MPC designation (1149) Volga
Named after
Volga River[2]
(Russian river)
1929 PF
main-belt · (outer)[3]
background [4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 87.92 yr (32,114 days)
Aphelion 3.1733 AU
Perihelion 2.6228 AU
2.8981 AU
Eccentricity 0.0950
4.93 yr (1,802 days)
0° 11m 59.28s / day
Inclination 11.750°
Physical characteristics
Dimensions 48.50±13.27 km[5]
52.377±0.365 km[6]
53.86±18.96 km[7]
55.57±1.8 km[3][8]
56.020±1.123 km[9]
57.67±0.77 km[10]
27.5 h[11]
P[9] · C[3][12]
B–V = 0.690[1]
U–B = 0.250[1]
10.44±0.44[12] · 10.57[1][3][5][8][9][10][11] · 10.69[7]

1149 Volga, provisional designation 1929 PF, is a dark background asteroid from the outer regions of the asteroid belt, approximately 55 kilometers in diameter. It was discovered on 1 August 1929, by Soviet astronomer Evgenij Skvorcov (a.k.a. Skvortsov) at the Simeiz Observatory on the Crimean peninsula.[13] The asteroid was named after the Volga River.[2]

Orbit and classification[edit]

Volga is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the outer asteroid belt at a distance of 2.6–3.2 AU once every 4 years and 11 months (1,802 days; semi-major axis 2.90 AU). Its orbit has an eccentricity of 0.10 and an inclination of 12° with respect to the ecliptic.[1] The body's observation arc begins at Simeiz Observatory on 5 August 1929, four nights after its official discovery observation.[13]

Physical characteristics[edit]

The Wide-field Infrared Survey Explorer (WISE) characterized Volga as a primitive P-type asteroid,[9] while Pan-STARRS photometric survey found it to be a carbonaceous C-type asteroid.[3][12]

Rotation period[edit]

In October 1984, a rotational lightcurve of Volga was obtained from photometric observations by American astronomer Richard Binzel. Lightcurve analysis gave a somewhat longer-than average rotation period of 27.5 hours with a brightness amplitude of 0.26 magnitude (U=2).[11]

Diameter and albedo[edit]

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, Volga measures between 48.50 and 57.67 kilometers in diameter and its surface has an albedo between 0.03 and 0.04.[5][6][7][8][9][10]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0338 and a diameter of 55.57 kilometers based on an absolute magnitude of 10.57.[3][8]


This minor planet was named after the Volga River, the largest river in Europe and one of the principal ones of Russia. Its name was suggested by the Institute of Theoretical Astronomy in St. Petersburg.[2] The official naming citation was published by the Minor Planet Center before November 1977 (M.P.C. 2740).[14]


  1. ^ a b c d e f "JPL Small-Body Database Browser: 1149 Volga (1929 PF)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Retrieved 5 December 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1149) Volga. Springer Berlin Heidelberg. p. 97. ISBN 978-3-540-00238-3. Retrieved 5 December 2017. 
  3. ^ a b c d e f g "LCDB Data for (1149) Volga". Asteroid Lightcurve Database (LCDB). Retrieved 5 December 2017. 
  4. ^ a b "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 5 December 2017. 
  5. ^ 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 5 December 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" (PDF). The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 5 December 2017. 
  7. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923Freely accessible. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 5 December 2017. 
  8. ^ a b c d e 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. Archived from the original on 2016-06-03. Retrieved 5 December 2017. 
  9. ^ a b c d e f 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 5 December 2017. 
  10. ^ 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". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 5 December 2017. 
  11. ^ a b c Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus: 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 5 December 2017. 
  12. ^ a b c 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 5 December 2017. 
  13. ^ a b "1149 Volga (1929 PF)". Minor Planet Center. Retrieved 5 December 2017. 
  14. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 December 2017. 

External links[edit]