1900 Katyusha

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1900 Katyusha
Discovery [1]
Discovered by T. Smirnova
Discovery site Crimean Astrophysical Obs.
Discovery date 16 December 1971
MPC designation (1900) Katyusha
Named after
Yekaterina Zelenko
(Soviet war pilot)[2]
1971 YB · 1938 WM
1941 SS1 · 1950 LS
1953 GL1 · 1961 WD
1969 DC
main-belt · Flora family[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 63.59 yr (23,226 days)
Aphelion 2.5075 AU
Perihelion 1.9116 AU
2.2096 AU
Eccentricity 0.1348
3.28 yr (1,200 days)
0° 18m 0.36s / day
Inclination 6.5426°
Physical characteristics
Dimensions 8.820±0.097 km[4]
9 km[5][6]
9.4999 h (0.39583 d)[1]

1900 Katyusha, provisional designation 1971 YB, is a stony asteroid from the inner main-belt, approximately 9 kilometers in diameter. It was discovered on 16 December 1971, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula[7] and named in honor of Yekaterina Zelenko, the only woman to have ever performed an aerial ramming.[2]

Orbit and characterization[edit]

Katyusha is a member of the Flora family, one of the largest groups of stony asteroids in the inner main-belt.[3] It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,200 days). Its orbit has an eccentricity of 0.13 and an inclination of 7° with respect to the ecliptic.[1]

Physical characteristics[edit]

It rotates around its axis with a period of 9.4999 hours and with a brightness variation of 0.72 magnitude, indicating a non-spheroidal shape.[8]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Katyusha measures between 8.820 and 9 kilometers in diameter and its surface has an albedo between 0.29 and 0.299.[4][5][6] Katyusha has been characterized as a S-type asteroid.[3]


This minor planet was named in honor of Ukrainian Yekaterina Zelenko (1916–1941), a war pilot and Hero of the Soviet Union, known for being the only woman who had ever executed an aerial ramming. The asteroid's name "Katyusha" is a petname for Ekaterina.[2]


  1. ^ a b c d e "JPL Small-Body Database Browser: 1900 Katyusha (1971 YB)" (2016-11-15 last obs.). Jet Propulsion Laboratory. Retrieved 14 June 2017. 
  2. ^ a b c Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1900) Katyusha. Springer Berlin Heidelberg. p. 152. ISBN 978-3-540-29925-7. Retrieved 23 August 2016. 
  3. ^ a b c d "LCDB Data for (1900) Katyusha". Asteroid Lightcurve Database (LCDB). Retrieved 23 August 2016. 
  4. ^ 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 14 June 2017. 
  5. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 23 August 2016. 
  6. ^ 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". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 23 August 2016. 
  7. ^ "1900 Katyusha (1971 YB)". Minor Planet Center. Retrieved 23 August 2016. 
  8. ^ Sada, Pedro V. (September 2008). "CCD Photometry of Six Asteroids from the Universidad de Monterry Observatory". The Minor Planet Bulletin. 35 (3): 105–107. Bibcode:2008MPBu...35..105S. ISSN 1052-8091. Retrieved 23 August 2016. 

External links[edit]