1900 Katyusha

1900 Katyusha (prov. designation: 1971 YB) is a stony background asteroid from the inner asteroid 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 credited with conducting an aerial ramming.[2]

1900 Katyusha
Modelled shape of Katyusha from its lightcurve
Discovery[1]
Discovered byT. Smirnova
Discovery siteCrimean Astrophysical Obs.
Discovery date16 December 1971
Designations
(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 arc63.59 yr (23,226 days)
Aphelion2.5075 AU
Perihelion1.9116 AU
2.2096 AU
Eccentricity0.1348
3.28 yr (1,200 days)
354.20°
0° 18m 0.36s / day
Inclination6.5426°
281.91°
142.40°
Physical characteristics
Mean diameter
8.820±0.097 km[4]
9 km[5][6]
9.4999 h (0.39583 d)[1]
0.29[5][6]
0.299±0.037[4]
S[3]
12.2[1]

    Orbit and classification

    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]

    Naming

    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]

    Physical characteristics

    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]

    References
    1. "JPL Small-Body Database Browser: 1900 Katyusha (1971 YB)" (2016-11-15 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 14 June 2017.
    2. Schmadel, Lutz D. (2003). "(1900) Katyusha". Dictionary of Minor Planet Names – (1900) Katyusha. Springer Berlin Heidelberg. p. 152. doi:10.1007/978-3-540-29925-7_1901. ISBN 978-3-540-29925-7.
    3. "LCDB Data for (1900) Katyusha". Asteroid Lightcurve Database (LCDB). Retrieved 23 August 2016.
    4. 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:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 14 June 2017.
    5. 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:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 23 August 2016.
    6. 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:1109.6407. 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" (PDF). Minor Planet Bulletin. 35 (3): 105–107. Bibcode:2008MPBu...35..105S. ISSN 1052-8091. Retrieved 17 March 2020.
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