1671 Chaika

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1671 Chaika
Discovery [1]
Discovered by G. Neujmin
Discovery site Simeiz Obs.
Discovery date3 October 1934
Designations
(1671) Chaika
Named after
 Valentina Tereshkova [2]
(Soviet cosmonaut)
1934 TD ·1930 WE
1952 BX ·1955 XA
1963 SO ·1971 RC
A907 GM
main-belt [1] [3]  ·(middle)
background [4]  · Astraea [5]
Orbital characteristics [3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc 87.90 yr (32,107 d)
Aphelion 3.2516 AU
Perihelion 1.9223 AU
2.5870 AU
Eccentricity 0.2569
4.16 yr (1,520 d)
80.231°
0° 14m 12.84s / day
Inclination 3.9660°
177.17°
250.27°
Physical characteristics
Mean diameter
7.478±0.728  km [6]
9.37±0.46 km [7]
10.222±0.048 km [8]
13.29±1.71 km [9]
3.7718±0.0002  h [10]
0.120 [6]
0.145 [9]
0.2463 [8]
0.291 [7]
S (assumed) [11]
12.1 [1] [3] [6] [7] [8] [9] [11]

    1671 Chaika, provisional designation 1934 TD, is a background asteroid from the Astraea region in the central asteroid belt, approximately 10 kilometers (6 miles) in diameter. It was discovered on 3 October 1934, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. [1] The assumed S-type asteroid has a rotation period of 3.8 hours. [11] It was named for Soviet cosmonaut Valentina Tereshkova. [2]

    Contents

    Orbit and classification

    According to a HCM-analysis by Nesvorný, Chaika is a non-family asteroid from the main belt's background population, [4] while for Milani and Knežević, it is a member of the larger Astraea family, named after 5 Astraea. [5] The Astraea family is not recognized by Nesvorný as a collisional asteroid family, who rather considers it an artifact in the model due to a resonant alignment. [12]

    It orbits the Sun in the central asteroid belt at a distance of 1.9–3.3  AU once every 4 years and 2 months (1,520 days; semi-major axis of 2.59 AU). Its orbit has an eccentricity of 0.26 and an inclination of 4° with respect to the ecliptic. [3] The asteroid was first observed at the Lowell Observatory in April 1907. The body's observation arc begins at the Tokyo Observatory ( 389 ) in November 1930, almost 4 years prior to its official discovery observation at Simeiz–Crimea. [1]

    Naming

    This minor planet was named in honor of Soviet cosmonaut Valentina "Chaika" Tereshkova (born 1937). Tereshkova received the call sign "Chaika" – the Russian word for seagull – as she was the first woman to fly in space. [2] The asteroid's name was proposed by the Institute of Theoretical Astronomy (ITA) in St Petersburg. The official naming citation was published by the Minor Planet Center on 1 June 1967 ( M.P.C. 2740). [13]

    Physical characteristics

    Chaika is an assumed, stony S-type asteroid. [11]

    Rotation period

    In November 2005, a rotational lightcurve of Chaika was obtained from photometric observations by Italian astronomers Roberto Crippa, Federico Manzini and Josep Coloma. Lightcurve analysis gave a rotation period of 3.7718±0.0002 hours with a brightness variation of 0.18 magnitude ( U=3 ). [10] John Menke in collaboration with Walter Cooney and David Higgins determined a concurring period of 3.774±0.003 hours with an amplitude of 0.20 magnitude ( U=3 ). [14]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Chaika measures between 7.5 and 13.3 kilometers in diameter and its surface has an albedo between 0.12 and 0.29. [6] [7] [8] [9] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 11.30 kilometers based on an absolute magnitude of 12.1. [11]

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    References

    1. 1 2 3 4 5 "1671 Chaika (1934 TD)". Minor Planet Center. Retrieved 10 December 2018.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1671) Chaika". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 133. doi:10.1007/978-3-540-29925-7_1672. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 "JPL Small-Body Database Browser: 1671 Chaika (1934 TD)" (2018-10-18 last obs.). Jet Propulsion Laboratory . Retrieved 10 December 2018.
    4. 1 2 "Asteroid 1671 Chaika". Small Bodies Data Ferret. Retrieved 10 December 2018.
    5. 1 2 "Asteroid (1671) Chaika – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 10 December 2018.
    6. 1 2 3 4 Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System: EAR-A-COMPIL-5-NEOWISEDIAM-V1.0. Bibcode:2016PDSS..247.....M . Retrieved 10 December 2018.
    7. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (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.
    8. 1 2 3 4 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. (catalog)
    9. 1 2 3 4 Hasegawa, Sunao; Müller, Thomas G.; Kuroda, Daisuke; Takita, Satoshi; Usui, Fumihiko (April 2013). "The Asteroid Catalog Using AKARI IRC Slow-Scan Observations". Publications of the Astronomical Society of Japan. 65 (2): 11. arXiv: 1210.7557 . Bibcode:2013PASJ...65...34H. doi:10.1093/pasj/65.2.34.
    10. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1671) Chaika". Geneva Observatory. Retrieved 10 December 2018.
    11. 1 2 3 4 5 "LCDB Data for (1671) Chaika". Asteroid Lightcurve Database (LCDB). Retrieved 10 December 2018.
    12. ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628 . Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN   9780816532131.
    13. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.
    14. ↑ Menke, John; Cooney, Walt; Gross, John; Terrell, Dirk; Higgins, David (October 2008). "Asteroid Lightcurve Analysis at Menke Observatory". The Minor Planet Bulletin. 35 (4): 155–160. Bibcode:2008MPBu...35..155M. ISSN   1052-8091.
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