2122 Pyatiletka

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2122 Pyatiletka
Discovery  [1]
Discovered by T. Smirnova
Discovery site Crimean Astrophysical Obs.
Discovery date14 December 1971
Designations
(2122) Pyatiletka
Named after
Pyatiletka
(Five-year plans of the USSR) [2]
1971 XB ·1950 BE1
1950 DX ·1951 KB1
1954 DA ·1961 AL
1969 EV1
main-belt  ·(inner)  [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 63.18 yr (23,075 days)
Aphelion 2.4729 AU
Perihelion 2.3310 AU
2.4019 AU
Eccentricity 0.0295
3.72 yr (1,360 days)
197.74°
0° 15m 53.28s / day
Inclination 7.8981°
105.50°
236.47°
Physical characteristics
Dimensions 10.75 km (calculated) [3]
11.00±0.83 km [4]
11.084±0.101 km [5]
11.554±0.074 km [6]
8.899±0.0053 h [7]
0.1931±0.0198 [6]
0.20 (assumed) [3]
0.211±0.033 [4]
0.224±0.023 [5]
S   [3]
11.759±0.002(R) [7]  ·12.1 [1] [4] [6]  ·12.21 [3]  ·12.40±0.29 [8]

    2122 Pyatiletka, provisional designation 1971 XB, is a stony asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter.

    Contents

    The asteroid was discovered on 14 December 1971 by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. [9] It was named for "pyatiletka", the first Five-Year Plan of the USSR. [2]

    Orbit and classification

    Pyatiletka orbits the Sun in the inner main-belt at a distance of 2.3–2.5  AU once every 3 years and 9 months (1,360 days). Its orbit has an eccentricity of 0.03 and an inclination of 8° with respect to the ecliptic. [1]

    It was first identified as 1950 BE1 at Simeiz Observatory in 1950. The body's observation arc begins at Lowell Observatory in 1961, when it was identified as 1961 AL, 10 years prior to its official discovery observation at Nauchnyj. [9]

    Physical characteristics

    Pyatiletka has been characterized as a stony S-type asteroid. [3]

    Lightcurves

    A fragmentary rotational lightcurve of Pyatiletka was obtained from photometric observations at the Palomar Transient Factory in California in February 2010. Lightcurve analysis gave a tentative rotation period of 8.899 hours with a brightness variation of 0.10 magnitude ( U=1 ). [7] As of 2017, no other lightcurve has been published. [3]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Pyatiletka measures between 11.00 and 11.55 kilometers in diameter, and its surface has an albedo between 0.1931 and 0.224. [4] [5] [6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 10.75 kilometers with an absolute magnitude of 12.21. [3]

    Naming

    This minor planet was named in honor of the five-year plans of the Soviet Union on the occasion of the 50th anniversary of its first adoption. [2] The official naming citation was published by the Minor Planet Center on 1 April 1980 ( M.P.C. 5283). [10]

    Related Research Articles

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    <span class="mw-page-title-main">1132 Hollandia</span> Asteroid

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    <span class="mw-page-title-main">1957 Angara</span>

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    <span class="mw-page-title-main">2094 Magnitka</span> Flora asteroid from the inner regions of the asteroid belt

    2094 Magnitka (prov. designation: 1971 TC2) is a Flora asteroid from the inner regions of the asteroid belt, approximately 12 kilometers (7.5 miles) in diameter. It was discovered on 12 October 1971, at and by the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The discovery has not been attributed to an observing astronomer. It was later named for the city of Magnitogorsk.

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    1907 Rudneva, provisional designation 1972 RC2, is a stony background asteroid from the central regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 11 September 1972, by astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula. The asteroid was named after Soviet geodesist and war hero Yevgeniya Rudneva.

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    <span class="mw-page-title-main">1186 Turnera</span> Eoan asteroid

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    <span class="mw-page-title-main">2120 Tyumenia</span> Dark background asteroid

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    <span class="mw-page-title-main">1336 Zeelandia</span> Stony Koronian asteroid

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    1296 Andrée, provisional designation 1933 WE, is a stony Nysian asteroid from the inner regions of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the North African Algiers Observatory, Algeria, and named after the discoverer's niece.

    <span class="mw-page-title-main">1339 Désagneauxa</span> Stony Eoan asteroid

    1339 Désagneauxa, provisional designation 1934 XB, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 4 December 1934, by French astronomer Louis Boyer at the North African Algiers Observatory in Algeria. A few nights later, the asteroid was independently discovered by astronomers Grigory Neujmin and Eugène Delporte, at the Crimean Simeiz and Belgian Uccle Observatory, respectively. It was later named after discoverer's brother-in-law.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 2122 Pyatiletka (1971 XB)" (2017-04-30 last obs.). Jet Propulsion Laboratory . Retrieved 11 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(2122) Pyatiletka". Dictionary of Minor Planet Names – (2122) Pyatiletka. Springer Berlin Heidelberg. p. 172. doi:10.1007/978-3-540-29925-7_2123. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 8 "LCDB Data for (2122) Pyatiletka". Asteroid Lightcurve Database (LCDB). Retrieved 27 March 2017.
    4. 1 2 3 4 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 . (online, AcuA catalog p. 153)
    5. 1 2 3 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 27 March 2017.
    6. 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.
    7. 1 2 3 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: 1504.04041 . Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75 . Retrieved 27 March 2017.
    8. ↑ 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: 1506.00762 . Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007 . Retrieved 27 March 2017.
    9. 1 2 "2122 Pyatiletka (1971 XB)". Minor Planet Center. Retrieved 27 March 2017.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 March 2017.


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