2122 Pyatiletka

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2122 Pyatiletka
Discovery 
Synodic rotation period
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.

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

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

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

M.P.C. 5283).[10]

References

  1. ^ a b c d "JPL Small-Body Database Browser: 2122 Pyatiletka (1971 XB)" (2017-04-30 last obs.). Jet Propulsion Laboratory. Retrieved 11 June 2017.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d e f g h "LCDB Data for (2122) Pyatiletka". Asteroid Lightcurve Database (LCDB). Retrieved 27 March 2017.
  4. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  5. ^
    doi:10.1088/0004-637X/791/2/121
    . Retrieved 27 March 2017.
  6. ^
    doi:10.1088/0004-637X/741/2/90
    .
  7. ^
    doi:10.1088/0004-6256/150/3/75
    . Retrieved 27 March 2017.
  8. doi:10.1016/j.icarus.2015.08.007
    . Retrieved 27 March 2017.
  9. ^ a b "2122 Pyatiletka (1971 XB)". Minor Planet Center. Retrieved 27 March 2017.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 March 2017.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=2122_Pyatiletka&oldid=1191634259"