2122 Pyatiletka

2122 Pyatiletka
Discovery [1]
Discovered byT. Smirnova
Discovery siteCrimean 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 arc63.18 yr (23,075 days)
Aphelion2.4729 AU
Perihelion2.3310 AU
2.4019 AU
Eccentricity0.0295
3.72 yr (1,360 days)
197.74°
0° 15m 53.28s / day
Inclination7.8981°
105.50°
236.47°
Physical characteristics
Dimensions10.75 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.

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]

  1. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Waszczak-2015 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference MPC-Pyatiletka was invoked but never defined (see the help page).