2122 Pyatiletka

Pyatiletka

Discovery
Discovered by	T. M. Smirnova
Discovery site	Crimean Astrophysical Observatory
Discovery date	14 December 1971
Designations
MPC designation	2122
Alternative names	1971 XB
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	61.95 yr (22626 days)
Aphelion	2.4735229 AU (370.03376 Gm)
Perihelion	2.3299747 AU (348.55925 Gm)
Semi-major axis	2.401749 AU (359.2965 Gm)
Eccentricity	0.0298841
Orbital period	3.72 yr (1359.5 d)
Mean anomaly	38.41861°
Mean motion	0° 15^m 53.268^s / day
Inclination	7.898435°
Longitude of ascending node	105.51175°
Argument of perihelion	236.86700°
Earth MOID	1.32571 AU (198.323 Gm)
Jupiter MOID	2.63934 AU (394.840 Gm)
Jupiter Tisserand parameter	3.512
Physical characteristics
Rotation period	8.8993 h (0.37080 d)
Absolute magnitude (H)	12.0

2122 Pyatiletka (1971 XB) is a main-belt asteroid discovered on December 14, 1971, by T. M. Smirnova at the Crimean Astrophysical Observatory. It is named in honor of Five-Year Plans of the USSR.^[2]

References

1. "2122 Pyatiletka (1971 XB)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 15 April 2016.
2. Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names (5th ed.). New York: Springer Verlag. p. 172. ISBN 3-540-00238-3.

External links

• 2122 Pyatiletka at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters