789 Lena

789 Lena

Name
Name Lena
Designation 1914 UU; 1970 CE
Discovery
Discoverer G. N. Neujmin
Discovery date June 24, 1914
Discovery site Simeis
Orbital elements
Epoch August 18, 2005 (JDCT 2453600.5)
Eccentricity (e) 0.148
Semimajor axis (a) 2.684 AU
Perihelion (q) 2.288 AU
Aphelion (Q) 3.081 AU
Orbital period (P) 4.398 a
Inclination (i) 10.803°
Longitude of the ascending node (Ω) 232.837°
Argument of Perihelion (ω) 42.261°
Mean anomaly (M) 251.456°

789 Lena is a medium-sized X-type asteroid orbiting in the Main belt near the Eunomia family. However, true family members have an S-type composition, so it is almost certainly an unrelated interloper. Lena has an unusual lightcurve[1], which indicates that it is either a very slow rotator (with period well over 22 hours), very irregular shaped, or both.

References

  1. ^ R. Gil-Hutton Research note: photometry of asteroids 359 Georgia and 789 Lena, Revista Mexicana de Astronomía y Astrofísica, Vol. 31, p. 143, (1995)

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