789 Lena

From Wikipedia, the free encyclopedia

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.

[edit] References

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

[edit] External links

Discovery Circumstances: Numbered Minor Planets

This article about an asteroid native to the Main Belt is a stub. You can help Wikipedia by expanding it.

v • d • e Minor planets navigator

788 Hohensteina · 789 Lena · 790 Pretoria

v • d • e Small Solar System bodies

Asteroids (Vulcanoids · Near-Earth · Main belt · Jupiter Trojans · Centaurs · Damocloids · Neptune Trojans · Groups · Families · Moons) Comets · Trans-Neptunians (Kuiper belt · Scattered disc objects · Oort cloud) · Minor planets · Meteoroids

Lists: Minor planets · Asteroid groups and families · Binary asteroids · Asteroid moons See also: Near-Earth object · Dwarf planet · Planet · Solar System · Pronunciation of asteroid names · Meanings of asteroid names.