639 Latona
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| Discovery | |
|---|---|
| Discovered by | K. Lohnert |
| Discovery site | Heidelberg |
| Discovery date | July 19, 1907 |
| Designations | |
| Alternative names | 1907 ZT |
| Orbital characteristics[1] | |
| Epoch August 18, 2005 (JDCT 2453600.5) | |
| Aphelion | 3.332 AU |
| Perihelion | 2.712 AU |
| Semi-major axis | 3.022 AU |
| Eccentricity | 0.103 |
| Orbital period | 6.22 a |
| Mean anomaly | 226.457° |
| Inclination | 8.562° |
| Longitude of ascending node | 280.218° |
| Argument of perihelion | 66.502° |
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639 Latona is a minor planet orbiting the Sun that was discovered by German astronomer Karl Julius Lohnert on July 19, 1907 at Heidelberg.
Photometric observations of this asteroid at Palmer Divide Observatory in Colorado Springs, Colorado during 2007 gave a light curve with a period of 6.139 ± 0.002 hours and a brightness variation of 0.08 ± 0.01 in magnitude. This confirms period measurements of about 6.2 hours reported in 1987 and 2001.[2]
This is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.[3]
References
- ↑ Yeomans, Donald K., "639 Latona", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- ↑ Warner, Brian D. (June 2008), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 35 (2): 56–60, Bibcode:2008MPBu...35...56W.
- ↑ Veeder, G. J. et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry", Icarus 114: 186–196, Bibcode:1995Icar..114..186V, doi:10.1006/icar.1995.1053, retrieved 2013-04-06.
External links
- Discovery Circumstances: Numbered Minor Planets
- NASA's Jet Propulsion Laboratory Datasite page on this space object
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