(642) Klara ( German Klara ) is a main belt asteroid that belongs to the spectral class S. It was opened on September 8, 1907 by the German astronomer Max Wolf at the Heidelberg Observatory and is named after the housekeeper Max Wolf [1] .
| (642) Clara | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Max wolf |
| Detection point | Heidelberg |
| Date of discovery | September 8, 1907 |
| Alternative designations | 1907 ZY ; 1949 BS |
| Category | Main ring |
| Orbital characteristics | |
| The era of May 23, 2014 JD 2456800.5 | |
| Eccentricity ( e ) | 0.121843826818 |
| Semi-axis ( a ) | 477.654 million km (3.192921909893 A. e. ) |
| Perihelion ( q ) | 419.455 million km (2,803884085661 a. E.) |
| Afhelia ( Q ) | 535.854 million km (3.581959734125 A. e.) |
| Period of circulation ( P ) | 2083,919 days (5.705 g. ) |
| Average orbital speed | 16.607 km / s |
| Inclination ( i ) | 8.168433855215 ° |
| Ascending node longitude (Ω) | 5.913961170202 ° |
| Perihelion Argument (ω) | 117,8022390638 ° |
| Mean Anomaly ( M ) | 169.2132326591 ° |
| physical characteristics | |
| Diameter | 33.36 km |
| Rotation period | 8,2308 h |
| Spectral class | S |
| Apparent magnitude | 15.64 m (current) |
| Absolute magnitude | 9.98 m |
| Albedo | 0.1617 |
| Current distance from the Sun | 3,492 a. e. |
| Current distance from Earth | 2,743 a. e. |
Orbit of the asteroid Clara and its position in the solar system
Tisserans parameter relative to Jupiter - 3.170.
See also
- List of asteroids ( 601-700 )
- Small Planet Classifications
Notes
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003. - P. 64. - ISBN 3-540-00238-3 .