(801) Helwerthia
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Asteroid (801) Helwerthia |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Eunomia family |
| Major semi-axis | 2.6059 AU |
| eccentricity | 0.0761 |
| Perihelion - aphelion | 2.4077 AU - 2.8041 AU |
| Inclination of the orbit plane | 14.1 ° |
| Sidereal period | 4,207 a |
| Mean orbital velocity | 18.45 km / s |
| Physical Properties | |
| Medium diameter | 33.22 km |
| Albedo | 0.038 |
| Rotation period | 23.938 h |
| Absolute brightness | 11,454 mag |
| Spectral class | ? |
| history | |
| Explorer | Max Wolf |
| Date of discovery | 1915 |
| Another name | 1915 WQ, 1925 RG, 1970 GS 1 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(801) Helwerthia is an asteroid of the main belt , which was discovered on March 20, 1915 by the German astronomer Max Wolf in Heidelberg . The asteroid is named after Elise Helwerth Wolf , the mother of the discoverer.
The diameter of (801) Helwerthia is 33 kilometers. It has a rotation period of 23 h 56 m 17 s , so a day on Helwerthia is almost exactly the same length as on our earth (24 h). It takes this asteroid 4.2 years or more than 1500 days to make one orbit around the sun .
See also
Web links
- Light curve from (801) Helwerthia on the Minor Planet Lightcurve Data page of the Astronomical Society of Las Cruces (accessed May 27, 2012).
