(266051) Hannawieser
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Asteroid (266051) Hannawieser |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Euphrosyne family |
| Major semi-axis | 3.166 AU |
| eccentricity | 0.217 |
| Perihelion - aphelion | 2.479 AU - 3.853 AU |
| Inclination of the orbit plane | 26.089 ° |
| Sidereal period | 5 a 230 d |
| Mean orbital velocity | 20 km / s |
| Physical Properties | |
| Medium diameter | 5,175 km |
| Albedo | 0.029 |
| Rotation period | ? |
| Absolute brightness | 15.8 mag |
| Spectral class | ? |
| history | |
| Explorer | Markus Griesser |
| Date of discovery | July 1, 2006 |
| Another name | 2006 NB |
| 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. | |
(266051) Hannawieser is a main belt asteroid over five kilometers in size , which was discovered on July 1, 2006 by Markus Griesser , the longtime director of the Winterthur Eschenberg observatory . It belongs to the Euphrosyne family in the outer asteroid belt. This group is named after the asteroid (31) Euphrosyne (German: Frohsinn), discovered in Washington, DC in 1854 , named after one of the three graces in ancient Greek mythology. She is a daughter of Zeus .
On July 15, 2011, the asteroid was named after the Winterthur musician Hanna Wieser by the discoverer with the official approval of the International Astronomical Union (IAU) after the numbering by the Minor Planet Center . She has been a member of the traditional orchestra of the Musikkollegium Winterthur (founded in 1629) for almost 40 years , led the Oberwinterthur Church Orchestra with great success from 1998 to the end of 2018 and has also been a valued violin teacher for many years.
The space telescope WISE Wide-Field Infrared Survey Explorer , launched by NASA in 2010 , which continues to search for asteroids under the name NEOWISE after an interruption in 2011/12, measured a surprisingly deep albedo on the minor planet "Hannawieser". So it must be a very dark celestial body that, despite its stately size of over five kilometers, reflects extremely little sunlight.
Individual evidence
- ↑ a b Measurement by NEOWISE 2011: bibcode : 2011ApJ ... 741 ... 68M