(113390) Helvetia
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Asteroid (113390) Helvetia |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.3028 AU |
| eccentricity | 0.2026 |
| Perihelion - aphelion | 1.8363 AU - 2.7693 AU |
| Inclination of the orbit plane | 7.36 ° |
| Sidereal period | 3,495 a |
| Mean orbital velocity | 19.63 km / s |
| Physical Properties | |
| Medium diameter | 2,196 km |
| Albedo | 0.231 |
| Rotation period | ? H |
| Absolute brightness | 15,375 likes |
| Spectral class | ? |
| history | |
| Explorer | Markus Griesser |
| Date of discovery | September 29, 2002 |
| Another name | 2002 SU 19 , 2001 FS 166 |
| 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. | |
Helvetia is the asteroid with the number 113390. It was discovered on September 29, 2002 by the Swiss astronomer Markus Griesser , head of the Eschenberg observatory in Winterthur, and has officially been named this since February 2006.
Data
The minor planet has a diameter of around two kilometers and orbits the sun at an average distance of 344 million kilometers. It takes three and a half years to circle it.
Meaning of the name
The name chosen by the discoverer and approved by an international committee pays tribute to the four different cultures of Switzerland and their ability to coexist peacefully.
Helvetia is the neo-Latin name for Switzerland derived from the Helvetii tribe and an allegorical female figure that symbolizes Switzerland.
To this day, “Helvetia” is used as a country name on postage stamps and coins, because none of the four official languages (German, French, Italian, Romansh) of Switzerland is preferred. For the same reason, the Latin country code CH was chosen, the abbreviation for Confoederatio Helvetica, Swiss Confederation .
Special postage stamp
On the occasion of the international year of astronomy, Swiss Post issued a special postage stamp on May 8, 2009. This so-called European stamp with a face value of 1 franc shows the asteroid Helvetia. The discoverer Markus Griesser designed this brand together with the designer Catherine Reber. The stamp, glowing in the dark, shows the orbit of the asteroid in our solar system.
See also
Web links
Individual evidence
- ↑ a b Measurement by NEOWISE 2011, bibcode : 2011ApJ ... 741 ... 68M