(418) Alemannia ( German: Alemannia ) - an asteroid of the main belt , which belongs to the spectral class M. It was discovered on September 7, 1896 by the German astronomer Max Wolf at the Heidelberg Observatory and named after the student fraternity at the University of Heidelberg [1] .
| (418) Alemannia | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Max Wolf |
| Place of discovery | Heidelberg |
| Discovery date | September 7, 1896 |
| Alternative notation | 1896 CV |
| Category | Main ring |
| Orbital characteristics | |
| Age of November 4, 2013 JD 2456600.5 | |
| Eccentricity ( e ) | 0.1175527 |
| Semimajor axis ( a ) | 387.869 million km (2.5927415 AU ) |
| Perihelion ( q ) | 342.274 million km (2,2879577 A.E.) |
| Aphelion ( Q ) | 433.464 million km (2.8975253 AU) |
| Circulation Period ( P ) | 1524.886 days (4.175 g. ) |
| Average orbital speed | 18,433 km / s |
| Inclination ( i ) | 6.81969 ° |
| Longitude node (Ω) | 248,99567 ° |
| Perihelion Argument (ω) | 126.09137 ° |
| Median Anomaly ( M ) | 357.16687 ° |
| physical characteristics | |
| Diameter | 34.1 km |
| Weight | 4,15⋅10 16 kg |
| Density | 2,000 g / cm³ |
| Acceleration of free fall on the surface | 0,0095 m / s² |
| 2nd space speed | 0.0180 km / s |
| Rotation period | 4,671 h |
| Spectral class | M |
| Apparent magnitude | 15.41 m (current) |
| Absolute magnitude | 9.77 m |
| Albedo | 0.1878 |
| Average surface temperature | 168 K (−105 ° C ) |
| Current distance from the sun | 2,858 a. e. |
| Current distance from earth | 3,799 a. e. |
The orbit of the asteroid Alemannia and its position in the solar system
See also
- List of asteroids ( 401-500 )
- Classifications of Minor Planets
Notes
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003 .-- P. 49. - ISBN 3-540-00238-3 .