(397) Vienna ( 397 Vienna ) is a small asteroid in the main belt , which belongs to the rare spectral class K. It was discovered on December 19, 1894 by the French astronomer Auguste Charlois at the Nice Observatory and is named after the city of Vienna , the capital of Austria [1] .
| (397) Vienna | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Auguste Charlotte |
| Place of discovery | Nice |
| Discovery date | December 19, 1894 |
| Eponym | Vein |
| Alternative notation | 1894 BM ; 1941 WA 1 ; 1951 AV 1 |
| Category | Main ring |
| Orbital characteristics | |
| Age of April 18, 2013 JD 2456400.5 | |
| Eccentricity ( e ) | 0.2454738 |
| Semimajor axis ( a ) | 394.432 million km (2.6366119 AU ) |
| Perihelion ( q ) | 297.609 million km (1.9893928 AU) |
| Aphelion ( Q ) | 491.254 million km (3.283831 AU) |
| Circulation Period ( P ) | 1563.751 days (4.281 g. ) |
| Average orbital speed | 18,063 km / s |
| Inclination ( i ) | 12.83162 ° |
| Longitude node (Ω) | 228.18980 ° |
| Perihelion Argument (ω) | 139.31457 ° |
| Median Anomaly ( M ) | 286.71447 ° |
| physical characteristics | |
| Diameter | 43.34 ± 1.8 km |
| Weight | 8.53⋅10 16 kg |
| Density | 2,000 g / cm³ |
| Acceleration of free fall on the surface | 0.0121 m / s² |
| 2nd space speed | 0.0229 km / s |
| Rotation period | 15.48 h |
| Spectral class | K |
| Apparent magnitude | 14.84 m (current) |
| Absolute magnitude | 9.31 m |
| Albedo | 0.1776 |
| Average surface temperature | 168 K (−105 ° C ) |
| Current distance from the sun | 2,852 a. e. |
| Current distance from earth | 3.848 a. e. |
Orbit of the asteroid Vienna and its position in the solar system
See also
- The list of asteroids ( 301-400 )
- 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. 48. - ISBN 3-540-00238-3 .