930 Westfalia (930 Westphalia) - the asteroid of the main asteroid belt . Discovered on March 10, 1920 by the German astronomer Walter Baade at the Hamburg Observatory ( Bergedorf , Germany ). The asteroid is named after the historical region in northwest Germany , the birthplace of the scientist.
| 930 Westfalia | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Walter Baade |
| Detection point | |
| Date of discovery | March 10, 1920 |
| Alternative designations | 1920 GS A916 DD |
| Category | Main ring |
| Orbital characteristics | |
| The era of November 30, 2008 | |
| Eccentricity ( e ) | 0.143 |
| Semi-axis ( a ) | 363.672 million km (2,431 a. E.) |
| Perihelion ( q ) | 311.667 million km (2.083 a. E.) |
| Afhelia ( Q ) | 415.678 million km (2,779 a. E.) |
| Period of circulation ( P ) | 1384,446 days (3.79 g ) |
| Average orbital speed | 19.005 km / s |
| Inclination ( i ) | 15.319 ° |
| Ascending node longitude (Ω) | 341.108 ° |
| Perihelion Argument (ω) | 329.420 ° |
| Mean Anomaly ( M ) | 21.129 ° |
| physical characteristics | |
| Diameter | 36.48 km |
| Weight | ? kg |
| Density | ? g / cm³ |
| Acceleration of gravity on the surface | ? m / s² |
| 2nd cosmic speed | ? km / s |
| Rotation period | ? h |
| Spectral class | C |
| Absolute magnitude | 11.40 m |
| Albedo | 0.0366 |
Westfalia does not cross the Earth 's orbit , and makes a complete revolution around the Sun in 3.79 Julian years .
The orbit of the asteroid Westphalia, and its position in the solar system on 01/01/2009. NASA JPL Picture Small Body Orbit Viewer applet
See also
- List of asteroids ( 901-1000 )
- Small Planet Classifications