(542) Susanna ( German: Susanna ) is an asteroid of the main belt , which belongs to the spectral class S. It was discovered on August 15, 1904 by German astronomers Paul Goetz and August Kopff at the Heidelberg Observatory and is named after Goetz’s girlfriend.
| (542) Susanna | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Paul Goetz , August Kopff |
| Place of discovery | Heidelberg Observatory |
| Discovery date | August 15, 1904 |
| Eponym | discoverer girlfriend |
| Alternative notation | 1904 OQ 1 , A921 BA |
| Category | Main ring |
| Orbital characteristics | |
| Age of May 23, 2014 JD 2456800.5 | |
| Eccentricity ( e ) | 0.138247480134 |
| Semimajor axis ( a ) | 434,807 million km (2.906507562516 AU ) |
| Perihelion ( q ) | 374.696 million km (2.504690216008 AU) |
| Aphelion ( Q ) | 494.918 million km (3.308324909024 AU) |
| Circulation Period ( P ) | 1809,904 days (4,955 g. ) |
| Average orbital speed | 17.387 km / s |
| Inclination ( i ) | 12.07485349679 ° |
| Longitude node (Ω) | 153.0299072466 ° |
| Perihelion Argument (ω) | 215.3317358177 ° |
| Median Anomaly ( M ) | 39.47640190158 ° |
| physical characteristics | |
| Diameter | 41.57 km |
| Rotation period | 10,069 h |
| Spectral class | S |
| Apparent magnitude | 15.03 m (current) |
| Absolute magnitude | 9.36 m |
| Albedo | 0.1843 |
| Current distance from the sun | 2,754 a. e. |
| Current distance from earth | 3.332 a. e. |
See also
- List of asteroids ( 501-600 )
- Classifications of Minor Planets