(318) Magdalena ( Latin: Magdalena ) is a small asteroid in the main belt , which is characterized by an unusually long period of rotation around its axis, which is about 59 hours and 30 minutes. It was discovered on September 24, 1891 by the French astronomer Auguste Charlotte at the Nice Observatory . The origin of the name is unknown.
- The orbit of the asteroid Magdalen and its position in the solar system
| (318) Magdalena | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Auguste Charlotte |
| Place of discovery | Nice |
| Discovery date | September 24, 1891 |
| Category | Main ring |
| Orbital characteristics | |
| Age of March 14, 2012 JD 2456000.5 | |
| Eccentricity ( e ) | 0,0843230 |
| Semimajor axis ( a ) | 477.579 million km (3.1924186 AU ) |
| Perihelion ( q ) | 437.308 million km (2.9232243 AU) |
| Aphelion ( Q ) | 517.85 million km (3.4616129 AU) |
| Circulation Period ( P ) | 2083.426 days (5.704 g. ) |
| Average orbital speed | 16.64 km / s |
| Inclination ( i ) | 10.64148 ° |
| Longitude node (Ω) | 161.64831 ° |
| Perihelion Argument (ω) | 298.98851 ° |
| Median Anomaly ( M ) | 240.02589 ° |
| physical characteristics | |
| Diameter | 85 km |
| Weight | 6.43⋅10 17 kg |
| Density | 2,000 g / cm³ |
| Acceleration of free fall on the surface | 0.0228 m / s² |
| 2nd space speed | 0.0449 km / s |
| Rotation period | 59.5 h |
| Apparent magnitude | 15.27 m (current) |
| Absolute magnitude | 9.4 m |
| Average surface temperature | 157 K (−116 ° C ) |
| Current distance from the sun | 2,927 a e. |
| Current distance from earth | 3.441 a. e. |
See also
- The list of asteroids ( 301-400 )
- Classifications of Minor Planets