(270) Anahita ( lat.Anahita ) - one of the typical asteroids of the main belt , which belongs to the bright spectral class S.
| (270) Anahita | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | C. G. F. Peters |
| Place of discovery | Clinton |
| Discovery date | October 8, 1887 |
| Eponym | Anahita |
| Alternative notation | 1926 VG |
| Category | Main ring |
| Orbital characteristics | |
| Age of March 14, 2012 JD 2456000.5 | |
| Eccentricity ( e ) | 0,15068 |
| Semimajor axis ( a ) | 328.936 million km (2.19880 AU ) |
| Perihelion ( q ) | 279.372 million km (1.86748 AU) |
| Aphelion ( Q ) | 378.5 million km (2.53012 AU) |
| Circulation Period ( P ) | 1190.905 days (3.261 g. ) |
| Average orbital speed | 19.972 km / s |
| Inclination ( i ) | 2,366 ° |
| Longitude node (Ω) | 254.504 ° |
| Perihelion Argument (ω) | 80.547 ° |
| Median Anomaly ( M ) | 34,808 ° |
| physical characteristics | |
| Diameter | 50.78 km |
| Weight | 1.37⋅10 17 kg |
| Density | 2,000 g / cm³ |
| Acceleration of free fall on the surface | 0.0142 m / s² |
| 2nd space speed | 0.0268 km / s |
| Rotation period | 15.06 h |
| Spectral class | S |
| Apparent magnitude | 13.84 m (current) |
| Absolute magnitude | 8.75 m |
| Albedo | 0.2166 |
| Average surface temperature | 181 K (−92 ° C ) |
| Current distance from the sun | 2.45 a. e. |
| Current distance from earth | 3,413 a. e. |
Content
Discovery History
The asteroid was discovered on October 8, 1887 by German-American astronomer C.G. F. Peters at the Litchfield Observatory , located near the city of Clinton, New York , USA and named after Anahita , the goddess of water and fertility in Iranian mythology [1] .
Orbital characteristics
This asteroid is located in the inner part of the main belt at a distance of 2.19 a. e. from the sun . Since it moves in an almost circular orbit with a low eccentricity close to 0.150, its distance from the Sun varies rather weakly, from about 318.020 million km perihelion to 379.866 million km aphelion .
An asteroid makes one revolution around the Sun in about 1190.9 days, which is just over 3.2 years.
Physical Characteristics
The diameter of the asteroid is relatively small, only 50.78 km. Its surface is very light, with an albedo of 0.2166, which indicates its belonging to class S silicate asteroids. Due to its small size and relatively small reflectivity, the absolute magnitude of the asteroid is only 8.75 m , and its apparent magnitude is even smaller.
The rotation period around its axis is a little more than 15 hours and 4 minutes.
See also
- The list of asteroids ( 201-300 )
- 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. 39. - ISBN 3-540-00238-3 .