(2102) Tantalum ( dr. Greek Τάνταλος ) is a near - Earth asteroid from the Apollon group, which belongs to the rare spectral class Q and is characterized by a rather elongated orbit, because of which, during its movement around the Sun, it intersects not only the Earth ’s orbit, but and Mars . But the main feature of this asteroid is the extremely large inclination of the orbit to the ecliptic plane (over 64 degrees), which is a kind of record among all asteroids that have their own names.
- The orbit of the asteroid Tantalum and its position in the solar system
| (2102) Tantalum | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Charles Koval |
| Place of discovery | Palomar |
| Discovery date | December 27, 1975 |
| Eponym | Tantalum |
| Alternative notation | 1975 ya |
| Category | NEA ( Apollo ) |
| Orbital characteristics | |
| Age of September 30, 2012 JD 2456200.5 | |
| Eccentricity ( e ) | 0.2989852 |
| Semimajor axis ( a ) | 192.98 million km (1.2899899 AU ) |
| Perihelion ( q ) | 135.282 million km (0.904302 AU) |
| Aphelion ( Q ) | 250.678 million km (1,6756778 AU) |
| Circulation Period ( P ) | 535.153 days (1.465 g ) |
| Average orbital speed | 25.627 km / s |
| Inclination ( i ) | 64.00759 ° |
| Longitude node (Ω) | 94.37296 ° |
| Perihelion Argument (ω) | 61.55491 ° |
| Median Anomaly ( M ) | 358.57477 ° |
| physical characteristics | |
| Diameter | 2 - 3 km |
| Rotation period | 2,391 h |
| Spectral class | Q |
| Apparent magnitude | 19.67 m (current) |
| Absolute magnitude | 16,2 m |
| Current distance from the sun | 1,505 a. e. |
| Current distance from earth | 1.65 a. e. |
It was discovered on December 27, 1975 by the American astronomer Charles Kowal at the Palomar Observatory and was named after the character of ancient Greek mythology Tantalus , King Cypil in Phrygia [1] .
See also
- List of asteroids ( 2101-2200 )
- Classifications of Minor Planets
- List of asteroids crossing the Earth’s orbit
- List of asteroids crossing the orbit of Mars
Notes
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003 .-- P. 170. - ISBN 3-540-00238-3 .