(5143) Heracles
|
Asteroid (5143) Heracles |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Apollo type |
| Major semi-axis | 1.8335 AU |
| eccentricity | 0.7723 |
| Perihelion - aphelion | 0.4176 AU - 3.2495 AU |
| Inclination of the orbit plane | 9.0310 ° |
| Length of the ascending node | 309.5146 ° |
| Argument of the periapsis | 227.7824 ° |
| Sidereal period | 2.48 a |
| Mean orbital velocity | 22.00 km / s |
| Physical Properties | |
| Medium diameter | 4.843 ± 0.378 km |
| Albedo | 0.227 ± 0.054 |
| Rotation period | 2.7063 h |
| Absolute brightness | 14.0 mag |
| Spectral class | SMASSII : O |
| history | |
| Explorer | CS Shoemaker |
| Date of discovery | November 7, 1991 |
| Another name | 1991 VL , 1962 PG |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(5143) Heracles is a near-Earth asteroid of the Apollo type , which was discovered on November 7, 1991 by the American astronomer Carolyn Jean Spellmann Shoemaker at the Palomar Observatory .
The heavenly body is named after Heracles , the hero and demigod of Greek mythology .
In 2011, an approx. 600 (± 300) m tall companion of Heracles was discovered at the Arecibo Observatory , who circled him at a distance of approx. 8 (± 4) km and required approx. 40 to 57 hours for this.
See also
Web links
- Asteroid Heracles: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- Asteroid Heracles in the Small-Body Database of NASA's Jet Propulsion Laboratory at the California Institute of Technology, Pasadena, USA
- (5143) Heracles in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- 3D orbit animation of (5143) Heracles (Java applet)