(3102) Krok ( Slovak: Krok ) is a small near-Earth asteroid from the Amur ( III ) group , which is characterized by extremely slow rotation around its axis and belongs to the bright spectral class S. It was discovered on August 21, 1981 by the Slovak astronomer Ladislav Brozhek at the Klet observatory and named after the mythical Slavic prince Krok , the founder of Krakow and the founder of the dynasty of Czech kings [1] [2] .
- Orbit of the asteroid Krok and its position in the solar system
| (3102) Croc | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | L. Brozhek |
| Place of discovery | Stand |
| Discovery date | August 21, 1981 |
| Alternative notation | 1981 QA |
| Category | NEA ( Cupids ) |
| Orbital characteristics | |
| Age of April 18, 2013 JD 2456400.5 | |
| Eccentricity ( e ) | 0.4477344 |
| Semimajor axis ( a ) | 321.908 million km (2.1518207 AU ) |
| Perihelion ( q ) | 177.779 million km (1,1883765 AU) |
| Aphelion ( Q ) | 466.037 million km (3,1152649 AU) |
| Circulation Period ( P ) | 1152.942 days (3.157 g. ) |
| Average orbital speed | 19,241 km / s |
| Inclination ( i ) | 8.41758 ° |
| Longitude node (Ω) | 172.24395 ° |
| Perihelion Argument (ω) | 154.45794 ° |
| Median Anomaly ( M ) | 9.95517 ° |
| physical characteristics | |
| Diameter | 1,6 km |
| Rotation period | 149.4 h |
| Spectral class | S |
| Apparent magnitude | 17.31 m (current) |
| Absolute magnitude | 15.6 m |
| Current distance from the sun | 1.349 a. e. |
| Current distance from earth | 0.718 a. e. |
See also
- List of asteroids ( 3101–3200 )
- 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. 213. - ISBN 3-540-00238-3 .
- ↑ (3102) Krok = 1981 QA