(7816) Hanoi ( lat. Hanoi ) - an asteroid belonging to the group of asteroids crossing the orbit of Mars . It was discovered on December 18, 1987 by the Japanese astronomer M. Koisikawa at the Sendai Observatory and is named after the capital of Vietnam, Hanoi [1] .
| (7816) Hanoi | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | M. Koisikawa |
| Place of discovery | Sendai |
| Discovery date | December 18, 1987 |
| Eponym | Hanoi |
| Alternative notation | 1987 YA ; 1994 VB 1 |
| Category | Mars Crossers |
| Orbital characteristics | |
| Age of June 27, 2015 JD 2457200.5 | |
| Eccentricity ( e ) | 0.2943566 |
| Semimajor axis ( a ) | 346.158 million km (2,3139228 AU ) |
| Perihelion ( q ) | 244.264 million km (1,6328044 AU) |
| Aphelion ( Q ) | 448,052 million km (2,9950412 AU) |
| Circulation Period ( P ) | 1285.647 days (3.52 g. ) |
| Average orbital speed | 19.148 km / s |
| Inclination ( i ) | 2,37873 ° |
| Longitude node (Ω) | 223.04475 ° |
| Perihelion Argument (ω) | 16.60542 ° |
| Median Anomaly ( M ) | 170,42033 ° |
| physical characteristics | |
| Diameter | 3 - 6 km |
| Rotation period | 5.17 h |
| Apparent magnitude | 20.73 m (current) |
| Absolute magnitude | 15.0 m |
| Current distance from the sun | 2,798 a. e. |
| Current distance from earth | 3.414 a. e. |
Hanoi asteroid orbit and its position in the solar system
See also
- List of Asteroids ( 7801-7900 )
- 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. 617. - ISBN 3-540-00238-3 .