(620) Drakonia ( Latin Drakonia ) is an asteroid in the asteroid belt , which belongs to the bright spectral class E. It was discovered on October 26, 1906 by the American astronomer Joel Metcalf at the Taunton Observatory and may be named after Iowa Drake University in the US state [1] .
| (620) Dragon | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Joel Metcalf |
| Place of discovery | Taunton |
| Discovery date | October 26, 1906 |
| Eponym | Drake university |
| Alternative notation | 1906 WE ; 1950 ET; 1950 HS; 1955 QE 1 |
| Category | Main ring |
| Orbital characteristics | |
| Age of December 9, 2014 JD 2457000.5 | |
| Eccentricity ( e ) | 1,1349314 |
| Semimajor axis ( a ) | 364.32 million km (2,4353294 AU ) |
| Perihelion ( q ) | 2,1067269 |
| Aphelion ( Q ) | 2.7639318 |
| Circulation Period ( P ) | 1388.146 days (3.801 g. ) |
| Average orbital speed | 10.754 km / s |
| Inclination ( i ) | 7.73920 ° |
| Longitude node (Ω) | 0.01907 ° |
| Perihelion Argument (ω) | 336.54772 ° |
| Median Anomaly ( M ) | 212,50012 ° |
| Asteroid satellite | - |
| physical characteristics | |
| Diameter | 11,385 km |
| Rotation period | 5,487 h |
| Spectral class | E |
| Absolute magnitude | 11.28 m |
| Albedo | 0.419 |
| Current distance from the sun | 3,826 a. e. |
The orbit of the asteroid Draconium and its position in the solar system
Photometric observations made in 2001 at the Palmer Divide Observatory made it possible to obtain the light curves of this body, from which it followed that the period of rotation of the asteroid around its axis is 5.49 ± 0.01 hours, with a change in brightness with rotation of 0.56 ± 0.02 m [2] .
See also
- List of Asteroids (601-700)
- 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. 62. - ISBN 3-540-00238-3 .
- ↑ Warner, Brian D. (January 2011), Upon Further Review: IV. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory , vol. 38, p. 52–54
Links
- NASA JPL Database of Small Bodies in the Solar System (620 )
- MPC Small Body Solar System Database (620 )
- Lightcurve plot of 620 Drakonia , Palmer Divide Observatory, BD Warner (2001)
- Asteroid Lightcurve Database (LCDB) , query form ( info )
- Asteroids and comets rotation curves, CdR - Observatoire de Genève, Raoul Behrend