(20961) Arkesilay ( ancient Greek Ἀρκεσίλαος ) is a typical Jupiter Trojan asteroid , moving at L 4 Lagrange, 60 ° ahead of the planet. The asteroid was discovered on September 19, 1973 by the Dutch astronomers K. Y. van Houten , I. van Houten-Gruneveld and Tom Gerels at the Palomar Observatory and is named after Arkesilai , one of the heroes of the Trojan War [1] .
| (20961) Arkesilay | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | K. Y. van Houten , I. van Houten-Gruneveld , Tom gerels |
| Detection point | Palomar |
| Date of discovery | September 19, 1973 |
| Alternative designations | 1973 SS 1 ; 1996 RQ 28 |
| Category | Jupiter's Trojans ( L 4 ) |
| Orbital characteristics | |
| The era of November 4, 2013 JD 2456600.5 | |
| Eccentricity ( e ) | 0,0183905 |
| Semi-axis ( a ) | 768.942 million km (5.1400618 a. E.) |
| Perihelion ( q ) | 754.801 million km (5.0455335 a. E.) |
| Afhelia ( Q ) | 783.084 million km (5.2345901 a. E.) |
| Period of circulation ( P ) | 4256,483 days (11,654 g ) |
| Average orbital speed | 13,136 km / s |
| Inclination ( i ) | 9.20803 ° |
| Ascending node longitude (Ω) | 27.90857 ° |
| Perihelion Argument (ω) | 52.23007 ° |
| Mean Anomaly ( M ) | 73.33469 ° |
| physical characteristics | |
| Diameter | 12 - 26 km |
| Apparent magnitude | 18.9 m (current) |
| Absolute magnitude | 11.8 m |
| Current distance from the Sun | 5.173 a. e. |
| Current distance from Earth | 4.229 a. e. |
Orbit of Artesilay asteroid and its position in the solar system
See also
- List of asteroids ( 20901-21000 )
- Small Planet Classifications
- List of Trojan Asteroids ("Greeks")
- List of Trojan Asteroids (Trojans)
Notes
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003. - P. 864. - ISBN 3-540-00238-3 .