(2401) Aehlita
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Asteroid (2401) Aehlita |
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| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt asteroid |
| Asteroid family | Agnia family |
| Major semi-axis | 2.7702 AU |
| eccentricity | 0.0595 |
| Perihelion - aphelion | 2.6053 AU - 2.9351 AU |
| Inclination of the orbit plane | 4.3285 ° |
| Length of the ascending node | 50.9198 ° |
| Argument of the periapsis | 37.0426 ° |
| Time of passage of the perihelion | February 12, 2018 |
| Sidereal period | 4.61 a |
| Mean orbital velocity | 17.90 km / s |
| Physical Properties | |
| Medium diameter | 8.621 km (± 0.094) |
| Albedo | 0.288 (± 0.040) |
| Absolute brightness | 12.5 mag |
| history | |
| Explorer | Tamara Smirnova |
| Date of discovery | 2nd November 1975 |
| Another name | 1972 VM 2 , 1954 CP, 1957 WC, 1978 JS 1 |
| 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. | |
(2401) Aehlita is an asteroid of the main middle belt , which was discovered by the Soviet astronomer Tamara Smirnova on November 2, 1975 at the Crimean Observatory in Nautschnyj ( IAU code 095). The asteroid had already been sighted on February 9, 1954 under the provisional designation 1954 CP at the Goethe Link Observatory in Indiana and on November 18 and 20, 1957 (1957 WC) at the observatory on Purple Mountain near Nanjing .
The Italian astronomer Vincenzo Zappalà , with the help of a hierarchical cluster analysis in a publication from 1995 (et al.), Extrapolated the asteroid's membership of the Liberatrix family, a group of asteroids named after (125) Liberatrix . According to the latest definition of AstDyS-2 database is (2401) Aehlita member of Agnia family, a group of asteroids that resulted from the breakup of a large body years ago more than 140 million, after its largest member (847) Agnia was named . The ageless (not osculating ) orbital elements of (2401) Aehlita are almost identical to those of nine further smaller (when one of the absolute brightness emanates) asteroid: (227454) 2005 WJ 99 , (319,181) 2005 YH 125 , (320292) 2007 RO 221 , (368004) 2012 FB 53 , (417189) 2005 WV 169 , (445656) 2011 UD 67 , (490541) 2009 VN 48 , 2010 EY 66 and 2010 TX 223 .
According to the SMASS classification ( Small Main-Belt Asteroid Spectroscopic Survey ), a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel at (2401) Aehlita assumed a light surface, so it could, roughly speaking, be around trade an S asteroid . The actual albedo was determined to be 0.288 (± 0.040).
The mean diameter of (2401) Aehlita was calculated to be 8.621 km (± 0.094).
The asteroid was named on February 8, 1982 after Aehlita ( Аэлита , also Ae͏̈lita and Aelita ), the protagonist of the Mars novel of the same name by the Soviet writer Alexei Nikolajewitsch Tolstoy from 1922. In 1994 the asteroid (3771) Alexejt was named after Alexei Nikolajewitsch Tolstoy .
Web links
- (2401) Aehlita in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2401) Aehlita in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English) * Discovery Circumstances of (2401) Aehlita according to the Minor Planet Center of the International Astronomical Union at Harvard -Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (2401) Aehlita at the IAU Minor Planet Center (English)
- ↑ Database with the assignment of 12,487 asteroids to asteroid groups (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ^ Gianluca Masi, Sergio Foglia, Richard P. Binzel: Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog . (English)
- ↑ subdivision of asteroids to S-types, C-types and V-types (English)
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names (Third Revised and Enlarged Edition) . Springer Verlag, Berlin / Heidelberg 1997, ISBN 978-3-662-06617-1 , page 310.