(9995) Alouette
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Asteroid (9995) Alouette |
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| Orbit of (9995) Alouette | |
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Asteroid family | Hertha family |
| Major semi-axis | 2.3915 AU |
| eccentricity | 0.1604 |
| Perihelion - aphelion | 2.0079 AU - 2.7750 AU |
| Inclination of the orbit plane | 2.3128 ° |
| Length of the ascending node | 20.9089 ° |
| Argument of the periapsis | 197.9229 ° |
| Sidereal period | 3.70 a |
| Mean orbital velocity | 19.27 km / s |
| Physical Properties | |
| Absolute brightness | 14.9 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | September 24, 1960 |
| Another name | 4805 PL , 1981 EP 22 |
| 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. | |
(9995) Alouette is an asteroid of the main inner belt that was discovered on September 24, 1960 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery came about as part of the Palomar-Leiden survey , during which Tom Gehrels examined field plates recorded at the University of Leiden with the 120 cm Oschin Schmidt telescope of the Palomar observatory .
The asteroid belongs to the Nysa group, a group of asteroids named after (44) Nysa (also called the Hertha family, after (135) Hertha ). According to the SMASS classification ( Small Main-Belt Asteroid Spectroscopic Survey ), a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel in (9995) Alouette assumed a light surface, so it could, roughly speaking, be around trade an S asteroid .
The timeless (non- osculating ) orbital elements of (9995) Alouette are almost identical to those of six smaller ones, if one considers the absolute brightness of 16.8, 16.3, 17.1, 18.0, 17.8 and 17, 3 against 14.9, asteroids: (137680) 1999 XW 45 , (147761) 2005 QJ 10 , (202499) 2006 BS 135 , (213587) 2002 NV 64 , (329954) 2005 QD 70 and (335687) 2006 WD 39 .
(9995) Alouette was named on November 11, 2000 after the first Canadian satellite , Alouette 1 , which sent the first research data from the terrestrial ionosphere in 1962 . The asteroid was named at the suggestion of Willem Fröger , a Dutch astronomer who works in Argentina .
Web links
- (9995) Alouette in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (9995) Alouette in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (9995) Alouette according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ^ 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)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)