(8969) Alexandrinus
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Asteroid (8969) Alexandrinus |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.4067 AU |
| eccentricity | 0.0789 |
| Perihelion - aphelion | 2.2166 AU - 2.5968 AU |
| Inclination of the orbit plane | 0.9642 ° |
| Length of the ascending node | 154.3631 ° |
| Argument of the periapsis | 282.6786 ° |
| Time of passage of the perihelion | March 25, 2019 |
| Sidereal period | 3.73 a |
| Mean orbital velocity | 19.20 km / s |
| Physical Properties | |
| Medium diameter | 4.238 km (± 0.080) |
| Albedo | 0.247 (± 0.033) |
| Absolute brightness | 14.1 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | 29th September 1973 |
| Another name | 1218 T-2 , 1981 YJ 1 , 1990 ET 5 |
| 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. | |
(8969) Alexandrinus is an asteroid of the inner main belt , which was discovered on September 29, 1973 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery was made during the 2nd Trojan survey, during which Tom Gehrels surveyed field plates recorded with the 120 cm Oschin Schmidt telescope of the Palomar observatory at the University of Leiden , 13 years after the start of the Palomar-Leiden- Surveys .
The mean diameter of the asteroid was calculated to be just over 4 km, the albedo to be 0.247 (± 0.033).
(8969) Alexandrinus is named after the Kentish plover , whose scientific name is Charadius alexandrinus . At the time the asteroid was named on February 2, 1999, the kingfisher was on the Dutch Red List of Endangered Birds .
Web links
- (8969) Alexandrinus in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (8969) of Alexandria in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
Individual evidence
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Springer, Heidelberg 2012, 6th edition, page 663 (English)