(8965) Citrinella
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Asteroid (8965) Citrinella |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Themis family |
| Major semi-axis | 3.1614 AU |
| eccentricity | 0.1368 |
| Perihelion - aphelion | 2.7290 AU - 3.5938 AU |
| Inclination of the orbit plane | 0.8679 ° |
| Length of the ascending node | 160.1414 ° |
| Argument of the periapsis | 111.1362 ° |
| Time of passage of the perihelion | October 28, 2015 |
| Sidereal period | 5.62 a |
| Mean orbital velocity | 16.73 km / s |
| Physical Properties | |
| Medium diameter | 12.591 (± 0.191) km |
| Albedo | 0.070 (± 0.016) |
| Absolute brightness | 13.1 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | October 17, 1960 |
| Another name | 9511 PL , 1978 VK 11 |
| 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. | |
(8965) Citrinella is an asteroid of the outer main belt , which 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 Themis family, a group of asteroids named after (24) Themis . The timeless (non- osculating ) orbital elements of (8965) Citrinella are almost identical to those of the three smaller ones, assuming the absolute magnitude of 14.4, 16.7 and 16.2 compared to 13.0, asteroids (71725) 2000 HN 9 , (300212) 2006 WZ 153 and (323595) 2004 TB 281 .
The mean diameter of the asteroid was calculated to be 12.591 (± 0.191) km . In the case of multiple observations of the light curve in 2009, 2015 and 2018, this was not sufficient to determine the rotation period .
(8965) is citrinella after Goldammer named, whose scientific name Emberiza citrinella reads. At the time the asteroid was named on February 2, 1999, the goldhammer was on the Dutch Red List of Endangered Species .
Web links
- (8965) Citrinella in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (8965) Citrinella 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 (8965) citrinella according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)