(8757) Cyaneus
Asteroid (8757) Cyaneus |
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Properties of the orbit ( animation ) | |
Orbit type | Inner main belt asteroid |
Major semi-axis | 2.1922 AU |
eccentricity | 0.0641 |
Perihelion - aphelion | 2.0517 AU - 2.3328 AU |
Inclination of the orbit plane | 1.9573 ° |
Length of the ascending node | 64.3376 ° |
Argument of the periapsis | 137.6871 ° |
Time of passage of the perihelion | 2nd October 2017 |
Sidereal period | 3.25 a |
Mean orbital velocity | 20.12 km / s |
Physical Properties | |
Medium diameter | 2.496 km (± 0.410) |
Albedo | 0.410 (± 0.117) |
Absolute brightness | 14.8 mag |
history | |
Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
Date of discovery | September 24, 1960 |
Another name | 6600 PL , 3148 T-2 |
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. |
(8757) Cyaneus is an asteroid of the main inner 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 is named after the hen harrier , whose scientific name is Circus cyaneus . At the time the asteroid was named on February 2, 1999, the hen harrier was on the Dutch Red List of Endangered Species .
Web links
- (8757) Cyaneus in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (8757) Cyaneus 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 (8757) Cyaneus according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)