(8757) Cyaneus

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Asteroid
(8757) Cyaneus
Properties of the orbit ( animation )
Epoch:  March 23, 2018 ( JD 2,458,200.5)
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 .

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