(4425) Bilk

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Asteroid
(4425) Bilk
Properties of the orbit ( animation )
Orbit type Main belt asteroid
Asteroid family Hertha family
Major semi-axis 2.36  AU
eccentricity 0.163
Perihelion - aphelion 1.976 AU - 2.744 AU
Inclination of the orbit plane 3.31 °
Length of the ascending node 67.91 °
Sidereal period 3.63 a
Physical Properties
Rotation period 5 h 15 min
Absolute brightness 13.9 likes
history
Explorer Luboš Kohoutek
Date of discovery October 30, 1967
Another name 1967 UQ 1983 EQ 1 1985 VE 3
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.

(4425) Bilk is a main belt asteroid that was discovered on October 30, 1967 by the Czech astronomer Luboš Kohoutek from the Hamburg observatory .

The asteroid was named after Bilk , a district of Düsseldorf . In 1843, Johann Friedrich Benzenberg set up the private Düsseldorf observatory in Bilk , which became the property of the city of Düsseldorf after his death. From this observatory, Karl Theodor Robert Luther discovered a total of 24 asteroids between 1852 and 1890. The observatory was destroyed during an air raid in 1943.

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