|Properties of the orbit ( animation )|
|Orbit type||Main outer belt asteroid|
|Major semi-axis||3.1620 AU|
|Perihelion - aphelion||2.9442 AU - 3.3798 AU|
|Inclination of the orbit plane||11.5129 °|
|Length of the ascending node||209.8823 °|
|Argument of the periapsis||185.6799 °|
|Time of passage of the perihelion||7th November 2017|
|Sidereal period||5.62 a|
|Medium diameter||27.570 km (± 0.268)|
|Albedo||0.040 (± 0.008)|
|Absolute brightness||11.9 likes|
|Explorer||Tsutomu Hioki , Nobuhiro Kawasato|
|Date of discovery||November 2nd 1989|
|Another name||1989 VM , 1971 QD 1 , 1980 DH, 1986 GL 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.|
(4772) Frankdrake is a main outer belt asteroid discovered on November 2, 1989 by Japanese astronomer Tsutomu Hioki and Japanese amateur astronomer Nobuhiro Kawasato at the Okutama Observatory ( IAU code 877) in western Tokyo Prefecture . The asteroid had already been sighted: on August 19, 1971 under the provisional designation 1971 QD 1 at the Crimean Observatory in Nautschnyj , in February 1980 (1980 DH) at the Kleť Observatory near Český Krumlov and on April 4, 1986 (1986 GL 2 ) again at the Crimean Observatory in Nautschnyj.
The mean diameter of the asteroid was determined to be 27.570 km (± 0.268). With an albedo of 0.040 (± 0.008) it has a very dark surface.
Mean distance from the Sun ( major semiaxis ), eccentricity and inclination of the orbit plane of the asteroid roughly correspond to the Eos family , a group of asteroids that typically have large semiaxes of 2.95 to 3.1 AU , bounded inward by the Kirkwood gap of 7: 3-resonance with Jupiter , as well as orbital inclinations between 8 ° and 12 °. The group is named after the asteroid (221) Eos . The family is believed to have emerged from a collision more than a billion years ago.
- (4772) Frankdrake in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (4772) Frankdrake in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (4772) Frankdrake according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)