(21664) Konradzuse

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Asteroid
(21664) Konradzuse
Properties of the orbit ( animation )
Epoch:  March 23, 2018 ( JD 2,458,200.5)
Orbit type Middle main belt asteroid
Major semi-axis 2.6145  AU
eccentricity 0.2074
Perihelion - aphelion 2.0723 AU - 3.1567 AU
Inclination of the orbit plane 9.5731 °
Length of the ascending node 29.8146 °
Argument of the periapsis 69.9693 °
Time of passage of the perihelion 1st September 2017
Sidereal period 4.23 a
Mean orbital velocity 18.41 km / s
Physical Properties
Medium diameter 4.156 km (± 0.181)
Albedo 0.195 (± 0.047)
Absolute brightness 14.4 mag
history
Explorer Lenka Kotková
Date of discovery September 4, 1999
Another name 1999 TG 1 , 1988 AR 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.

(21664) Konradzuse is an asteroid of the central main belt that was discovered on September 4, 1999 by the Czech astronomer Lenka Kotková (at that time still under her birth name Lenka Šarounová ) at the Ondřejov observatory ( IAU code 557) in Ondřejov u Prahy . The asteroid had already been sighted on January 11, 1988 under the provisional designation 1988 AR 2 at the Karl Schwarzschild Observatory in Tautenburg .

The mean diameter of the asteroid was calculated to be 4.156 km (± 0.181).

(21664) Konradzuse is named after the German computer pioneer Konrad Zuse . Zuse computers were the first computers used by Czechoslovak astronomers. The asteroid was named on September 2, 2001.

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