(6489) Golevka

Template: Infobox Asteroid / Maintenance / Error 1

( 6489 ) Near-Earth Asteroid Golevka is a ( planetoid ), from the group of Apollo asteroids. These are celestial bodies, their path may cross the Earth's orbit. However, he is also one of the Alinda asteroids that are 3:1 orbital resonance with Jupiter and in 1:4 resonance to the earth.

The asteroid was discovered on May 10, 1991 by Eleanor F. Helin at Mount Palomar Observatory. The name goes back to an international research project and consists of the name of the participating radio telescopes ( Goldstone, Evpatoria, Kashima ).

Golevka moves between 0.9866 AU ( perihelion ) and 4.0096 AU ( aphelion ) on a highly eccentric orbit around the Sun in 3.94 years. The orbital eccentricity is 0.6051, the orbit is inclined to 2.2769 ° to the ecliptic. The asteroid can be up to 0.034 AU of the Earth - that's 13 times the lunar distance - approach.

Golevka was examined closely by radar observations. It turned out that the asteroid has 0.35 × 0.25 × 0.25 km stretch, has sharp edges, corners, cracks and hollows. Golevka seems to be a massive boulder, which is the remnant of a collision. The asteroid rotates in about 6 hours on its axis.

Golevka was the first asteroid, where the Yarkovsky effect could be detected. This is a deviation of the path caused by the radiation pressure caused by temperature differences.