| mean_motion = {{Deg2DMS|0.2482623|sup=ms}} / day
| orbit_ref =
| mean_radius = 0.265 ± 0.015 km
| observation_arc = 8968 days (24.55 yr)
| uncertainty = 0
| moid = {{Convert|0.0288423|AU|Gm|abbr=on}}
| jupiter_moid = {{Convert|1.13922|AU|Gm|abbr=on}}
}}6489 Golevka is an Apollo, Mars-crosser, and Alinda asteroid discovered in 1991 by Eleanor F. Helin.
Its name has a complicated origin. In 1995, Golevka was studied simultaneously by three radar observatories across the world: Goldstone in California, Yevpatoria RT-70 radio telescope in Ukraine (Yevpatoria is sometimes romanized as Evpatoria) and Kashima in Japan. 'Golevka' comes from the first few letters of each observatory's name; it was proposed by the discoverer following a suggestion by Alexander L. Zaitsev.
Golevka is a small object, measuring 0.6 × 1.4 km. The radar observations revealed that it has a very strange, angular shape that looks different depending on the direction. In 2003 the Yarkovsky effect was first observed at work by high-precision radar observations of Golevka.[7] Between 1991 and 2003, the small force of the Yarkovsky Effect caused a shift of 15 kilometers (9.4 miles) from what would be expected based on only gravitational interactions.[7] This helped evaluate the asteroid's bulk density (2.7 ± 0.5 g/cm³) and mass (2.10{{E|11}} kg).
Golevka approaches Earth to {{convert|0.05|AU|km mi|abbr=on|lk=on}} in 2046, 0.10 AU in 2069, and 0.11 AU in 2092.[9] On the other hand, Golevka's collision probability with any planet is negligible for at least the next nine centuries.[10] Its orbit is strikingly similar to that of 4179 Toutatis in eccentricity, semi-major axis, and inclination. However, Toutatis is better known due to a close approach to Earth in 2004.
References
1. ^1 2 {{cite web |date = January 14, 2004 |title = Precision NEO Orbits and the Yarkovsky Effect |publisher = Asteroid and Comet Impact Hazards (NASA) |author = David Morrison |authorlink = David Morrison (astrophysicist) |url = http://impact.arc.nasa.gov/news_detail.cfm?ID=132 |accessdate = 2004-04-15 |deadurl = yes |archiveurl = https://web.archive.org/web/20051108142011/http://impact.arc.nasa.gov/news_detail.cfm?ID=132 |archivedate = November 8, 2005 |df = }}
2. ^1 {{cite web |title=NEODys (6489) Golevka |publisher=Department of Mathematics, University of Pisa, ITALY |url=http://newton.dm.unipi.it/neodys/index.php?pc=1.1.8&n=6489 |accessdate=2009-03-16}}
3. ^1 {{cite journal |last=Hudson |first=R. |author2=Ostro, S. |author3=Jurgens, R. |author4=Rosema, K. |author5=Giorgini, J. |author6=Winkler, R. |title=Radar observations and physical model of asteroid 6489 Golevka |journal=Icarus |volume=148 |issue=1 |pages=37–51 |date=2000 |hdl=2014/14189|bibcode = 2000Icar..148...37H |doi = 10.1006/icar.2000.6483 |display-authors=etal}}