Rahul Sharma (Editor)

(164207) 2004 GU9

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Discovered by  LINEAR
Minor planet category  Apollo
Discovered  13 April 2004
Argument of perihelion  280.28542°
Asteroid group  Apollo asteroid
Discovery date  13 April 2004
Observation arc  5424 days (14.85 yr)
Inclination  13.649026°
Discovery site  Socorro
Aphelion  1.1376258581 AU (170.18640603 Gm)
Semi-major axis  1.001265315 AU (149.7871591 Gm)
Discoverer  Lincoln Near-Earth Asteroid Research
Similar  2003 YN107, 2002 AA29, 2014 OL339, (419624) 2010 SO16, 54509 YORP

(164207) 2004 GU9 is a small near-Earth asteroid in the Apollo asteroid family. It will be a quasi-satellite of Earth until around 2600.

On 14 April 2004 (with less than a 1-day observation arc), the Sentry Risk Table showed 180 virtual impactors. It was removed from the Sentry Risk Table 2 days later on 16 April 2004. (164207) 2004 GU9 now has a well determined orbit with an observation arc of 12 years.

References

(164207) 2004 GU9 Wikipedia