Discovered by LINEAR Discovered 13 April 2004 Argument of perihelion 280.28542° | 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) 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(Text) CC BY-SA