Discovery date 10 January 2008 Observation arc 13.78 yr (5032 days) Absolute magnitude 19.7 | Minor planet category Apollo Discovered 10 January 2008 Asteroid group Apollo asteroid | |
Aphelion 1.949938669767914 AU (291.70667299287 Gm) Perihelion 0.8147659469931870 AU (121.88725078904 Gm) Semi-major axis 1.382352308380551 AU (206.79696189096 Gm) Discoverer Lincoln Near-Earth Asteroid Research | ||
(332446) 2008 AF4 is an asteroid which was listed on the Sentry Risk Table in January 2008 with a Torino Scale rating of 1. The asteroid showed a 1 in 71,000 chance of impact on 9 January 2089. It was briefly downgraded to Torino Scale 0 in February 2008, but still showed a cumulative 1 in 53,000 chance of an impact. In March it was back at Torino Scale 1 with a 1 in 28,000 chance of impact on 9 January 2089. By mid April 2008, it was back to Torino Scale 0. It was removed from the Sentry Risk Table on 19 December 2009.
2183 passage
2008 AF4 may pass as close as 0.002 AU (300,000 km; 190,000 mi) from Earth on 2183-Jan-12. But the nominal solution shows the asteroid passing 0.009 AU (1,300,000 km; 840,000 mi) from Earth.
References
(332446) 2008 AF4 Wikipedia(Text) CC BY-SA