Discovery date 17 March 2012 Aphelion 1.4500 AU (216.92 Gm) Eccentricity 0.18710 Inclination 3.2329° Mean anomaly 21.742° Discoverer Mount Lemmon Survey | Minor planet category Apollo NEO Semi-major axis 1.2214 AU (182.72 Gm) Discovered 17 March 2012 Argument of perihelion 147.89° Asteroid group Apollo asteroid | |
Discovered by Mount Lemmon Survey (G96) | ||
2012 FN is an Apollo asteroid and a near-Earth object that has a 1 in 4 billion chance of impacting Earth on 7 March 2113. It is estimated to be 5 meters in diameter, which means that it poses no threat if it impacts Earth. An impact would have the kinetic energy of about 3 kt of TNT, and would probably result in an air burst in the upper atmosphere. It is the least threatening asteroid listed on the Sentry Risk Table. The very short observation arc of only 3 hours results in a very poorly constrained orbit, and it could just as easily be 2 AU from Earth on 7 March 2113.
References
2012 FN Wikipedia(Text) CC BY-SA