Astronomy:2012 FN
From HandWiki
| Discovery | |
|---|---|
| Discovered by | Mount Lemmon Survey (G96) |
| Discovery date | 17 March 2012 |
| Designations | |
| Minor planet category | Apollo NEO[1] |
| Orbital characteristics[1] | |
| Epoch 17 March 2012 (JD 2456003.5) | |
| Uncertainty parameter 9 | |
| |{{{apsis}}}|helion}} | 1.4500 astronomical unit|AU (216.92 Gm) |
| |{{{apsis}}}|helion}} | 0.99291 AU (148.537 Gm) |
| 1.2214 AU (182.72 Gm) | |
| Eccentricity | 0.18710 |
| Orbital period | 1.35 yr (493.07 d) |
| Mean anomaly | 21.742° |
| Mean motion | 0° 43m 48.432s /day |
| Inclination | 3.2329° |
| Longitude of ascending node | 356.91° |
| 147.89° | |
| Earth MOID | 0.015601 AU (2.3339 Gm) |
| Jupiter MOID | 3.54794 AU (530.764 Gm) |
| Physical characteristics | |
| Dimensions | ~5 meters (16 ft) |
| Absolute magnitude (H) | 29.2[1] |
2012 FN is an Apollo asteroid and a near-Earth object[1] that has a 1 in 4 billion chance of impacting Earth on 7 March 2113.[2] 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,[2] and would probably result in an air burst in the upper atmosphere. It is the least threatening asteroid listed on the Sentry Risk Table.[3] The very short observation arc of only 3 hours[2] results in a very poorly constrained orbit, and it could just as easily be 2 AU from Earth on 7 March 2113.[4]
See also
- List of Apollo asteroids
- 2012 FP35
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: (2012 FN)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012FN;cad=1. Retrieved 1 April 2016.
- ↑ 2.0 2.1 2.2 NASA JPL. "2012 FN Impact Risk". http://neo.jpl.nasa.gov/risk/2012fn.html. Retrieved 2014-10-25.
- ↑ Sentry Risk Table (NASA JPL)
- ↑ "2012FN Ephemerides for 6-8 March 2113". NEODyS (Near Earth Objects – Dynamic Site). https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2012FN&oc=500&y0=2113&m0=3&d0=6&h0=0&mi0=0&y1=2113&m1=3&d1=8&h1=0&mi1=0&ti=1.0&tiu=days. Retrieved 2014-10-25.
External links
- List of Apollo asteroids, Minor Planet Center
- 2012 FN at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2012 FN at ESA–space situational awareness
- 2012 FN at the JPL Small-Body Database
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