Astronomy:2002 MN
| Discovery[1][2] | |
|---|---|
| Discovered by | MIT Lincoln Laboratory |
| Discovery date | 17 June 2002 |
| Designations | |
| Minor planet category | |
| Orbital characteristics[3] | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 22.04 yr |
| |{{{apsis}}}|helion}} | 2.7236 astronomical unit|AU (407.44 Gm) |
| |{{{apsis}}}|helion}} | 0.90900 AU (135.984 Gm) |
| 1.8163 AU (271.71 Gm) | |
| Eccentricity | 0.49953 |
| Orbital period | 2.4478 yr (894.08 d) |
| Mean anomaly | 224.060° |
| Mean motion | 0.40265° / day |
| Inclination | 1.0471° |
| Longitude of ascending node | 85.291° |
| 131.599° | |
| Earth MOID | 0.000353729 AU (52,917.1 km) |
| Jupiter MOID | 2.24701 AU (336.148 Gm) |
| Physical characteristics | |
| Dimensions | ~73 meters (240 ft)[4] (assumed)[lower-alpha 1] |
| Mass | 5.4×108 kg |
| Absolute magnitude (H) | 23.7[3] |
2002 MN is the provisional designation given to a 73-meter Apollo near-Earth asteroid that on 14 June 2002 passed Earth at a distance of 0.0008 astronomical unit|AU (120,000 km; 74,000 mi),[3] about one third the distance to the Moon (0.3 LD).[5] The close approach was second only to the Earth approach by the 10-meter asteroid 1994 XM1.[5] 2002 MN was discovered on 17 June 2002, three days after closest approach.[1] Its mass and relative velocity were in the same general range as the object ascribed to the Tunguska event of 1908, which leveled over 2,100 km2 (800 sq mi) of trees in Siberia.
2002 MN was estimated to have a 1 in 360,000 chance of Earth impact sometime after 2070,[4] but further observations in July 2024[6] ruled this out, and the object was removed from the risk list.
Template:Large near earth asteroid flybys 1LD
Notes
References
- ↑ 1.0 1.1 "MPEC 2002-M14 : 2002 MN". IAU Minor Planet Center. 2002-06-18. http://www.minorplanetcenter.net/mpec/K02/K02M14.html.
- ↑ Asteroid's near-miss with Earth - 21 June 2002 - New Scientist
- ↑ 3.0 3.1 3.2 "JPL Close-Approach Data: (2002 MN)". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002%20MN.
- ↑ 4.0 4.1 "Earth Impact Risk Summary: 2002 MN". NASA/JPL Near-Earth Object Program Office. https://cneos.jpl.nasa.gov/sentry/details.html#?des=2002%20MN.
- ↑ 5.0 5.1 Don Yeomans (June 19, 2002). "Asteroid 2002 MN: Second Closest Asteroid Approach to Earth". NASA's Near Earth Object Program Office. http://neo.jpl.nasa.gov/news/news130.html.
- ↑ "MPEC 2024-N09 : 2002 MN". IAU Minor Planet Center. 2024-07-02. https://www.minorplanetcenter.net/mpec/K24/K24N09.html.
External links
- 2002 MN at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2002 MN at ESA–space situational awareness
- 2002 MN at the JPL Small-Body Database
| Preceded by 2002 JE9 |
Large NEO Earth close approach (inside the orbit of the Moon) 14 June 2002 |
Succeeded by (308635) 2005 YU55 |
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