Astronomy:2012 EG5
From HandWiki
 The orbit of the asteroid 2012 EG5 during its flyby on April 1, 2012. The asteroids path is shown by the blue line. | |
| Discovery[1] | |
|---|---|
| Discovered by | Pan-STARRS |
| Discovery site | Haleakala Observatory, Haleakalā, Hawaii |
| Discovery date | March 13, 2012 |
| Designations | |
| 2012 EG5 | |
| MPO 230288 | |
| Minor planet category | Apollo  NEO |
| Orbital characteristics[2] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3[1] | |
| Observation arc | 21[1] d |
| |{{{apsis}}}|helion}} | 3.31229 astronomical unit|AU (495.512 Gm) |
| |{{{apsis}}}|helion}} | 0.98483 AU (147.328 Gm) |
| 2.14856 AU (321.420 Gm) | |
| Eccentricity | 0.54163 |
| Orbital period | 3.15 yr (1150.32 d) 3.15 yr |
| Mean anomaly | 256.02° |
| Mean motion | 0° 18m 46.512s /day[1] |
| Inclination | 3.02915° |
| Longitude of ascending node | 192.919° |
| 16.002° | |
| Earth MOID | 0.0000309134 AU (4,624.58 km)[2] |
| Mercury MOID | 0.54576 AU (81,645,000 km)[1] |
| Jupiter MOID | 1.64413 AU (245.958 Gm)[1] |
| Physical characteristics | |
| Sidereal rotation period | 0.29240 hr[2] |
| Absolute magnitude (H) | 24.3[2] |
2012 EG5 is an Apollo near-Earth asteroid with an estimated diameter of 47 meters (154 ft).[3] The asteroid was discovered on March 13, 2012. The asteroid came within 0.001539 astronomical unit|AU (230,200 km; 143,100 mi) of Earth during its closest approach on April 1, 2012,[2] just over half the distance between Earth and the Moon's orbit. It was briefly listed on the Sentry Risk Table with a 1 in 2,778,000 chance of an impact in 2107.[3] It was removed from the Sentry Risk Table on 1 April 2012.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "2012 EG5". Minor Planet Center. http://www.minorplanetcenter.net/db_search/show_object?utf8=✓&object_id=2012+EG5. Retrieved 16 August 2017.
- ↑ 2.0 2.1 2.2 2.3 2.4 "(2012 EG5)". JPL Small-Body Database. Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3601275.
- ↑ 3.0 3.1 "WayBack Machine archive from 27 March 2012". Wayback Machine. 2006-08-05. Archived from the original on March 27, 2012. https://web.archive.org/web/20120327161911/http://neo.jpl.nasa.gov/risk/2012eg5.html. Retrieved 2013-03-01.
- ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. http://neo.jpl.nasa.gov/risk/removed.html.
External links
- 2012 EG5 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2012 EG5 at ESA–space situational awareness
- 2012 EG5 at the JPL Small-Body Database
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