Astronomy:2011 GA
From HandWiki
Discovery[1] | |
---|---|
Discovered by | Mount Lemmon Survey |
Discovery site | Catalina Mountains north of Tucson, Arizona, USA |
Discovery date | April 1, 2011 |
Designations | |
2011 GA | |
MPO 200327 | |
Minor planet category | Apollo ![]() NEO, PHA |
Orbital characteristics[2] | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 5 | |
Observation arc | 70 d |
|{{{apsis}}}|helion}} | 2.8692 astronomical unit|AU (429.23 Gm) |
|{{{apsis}}}|helion}} | 0.73727 AU (110.294 Gm) |
1.80321 AU (269.756 Gm) | |
Eccentricity | 0.59114 |
Orbital period | 2.42 yr (884.44 d) |
Mean anomaly | 305.631° |
Mean motion | 0° 24m 25.33s /day |
Inclination | 9.8282° |
Longitude of ascending node | 200.4246° |
109.750° | |
Earth MOID | 0.00686464 AU (1,026,936 km) |
Jupiter MOID | 2.51622 AU (376.421 Gm) |
Physical characteristics | |
Dimensions | 170–380 m[3] |
Absolute magnitude (H) | 21.0[2] |
2011 GA is a small asteroid that is a Near-Earth object and an Apollo asteroid.
Orbit
The orbit of 2011 GA makes it a potentially hazardous asteroid (PHA) that is predicted to pass within 0.02 astronomical unit|AU (3,000,000 km; 1,900,000 mi) of the Earth on Oct 14, 2023.[4] For comparison, the distance to the Moon is about 0.0026 AU (384,400 km). The asteroid passed within 0.06 astronomical unit|AU (9,000,000 km; 5,600,000 mi) from Earth around October 15, 1977.
The Jupiter Tisserand invariant, used to distinguish different kinds of orbits, is 3.821.[2]
See also
References
- ↑ "2011 GA". Minor Planet Center. 2011-06-10. http://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=2011+GA.
- ↑ 2.0 2.1 2.2 "JPL Small-Body Database Browser: (2011 GA)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011%20GA. Retrieved 31 March 2016.
- ↑ "ABSOLUTE MAGNITUDE (H)". NASA. http://neo.jpl.nasa.gov/glossary/h.html.
- ↑ "JPL Small-Body Database Browser: (2011 GA) – Close-Approach Data". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011GA;cad=1#cad. Retrieved 2015-05-05.
External links
- 2011 GA at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2011 GA at ESA–space situational awareness
- 2011 GA at the JPL Small-Body Database
![]() | Original source: https://en.wikipedia.org/wiki/2011 GA.
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