2011 GA

2011 GA is a small asteroid that is a Near-Earth object and an Apollo asteroid.

2011 GA
Discovery[1]
Discovered byMount Lemmon Survey
Discovery siteCatalina Mountains north of Tucson, Arizona, USA
Discovery dateApril 1, 2011
Designations
2011 GA
MPO 200327
Apollo
NEO, PHA
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 5
Observation arc70 d
Aphelion2.8692 AU (429.23 Gm)
Perihelion0.73727 AU (110.294 Gm)
1.80321 AU (269.756 Gm)
Eccentricity0.59114
2.42 yr (884.44 d)
305.631°
0° 24m 25.33s /day
Inclination9.8282°
200.4246°
109.750°
Earth MOID0.00686464 AU (1,026,936 km)
Jupiter MOID2.51622 AU (376.421 Gm)
Physical characteristics
Dimensions170–380 m[3]
21.0[2]

    Orbit

    The orbit of 2011 GA makes it a Potentially Hazardous Asteroid (PHA) that is predicted to pass within 0.02 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 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
    1. "2011 GA". Minor Planet Center. 10 June 2011.
    2. "JPL Small-Body Database Browser: (2011 GA)" (last observation: 2011-06-10; arc: 70 days). Jet Propulsion Laboratory. Retrieved 31 March 2016.
    3. "ABSOLUTE MAGNITUDE (H)". NASA.
    4. "JPL Small-Body Database Browser: (2011 GA) – Close-Approach Data". Jet Propulsion Laboratory. Retrieved 5 May 2015.


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