2011 GA

Last updated

2011 GA
Discovery [1]
Discovered by Mount Lemmon Survey
Discovery site Catalina Mountains north of Tucson, Arizona, USA
Discovery dateApril 1, 2011
Designations
2011 GA
MPO 200327
Apollo Minor Planets - Apollo.svg
NEO, PHA
Orbital characteristics [2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 5
Observation arc 70 d
Aphelion 2.8692  AU (429.23  Gm)
Perihelion 0.73727 AU (110.294 Gm)
1.80321 AU (269.756 Gm)
Eccentricity 0.59114
2.42 yr (884.44 d)
305.631°
0° 24m 25.33s /day
Inclination 9.8282°
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]
21.0 [2]

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

    Contents

    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. 1 2 3 "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. Archived from the original on 2 March 2001.
    4. ↑ "JPL Small-Body Database Browser: (2011 GA) – Close-Approach Data". Jet Propulsion Laboratory . Retrieved 5 May 2015.


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