(164207) 2004 GU9

(164207) 2004 GU9
Discovery
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date 13 April 2004
Designations
NEO · Apollo
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 5424 days (14.85 yr)
Aphelion 1.1376258581 AU (170.18640603 Gm)
Perihelion 0.86490477 AU (129.387912 Gm)
1.001265315 AU (149.7871591 Gm)
Eccentricity 0.1361882
1.00 yr (365.95 d)
154.915171°
0° 59m 1.464s / day
Inclination 13.6490265°
38.6405971°
280.55672±0.00007°
2456145.53817±0.00006 jd
280.28542°
Earth MOID 0.000389702 AU (58,298.6 km)
Physical characteristics
Dimensions 160–360 meters[2]
21.1[1]

    (164207) 2004 GU9 is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group. It will be a quasi-satellite of Earth until around 2600.[3]

    On 14 April 2004 (with less than a 1-day observation arc), the Sentry Risk Table showed 180 virtual impactors.[4] It was removed from the Sentry Risk Table 2 days later on 16 April 2004.[5] (164207) 2004 GU9 now has a well determined orbit with an observation arc of 12 years.

    See also

    References

    1. 1 2 "(164207) 2004 GU9". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2164207. Retrieved 7 April 2016.
    2. ↑ "Absolute Magnitude (H)". NASA/JPL.
    3. ↑ Dynamical evolution of Earth’s quasi-satellites: 2004 GU9 and 2006 FV35
    4. ↑ "Major News about Minor Objects: Risk monitoring". hohmanntransfer. 2004-04-14.
    5. ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2015-03-01.
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