(164207) 2004 GU9

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
(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[edit]

References[edit]

  1. ^ a b "(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. 

External links[edit]