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JPL Small-Body Database Browser
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164207 (2004 GU9)
Classification: Apollo [NEO, PHA]          SPK-ID: 2164207
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360327917930972 1.8211e-07  
a 1.001333879734335 1.8886e-09 au
q .8651196365570596 1.8155e-07 au
i 13.65082418587686 1.1941e-05 deg
node 38.55806442859338 1.4009e-05 deg
peri 279.9608376821009 2.561e-05 deg
M 255.6710231634083 3.153e-05 deg
tp 2458706.564302483554
(2019-Aug-11.06430248)		 3.1952e-05 TDB
period 365.9879551381482
1.00		 1.0354e-06
2.835e-09		 d
yr
n .9836389284016522 2.7828e-09 deg/d
Q 1.13754812291161 2.1455e-09 au
   Orbit Determination Parameters
   # obs. used (total)      238  
   data-arc span      6751 days (18.48 yr)  
   first obs. used      2001-05-11  
   last obs. used      2019-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64242  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-05 06:07:58  

Additional Information
 Earth MOID = .000412369 au 
 Jupiter MOID = 4.01102 au 
 T_jup = 6.041 
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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.1   n/a MPO291377  
diameter diameter 0.163 km 0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.219   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

164207 (2004 GU9)          Discovered 2004-Apr-13 by LINEAR at Socorro
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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