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

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363194188431618 7.6442e-07  
a 1.001189102103109 4.2917e-09 AU
q .8647075855523063 7.637e-07 AU
i 13.64961634465531 5.9452e-05 deg
node 38.71611880151519 4.2808e-05 deg
peri 280.5037007161183 5.9324e-05 deg
M 250.9185289959277 5.603e-05 deg
tp 2456511.371795971838
(2013-Aug-06.87179597)		 5.6682e-05 JED
period 365.9085835794385
1.00		 2.3528e-06
6.442e-09		 d
yr
n .983852295779348 6.3261e-09 deg/d
Q 1.137670618653912 4.8768e-09 AU
   Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      4295 days (11.76 yr)  
   first obs. used      2001-05-11  
   last obs. used      2013-02-12  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .59411  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 15:40:02  

Additional Information
 Earth MOID = .000560337 AU 
 T_jup = 6.042 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.148 mag .54099 40 autocmod 2.5c

164207 (2004 GU9)          Discovered 2004-Apr-13 by LINEAR at Socorro (704)
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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