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180639 (2004 GQ9)
Classification: Main-belt Asteroid          SPK-ID: 2180639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08556027979495928 6.996e-08  
a 2.949673466829184 3.0297e-08 au
q 2.697298579703512 2.126e-07 au
i 8.514445487309068 6.225e-06 deg
node 7.243079730017218 5.2689e-05 deg
peri 289.0923004292613 6.7142e-05 deg
M 23.16351581881423 3.9015e-05 deg
tp 2459081.441250454520
(2020-Aug-19.94125045)
0.00020109 TDB
period 1850.373240903244
5.07
2.8508e-05
7.805e-08
d
yr
n .1945553426963033 2.9975e-09 deg/d
Q 3.202048353954857 3.2889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      21863 days (59.86 yr)  
   first obs. used      1960-09-29  
   last obs. used      2020-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5985  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:04:00  

Additional Information
 Earth MOID = 1.69533 au 
 Jupiter MOID = 2.0196 au 
 T_jup = 3.248 
[ show covariance matrix ]

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 15.95   n/a E2021B55  

180639 (2004 GQ9)          Discovered 2004-Apr-12 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 GQ9 = 2006 WH157 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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