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JPL Small-Body Database Browser
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295239 (2008 GJ21)
Classification: Main-belt Asteroid          SPK-ID: 2295239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1521547052994809 5.802e-08  
a 2.364391807198818 2.0977e-08 au
q 2.004638468561974 1.382e-07 au
i .8817107112269367 7.2262e-06 deg
node 186.4662666727048 0.00033393 deg
peri 60.60274930166957 0.00033558 deg
M 89.55142053426177 2.5966e-05 deg
tp 2458670.170337084550
(2019-Jul-05.67033708)
9.8045e-05 TDB
period 1327.937378771836
3.64
1.7672e-05
4.838e-08
d
yr
n .2710971208092295 3.6078e-09 deg/d
Q 2.724145145835661 2.4169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      217  
   data-arc span      5079 days (13.91 yr)  
   first obs. used      2005-08-06  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55334  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:38:31  

Additional Information
 Earth MOID = .991172 au 
 Jupiter MOID = 2.29774 au 
 T_jup = 3.533 
[ 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 17.6   n/a MPO476295  

295239 (2008 GJ21)          Discovered 2008-Apr-11 by Yeung, W. K. Y. at Desert Eagle
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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