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392250 (2009 WR168)
Classification: Main-belt Asteroid          SPK-ID: 2392250
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1626190135084588 7.9099e-08  
a 2.346460082490019 2.3009e-08 au
q 1.964881058638515 1.8925e-07 au
i 3.177787610971366 8.1315e-06 deg
node 92.79407276607546 0.00017098 deg
peri 347.1343693022196 0.00017352 deg
M 323.0530342414645 3.0435e-05 deg
tp 2459135.239353718447
(2020-Oct-12.73935372)
0.00011178 TDB
period 1312.859292848291
3.59
1.9311e-05
5.287e-08
d
yr
n .2742106499615571 4.0334e-09 deg/d
Q 2.728039106341523 2.6751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      5520 days (15.11 yr)  
   first obs. used      2005-09-11  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:26:40  

Additional Information
 Earth MOID = .980744 au 
 Jupiter MOID = 2.50117 au 
 T_jup = 3.541 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO476849  

392250 (2009 WR168)          Discovered 2009-Nov-22 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

Alternate Designations
 2009 WR168 = 2007 EP65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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