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442500 (2011 WG2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2442500
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07912865837493074 7.3886e-08  
a 3.543538752900111 9.5073e-08 au
q 3.26314328548355 2.7824e-07 au
i 19.13575830764558 9.1917e-06 deg
node 74.51992939129445 2.5403e-05 deg
peri 307.863337732664 6.3408e-05 deg
M 142.3015676772313 5.9769e-05 deg
tp 2458037.422158674425
(2017-Oct-10.92215867)
0.00039378 TDB
period 2436.431506247427
6.67
9.8054e-05
2.685e-07
d
yr
n .1477570779547459 5.9464e-09 deg/d
Q 3.823934220316672 1.026e-07 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      4396 days (12.04 yr)  
   first obs. used      2008-04-06  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 03:53:58  

Additional Information
 Earth MOID = 2.30734 au 
 Jupiter MOID = 1.61539 au 
 T_jup = 3.023 
[ 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 15.4   n/a MPO437721  

442500 (2011 WG2)          Discovered 2008-Apr-06 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

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