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442749 (2012 WX20)
Classification: Main-belt Asteroid          SPK-ID: 2442749
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736507406184079 1.6945e-07  
a 2.440038369637254 4.7622e-08 au
q 2.016323899612412 4.0851e-07 au
i 2.326365660453105 1.5253e-05 deg
node 284.1999796348543 0.00025066 deg
peri 151.0834528053078 0.00025437 deg
M 340.9365362401814 4.8056e-05 deg
tp 2459074.221255494326
(2020-Aug-12.72125549)
0.00018738 TDB
period 1392.173652822573
3.81
4.0756e-05
1.116e-07
d
yr
n .2585884305956482 7.5703e-09 deg/d
Q 2.863752839662096 5.5892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      46  
   data-arc span      4494 days (12.30 yr)  
   first obs. used      2004-09-16  
   last obs. used      2017-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6346  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:25:39  

Additional Information
 Earth MOID = 1.03186 au 
 Jupiter MOID = 2.39378 au 
 T_jup = 3.480 
[ 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 18.2   n/a MPO495193  

442749 (2012 WX20)          Discovered 2008-Sep-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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