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390201 (2012 WZ31)
Classification: Main-belt Asteroid          SPK-ID: 2390201
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06885645155628738 5.7853e-08  
a 3.08997514103107 4.7582e-08 au
q 2.877210417422532 1.6893e-07 au
i 6.52433039070997 8.9836e-06 deg
node 212.7308604454423 4.7254e-05 deg
peri 286.2541170761836 8.0625e-05 deg
M 74.18275289658158 6.4416e-05 deg
tp 2458591.680737722443
(2019-Apr-18.18073772)		 0.00035632 TDB
period 1983.950833222615
5.43		 4.5825e-05
1.255e-07		 d
yr
n .1814561096835433 4.1913e-09 deg/d
Q 3.302739864639608 5.0858e-08 au
   Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      5019 days (13.74 yr)  
   first obs. used      2006-09-26  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58769  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:42:58  

Additional Information
 Earth MOID = 1.8989 au 
 Jupiter MOID = 1.74777 au 
 T_jup = 3.212 
[ 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 16.4   n/a MPO427945  

390201 (2012 WZ31)          Discovered 2006-Sep-26 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 2012 WZ31 = 2006 SX256 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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