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487557 (2014 WJ20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2487557
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .139282324146614 4.7384e-08  
a 3.208437538233829 4.7963e-08 au
q 2.761558901029381 1.4466e-07 au
i 5.600378828379146 5.726e-06 deg
node 248.2628314544296 9.4261e-05 deg
peri 13.09034401176336 0.00010128 deg
M 128.7986694862342 3.908e-05 deg
tp 2458249.486599780610
(2018-May-10.98659978)
0.00022298 TDB
period 2099.127461156552
5.75
4.707e-05
1.289e-07
d
yr
n .1714998286962772 3.8456e-09 deg/d
Q 3.655316175438279 5.4643e-08 au
  Orbit Determination Parameters
   # obs. used (total)      158  
   data-arc span      5790 days (15.85 yr)  
   first obs. used      2003-12-25  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57669  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 03:44:11  

Additional Information
 Earth MOID = 1.74651 au 
 Jupiter MOID = 1.41503 au 
 T_jup = 3.170 
[ 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 15.6   n/a MPO503657  

487557 (2014 WJ20)          Discovered 2006-May-31 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-03-14

[ show close-approach data ]
Alternate Designations
 2014 WJ20 = 2006 KC110 = 2012 LP3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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