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146718 (2001 WJ78)
Classification: Main-belt Asteroid          SPK-ID: 2146718
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03837335064445496 5.7605e-08  
a 2.694596042360485 2.4346e-08 au
q 2.591195363581825 1.6274e-07 au
i 6.997949141056571 5.0812e-06 deg
node 75.90520377928044 4.7887e-05 deg
peri 262.7291861777695 8.631e-05 deg
M 143.1031883391403 7.1037e-05 deg
tp 2458358.277173777390
(2018-Aug-27.77717378)
0.00032047 TDB
period 1615.618911943585
4.42
2.1896e-05
5.995e-08
d
yr
n .222824824182654 3.0199e-09 deg/d
Q 2.797996721139144 2.528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59013  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 19:26:23  

Additional Information
 Earth MOID = 1.59278 au 
 Jupiter MOID = 2.34488 au 
 T_jup = 3.359 
[ 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 16.3   n/a MPO453933  

146718 (2001 WJ78)          Discovered 2001-Nov-20 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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