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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03815124732083087 5.8557e-08  
a 2.694292983478884 2.4736e-08 au
q 2.591502345511402 1.6529e-07 au
i 6.998516759237753 5.2466e-06 deg
node 75.90621017800913 4.8372e-05 deg
peri 262.5016974475298 8.919e-05 deg
M 54.22074706539274 7.4678e-05 deg
tp 2458357.207537946907
(2018-Aug-26.70753795)
0.00033566 TDB
period 1615.346358719136
4.42
2.2245e-05
6.09e-08
d
yr
n .2228624208404794 3.0691e-09 deg/d
Q 2.797083621446367 2.5679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      7120 days (19.49 yr)  
   first obs. used      1999-03-20  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60808  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 11:40:23  

Additional Information
 Earth MOID = 1.59212 au 
 Jupiter MOID = 2.34493 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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