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JPL Small-Body Database Browser
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146720 (2001 WC87)
Classification: Main-belt Asteroid          SPK-ID: 2146720
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1753766325773444 3.6321e-08  
a 2.660898367688234 1.6692e-08 au
q 2.194238972332519 9.6505e-08 au
i 3.134299318273624 4.8937e-06 deg
node 313.6848489940013 0.00010307 deg
peri 159.3486564443396 0.00010476 deg
M 313.9671221453976 2.0903e-05 deg
tp 2458803.224614599720
(2019-Nov-15.72461460)
9.3038e-05 TDB
period 1585.407314450633
4.34
1.4918e-05
4.084e-08
d
yr
n .2270709846729484 2.1367e-09 deg/d
Q 3.127557763043948 1.962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      6323 days (17.31 yr)  
   first obs. used      2001-10-14  
   last obs. used      2019-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:30:51  

Additional Information
 Earth MOID = 1.21135 au 
 Jupiter MOID = 1.98268 au 
 T_jup = 3.361 
[ 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 15.9   n/a MPO453933  

146720 (2001 WC87)          Discovered 2001-Nov-19 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 WC87 = 2003 FH79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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