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JPL Small-Body Database Browser
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146712 (2001 WQ20)
Classification: Main-belt Asteroid          SPK-ID: 2146712
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07188973552248804 4.1231e-08  
a 2.734929286487902 1.5778e-08 au
q 2.53831594340958 1.1752e-07 au
i 10.62066507613354 4.5726e-06 deg
node 78.84240178288044 2.3943e-05 deg
peri .3497180311954579 4.0967e-05 deg
M 289.1805570107085 3.2823e-05 deg
tp 2458925.488194756542
(2020-Mar-16.98819476)
0.00015132 TDB
period 1652.02866859664
4.52
1.4296e-05
3.914e-08
d
yr
n .2179138938949599 1.8857e-09 deg/d
Q 2.931542629566225 1.6912e-08 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      6643 days (18.19 yr)  
   first obs. used      2001-09-17  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52761  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:00:49  

Additional Information
 Earth MOID = 1.55377 au 
 Jupiter MOID = 2.28575 au 
 T_jup = 3.324 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO449800  

146712 (2001 WQ20)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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