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JPL Small-Body Database Browser
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442504 (2011 WA20)
Classification: Main-belt Asteroid          SPK-ID: 2442504
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0481381070287619 1.3277e-07  
a 3.182615248240397 2.3193e-07 au
q 3.029410174789231 3.0122e-07 au
i 8.46094153055358 9.4885e-06 deg
node 248.720664608008 5.6112e-05 deg
peri 350.1369521779342 0.00015348 deg
M 300.1553979856412 0.0001148 deg
tp 2458945.244318846198
(2020-Apr-05.74431885)
0.00064009 TDB
period 2073.837081494055
5.68
0.0002267
6.207e-07
d
yr
n .1735912638521465 1.8976e-08 deg/d
Q 3.335820321691563 2.431e-07 au
  Orbit Determination Parameters
   # obs. used (total)      69  
   data-arc span      4024 days (11.02 yr)  
   first obs. used      2005-10-27  
   last obs. used      2016-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64605  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:28:00  

Additional Information
 Earth MOID = 2.01698 au 
 Jupiter MOID = 1.68867 au 
 T_jup = 3.180 
[ 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 16.4   n/a MPO392192  

442504 (2011 WA20)          Discovered 2011-Nov-17 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 WA20 = 2011 WV156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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