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JPL Small-Body Database Browser
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441853 (2009 WD71)
Classification: Main-belt Asteroid          SPK-ID: 2441853
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2064924251996827 1.198e-07  
a 2.167913512661285 4.6852e-08 au
q 1.720255793808693 2.9112e-07 au
i 4.53094246983072 7.3936e-06 deg
node 71.14985439296778 0.00011884 deg
peri 289.6463651247627 0.00013492 deg
M 147.9274421392108 6.8229e-05 deg
tp 2458521.420483683189
(2019-Feb-06.92048368)
0.00020706 TDB
period 1165.90014252897
3.19
3.7796e-05
1.035e-07
d
yr
n .3087742996746866 1.001e-08 deg/d
Q 2.615571231513876 5.6527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      68  
   data-arc span      4805 days (13.16 yr)  
   first obs. used      2006-12-01  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58862  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:37:56  

Additional Information
 Earth MOID = .724007 au 
 Jupiter MOID = 2.84415 au 
 T_jup = 3.659 
[ 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 18.7   n/a MPO353528  

441853 (2009 WD71)          Discovered 2009-Nov-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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