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JPL Small-Body Database Browser
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441856 (2009 WD101)
Classification: Main-belt Asteroid          SPK-ID: 2441856
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05595721862777806 6.4893e-08  
a 2.379078058988267 2.7336e-08 au
q 2.24595146790891 1.5478e-07 au
i 7.585651622696955 6.7257e-06 deg
node 77.08185883718221 5.0655e-05 deg
peri 75.40697782223567 7.7209e-05 deg
M 119.1778315358262 5.9425e-05 deg
tp 2458156.784660499039
(2018-Feb-07.28466050)
0.00021904 TDB
period 1340.329154859032
3.67
2.3101e-05
6.325e-08
d
yr
n .2685907403378557 4.6292e-09 deg/d
Q 2.512204650067623 2.8865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      95  
   data-arc span      3594 days (9.84 yr)  
   first obs. used      2009-10-25  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64839  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:29  

Additional Information
 Earth MOID = 1.27152 au 
 Jupiter MOID = 2.49438 au 
 T_jup = 3.526 
[ 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 17.4   n/a MPO437717  

441856 (2009 WD101)          Discovered 2009-Oct-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2009 WD101 = 2011 HC17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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