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JPL Small-Body Database Browser
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447303 (2005 WR138)
Classification: Main-belt Asteroid          SPK-ID: 2447303
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370666527096168 5.4873e-08  
a 2.253868824678949 2.2725e-08 au
q 1.944938569233648 1.3299e-07 au
i 4.856876634257099 5.6884e-06 deg
node 254.3546642221867 7.3398e-05 deg
peri 78.10787984737847 8.2264e-05 deg
M 66.4811733473402 2.9335e-05 deg
tp 2458372.262208309691
(2018-Sep-10.76220831)
0.00010255 TDB
period 1235.922906763776
3.38
1.8692e-05
5.118e-08
d
yr
n .2912803039978022 4.4053e-09 deg/d
Q 2.562799080124251 2.584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      4721 days (12.93 yr)  
   first obs. used      2005-10-28  
   last obs. used      2018-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59658  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:38:08  

Additional Information
 Earth MOID = .940512 au 
 Jupiter MOID = 2.76374 au 
 T_jup = 3.608 
[ 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 18.1   n/a MPO456119  

447303 (2005 WR138)          Discovered 2005-Nov-26 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-10-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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