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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372980688574897 4.9634e-08  
a 2.253715357971003 1.6358e-08 au
q 1.944284591567118 1.1526e-07 au
i 4.856646437605477 4.8853e-06 deg
node 254.3521744619289 6.4691e-05 deg
peri 78.13712719569567 6.7607e-05 deg
M 182.9462163082116 1.8113e-05 deg
tp 2459608.284659964123
(2022-Jan-28.78465996)
6.3394e-05 TDB
period 1235.796677285198
3.38
1.3455e-05
3.684e-08
d
yr
n .2913100565951101 3.1717e-09 deg/d
Q 2.563146124374887 1.8604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      5204 days (14.25 yr)  
   first obs. used      2005-10-28  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 11:08:54  

Additional Information
 Earth MOID = .940767 au 
 Jupiter MOID = 2.7658 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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