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390274 (2012 XE149)
Classification: Main-belt Asteroid          SPK-ID: 2390274
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 .04309401065811337 8.1945e-08  
a 2.783206729898469 3.7224e-08 au
q 2.663267189416492 2.516e-07 au
i 7.471410986089983 6.312e-06 deg
node 170.7907533026156 4.1264e-05 deg
peri 181.6649687825223 7.4749e-05 deg
M 299.6883631353846 6.1842e-05 deg
tp 2459284.628789032648
(2021-Mar-11.12878903)
0.00029194 TDB
period 1695.963985878227
4.64
3.4024e-05
9.315e-08
d
yr
n .2122686584135099 4.2585e-09 deg/d
Q 2.903146270380447 3.8828e-08 au
  Orbit Determination Parameters
   # obs. used (total)      154  
   data-arc span      5589 days (15.30 yr)  
   first obs. used      2005-04-01  
   last obs. used      2020-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6612  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:42:21  

Additional Information
 Earth MOID = 1.65727 au 
 Jupiter MOID = 2.28542 au 
 T_jup = 3.319 
[ 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 16.6   n/a MPO434437  

390274 (2012 XE149)          Discovered 2007-Oct-15 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-03-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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