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312387 (2008 EX138)
Classification: Main-belt Asteroid          SPK-ID: 2312387
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06608555413080305 8.1091e-08  
a 3.107733940083407 4.8398e-08 au
q 2.902357620561891 2.7669e-07 au
i 9.720510869754481 9.2219e-06 deg
node 210.482991892407 3.2994e-05 deg
peri 43.94425132620256 7.4926e-05 deg
M 24.11545179878865 6.5209e-05 deg
tp 2458866.453007324834
(2020-Jan-17.95300732)		 0.00036161 TDB
period 2001.078717732496
5.48		 4.6745e-05
1.28e-07		 d
yr
n .1799029677392855 4.2025e-09 deg/d
Q 3.313110259604923 5.1596e-08 au
   Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      5814 days (15.92 yr)  
   first obs. used      2003-05-25  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60388  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:45:56  

Additional Information
 Earth MOID = 1.89798 au 
 Jupiter MOID = 1.70712 au 
 T_jup = 3.194 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO437379  

312387 (2008 EX138)          Discovered 2008-Mar-11 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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Alternate Designations
 2008 EX138 = 2005 UJ259 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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