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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06475921451357727 8.1305e-08  
a 3.103367478358295 4.801e-08 au
q 2.902395838112831 2.7607e-07 au
i 9.730027447310707 9.2494e-06 deg
node 210.5442732275963 3.3209e-05 deg
peri 44.35468216929065 7.6318e-05 deg
M 311.6378891208717 6.6226e-05 deg
tp 2458868.756949383385
(2020-Jan-20.25694938)
0.00036897 TDB
period 1996.862833787026
5.47
4.6338e-05
1.269e-07
d
yr
n .1802827885364887 4.1835e-09 deg/d
Q 3.304339118603759 5.1119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   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      .61041  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:52:49  

Additional Information
 Earth MOID = 1.8979 au 
 Jupiter MOID = 1.71645 au 
 T_jup = 3.196 
[ 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

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