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312390 (2008 ER147)
Classification: Main-belt Asteroid          SPK-ID: 2312390
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03619147352205419 5.0371e-08  
a 2.760835133374442 2.9327e-08 au
q 2.660916441746164 1.4212e-07 au
i 6.341990680958123 6.84e-06 deg
node 172.2499676655645 4.5234e-05 deg
peri 248.7405680584598 0.00010441 deg
M 355.6089417273511 9.1959e-05 deg
tp 2459020.937408994606
(2020-Jun-20.43740899)
0.00042799 TDB
period 1675.556729430437
4.59
2.6698e-05
7.31e-08
d
yr
n .2148539608816306 3.4235e-09 deg/d
Q 2.86075382500272 3.0389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      186  
   data-arc span      6091 days (16.68 yr)  
   first obs. used      2003-02-22  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58727  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:10:44  

Additional Information
 Earth MOID = 1.68008 au 
 Jupiter MOID = 2.2488 au 
 T_jup = 3.332 
[ 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 16.5   n/a MPO494656  

312390 (2008 ER147)          Discovered 2008-Mar-01 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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