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438661 (2008 EP6)
Classification: Apollo [NEO, PHA]          SPK-ID: 2438661
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2932631704713961 4.5776e-08  
a 1.209043241866031 5.1332e-09 au
q .8544753875193837 5.8521e-08 au
i 17.72318874157365 1.541e-05 deg
node 303.2514571492549 1.3644e-05 deg
peri 130.3139599196029 1.4352e-05 deg
M 125.5773461703185 1.1541e-05 deg
tp 2458831.116938695637
(2019-Dec-13.61693870)
1.4561e-05 TDB
period 485.5804325317347
1.33
3.0924e-06
8.467e-09
d
yr
n .7413807803642757 4.7215e-09 deg/d
Q 1.563611096212678 6.6386e-09 au
  Orbit Determination Parameters
   # obs. used (total)      159  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      4194 days (11.48 yr)  
   first obs. used      2008-03-05  
   last obs. used      2019-08-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .29657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-09 06:14:07  

Additional Information
 Earth MOID = .0474178 au 
 Jupiter MOID = 3.70261 au 
 T_jup = 5.182 
[ 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 19.3   n/a MPO495173  

438661 (2008 EP6)          Discovered 2008-Mar-05 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2015-07-06

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