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305847 (2009 EJ4)
Classification: Main-belt Asteroid          SPK-ID: 2305847
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1763622721334498 4.0528e-08  
a 2.314694409804461 1.6029e-08 au
q 1.906469644396752 9.6219e-08 au
i 2.872712286515414 4.2795e-06 deg
node 106.5607542639738 0.00011845 deg
peri 15.58693769379319 0.00011969 deg
M 105.1746391113129 1.7285e-05 deg
tp 2458624.708068941915
(2019-May-21.20806894)
6.1156e-05 TDB
period 1286.290082134058
3.52
1.3361e-05
3.658e-08
d
yr
n .2798746604675138 2.9072e-09 deg/d
Q 2.722919175212171 1.8856e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      6142 days (16.82 yr)  
   first obs. used      2002-03-10  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:03:07  

Additional Information
 Earth MOID = .922457 au 
 Jupiter MOID = 2.34987 au 
 T_jup = 3.559 
[ 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 17.6   n/a MPO418595  

305847 (2009 EJ4)          Discovered 2009-Mar-15 by La Sagra at La Sagra
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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