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JPL Small-Body Database Browser
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305499 (2008 EJ87)
Classification: Main-belt Asteroid          SPK-ID: 2305499
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03491280097471754 5.9722e-08  
a 3.063489089852583 3.7677e-08 au
q 2.956534104970341 1.7466e-07 au
i 10.35792636255741 6.8514e-06 deg
node 344.2269484397304 3.5226e-05 deg
peri 129.2532512718036 0.00010523 deg
M 83.83744070065629 9.8693e-05 deg
tp 2458144.401708661406
(2018-Jan-25.90170866)
0.00053611 TDB
period 1958.497104750101
5.36
3.613e-05
9.892e-08
d
yr
n .1838144152099397 3.391e-09 deg/d
Q 3.170444074734824 3.8992e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      6350 days (17.39 yr)  
   first obs. used      2001-12-19  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51457  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:08:18  

Additional Information
 Earth MOID = 1.98344 au 
 Jupiter MOID = 1.85653 au 
 T_jup = 3.207 
[ 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 15.5   n/a MPO437357  

305499 (2008 EJ87)          Discovered 2008-Mar-08 by CSS at Catalina
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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