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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03405337999939011 5.918e-08  
a 3.067967937959074 3.7515e-08 au
q 2.963493259941808 1.7202e-07 au
i 10.35660872367327 6.8127e-06 deg
node 344.1456224219202 3.4873e-05 deg
peri 131.4133751318417 0.00010749 deg
M 155.2036807958255 0.00010128 deg
tp 2458154.297765427021
(2018-Feb-04.79776543)
0.00055063 TDB
period 1962.793684300728
5.37
3.6002e-05
9.857e-08
d
yr
n .1834120431910066 3.3642e-09 deg/d
Q 3.172442615976339 3.8793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   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      .52042  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:01  

Additional Information
 Earth MOID = 1.98878 au 
 Jupiter MOID = 1.84908 au 
 T_jup = 3.206 
[ 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 15.6   n/a MPO471208  

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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