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JPL Small-Body Database Browser
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423155 (2004 EN81)
Classification: Main-belt Asteroid          SPK-ID: 2423155
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2004722138990411 8.7504e-08  
a 2.353853883593936 2.3035e-08 au
q 1.881971584355004 1.9423e-07 au
i 6.492360437022506 6.4612e-06 deg
node 62.90888859400267 4.5617e-05 deg
peri 149.4228926902242 4.8559e-05 deg
M 149.9872748411196 1.6252e-05 deg
tp 2458450.934335822639
(2018-Nov-28.43433582)
5.5084e-05 TDB
period 1319.069496485112
3.61
1.9363e-05
5.301e-08
d
yr
n .2729196611393728 4.0062e-09 deg/d
Q 2.825736182832868 2.7653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      5636 days (15.43 yr)  
   first obs. used      2004-03-15  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57529  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:30:06  

Additional Information
 Earth MOID = .878799 au 
 Jupiter MOID = 2.14485 au 
 T_jup = 3.520 
[ 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 17.6   n/a MPO434531  

423155 (2004 EN81)          Discovered 2004-Mar-15 by LINEAR at Socorro
Reference: Last Updated: 2015-02-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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