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90509 (2004 EN18)
Classification: Main-belt Asteroid          SPK-ID: 2090509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1420281912877916 5.5901e-08  
a 2.667609596202186 1.5445e-08 au
q 2.288733830191633 1.5597e-07 au
i 12.02179320584463 4.0231e-06 deg
node 80.41860772545402 2.0704e-05 deg
peri 106.7982066072064 2.5039e-05 deg
M 349.7140353708287 1.3502e-05 deg
tp 2459441.969937705905
(2021-Aug-15.46993771)
5.9791e-05 TDB
period 1591.409086484925
4.36
1.3821e-05
3.784e-08
d
yr
n .2262146188917152 1.9646e-09 deg/d
Q 3.046485362212738 1.7638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-12-17  
   last obs. used      2021-05-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:38:20  

Additional Information
 Earth MOID = 1.32297 au 
 Jupiter MOID = 2.01763 au 
 T_jup = 3.337 
[ 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 15.31   n/a MPCxxxxx  

90509 (2004 EN18)          Discovered 2004-Mar-13 by NEAT at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 2004 EN18 = 2000 JU83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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