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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1422437506629331 6.4739e-08  
a 2.667531345993844 1.698e-08 au
q 2.288091682328738 1.7593e-07 au
i 12.02331320835854 5.218e-06 deg
node 80.42444211727816 2.7704e-05 deg
peri 106.858995957485 3.1928e-05 deg
M 260.0940524692904 1.6453e-05 deg
tp 2459442.122880839166
(2021-Aug-15.62288084)
7.4331e-05 TDB
period 1591.339064706137
4.36
1.5194e-05
4.16e-08
d
yr
n .2262245727414974 2.16e-09 deg/d
Q 3.046971009658951 1.9395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      7649 days (20.94 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61354  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:43:50  

Additional Information
 Earth MOID = 1.32159 au 
 Jupiter MOID = 2.0192 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 15.2   n/a MPO412703  

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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