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90684 (1981 EY6)
Classification: Main-belt Asteroid          SPK-ID: 2090684
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .151626266835165 3.7606e-08  
a 2.993198352339329 1.7412e-08 au
q 2.539350860276949 1.1441e-07 au
i 10.49971604880008 5.5802e-06 deg
node 307.2732787876231 2.3511e-05 deg
peri 85.02838977667905 3.0953e-05 deg
M 68.81940086065691 1.8394e-05 deg
tp 2459034.915288252110
(2020-Jul-04.41528825)
9.6718e-05 TDB
period 1891.47964965294
5.18
1.6505e-05
4.519e-08
d
yr
n .1903271864786148 1.6608e-09 deg/d
Q 3.447045844401709 2.0053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      14689 days (40.22 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:38:48  

Additional Information
 Earth MOID = 1.57118 au 
 Jupiter MOID = 2.11698 au 
 T_jup = 3.213 
[ 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 14.24   n/a MPCxxxxx  

90684 (1981 EY6)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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