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100026 (1990 ST9)
Classification: Main-belt Asteroid          SPK-ID: 2100026
[ 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1855175584297356 4.1223e-08  
a 2.424478635196707 8.5044e-09 au
q 1.974695278329956 1.0151e-07 au
i 3.077999458753434 3.768e-06 deg
node 49.41531260894143 8.4616e-05 deg
peri 268.1255118231184 8.5283e-05 deg
M 340.9234769152886 9.7709e-06 deg
tp 2459073.567237944558
(2020-Aug-12.06723794)		 3.7382e-05 TDB
period 1378.878401647632
3.78		 7.2551e-06
1.986e-08		 d
yr
n .261081760052107 1.3737e-09 deg/d
Q 2.874261992063458 1.0082e-08 au
   Orbit Determination Parameters
   # obs. used (total)      782  
   data-arc span      10919 days (29.89 yr)  
   first obs. used      1990-09-14  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5455  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:01:48  

Additional Information
 Earth MOID = .964332 au 
 Jupiter MOID = 2.42591 au 
 T_jup = 3.486 
[ 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 15.7   n/a MPO325151  

100026 (1990 ST9)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1990 ST9 = 2004 EN32 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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