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JPL Small-Body Database Browser
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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1855175751058835 4.3622e-08  
a 2.424478628221489 1.7161e-08 au
q 1.9746952322178 1.0408e-07 au
i 3.077997845596038 5.1641e-06 deg
node 49.41533702378899 9.0822e-05 deg
peri 268.1254675240388 9.2809e-05 deg
M 340.9234975595346 2.6945e-05 deg
tp 2459073.567158557279
(2020-Aug-12.06715856)		 0.00010382 TDB
period 1378.878395697088
3.78		 1.464e-05
4.008e-08		 d
yr
n .2610817611788043 2.772e-09 deg/d
Q 2.874262024225179 2.0345e-08 au
   Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      10436 days (28.57 yr)  
   first obs. used      1990-09-14  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56854  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:59:38  

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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