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442626 (2012 SH21)
Classification: Main-belt Asteroid          SPK-ID: 2442626
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147323399692934 8.7529e-08  
a 2.183215377109261 1.8104e-08 au
q 1.861576665491634 1.9304e-07 au
i 6.635922748532161 8.26e-06 deg
node 189.0507731642032 5.1566e-05 deg
peri 188.2645050086116 6.1603e-05 deg
M 142.0919017157887 3.3469e-05 deg
tp 2458535.438781465134
(2019-Feb-20.93878146)
0.00010601 TDB
period 1178.265873360103
3.23
1.4656e-05
4.013e-08
d
yr
n .3055337578210383 3.8004e-09 deg/d
Q 2.504854088726888 2.0771e-08 au
  Orbit Determination Parameters
   # obs. used (total)      179  
   data-arc span      7418 days (20.31 yr)  
   first obs. used      1999-10-11  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:59  

Additional Information
 Earth MOID = .863189 au 
 Jupiter MOID = 2.95568 au 
 T_jup = 3.656 
[ 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 18.2   n/a MPO349191  

442626 (2012 SH21)          Discovered 1999-Oct-11 by LINEAR at Socorro
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 SH21 = 1999 TA317 = 2001 FS241 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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