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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1471268240970801 1.1346e-07  
a 2.183392287789062 2.2107e-08 au
q 1.8621567147286 2.5623e-07 au
i 6.635598428492034 1.2898e-05 deg
node 189.0603766161075 5.1734e-05 deg
peri 188.3025138410864 6.2071e-05 deg
M 19.8600523538333 3.3918e-05 deg
tp 2458535.490927028497
(2019-Feb-20.99092703)
0.00011041 TDB
period 1178.409092422352
3.23
1.7897e-05
4.9e-08
d
yr
n .3054966244871546 4.6397e-09 deg/d
Q 2.504627860849525 2.5359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      6368 days (17.43 yr)  
   first obs. used      1999-10-11  
   last obs. used      2017-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5934  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:26:51  

Additional Information
 Earth MOID = .862985 au 
 Jupiter MOID = 2.95293 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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