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JPL Small-Body Database Browser
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109902 (2001 SH21)
Classification: Main-belt Asteroid          SPK-ID: 2109902
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0501446496675788 4.1894e-08  
a 2.553600845006372 1.1676e-08 au
q 2.425551425242694 1.0847e-07 au
i 4.604870324936438 4.7891e-06 deg
node 117.0053447432398 5.5372e-05 deg
peri 258.5634772439213 7.3157e-05 deg
M 109.5853122423937 4.7555e-05 deg
tp 2458146.790580709633
(2018-Jan-28.29058071)
0.00019641 TDB
period 1490.486157335095
4.08
1.0223e-05
2.799e-08
d
yr
n .2415319311946242 1.6566e-09 deg/d
Q 2.68165026477005 1.2262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      10208 days (27.95 yr)  
   first obs. used      1991-02-22  
   last obs. used      2019-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59144  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:53:20  

Additional Information
 Earth MOID = 1.42991 au 
 Jupiter MOID = 2.53695 au 
 T_jup = 3.432 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456463.5 (2013-Jun-20.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04859997274783896 4.1825e-08  
q 2.429578071456535 1.0811e-07 au
tp 2456651.897057048425
(2013-Dec-25.39705705)
0.00020197 TDB
node 117.043638719648 5.5314e-05 deg
peri 257.6127515235681 7.4179e-05 deg
i 4.606499545025145 4.7916e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      10208 days (27.95 yr)  
   first obs. used      1991-02-22  
   last obs. used      2019-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59144  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:53:20  

Additional Information
 Jupiter MOID = 2.53695 au 
 T_jup = 3.432 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.749367732849663E-15 -4.497938375662631E-15 -1.937193608886298E-12 2.052240146860823E-14 -5.108042943622645E-13 -6.355254610775109E-16
q -4.497938375662631E-15 1.168685613366045E-14 5.177812464805791E-12 -5.394753980757281E-14 1.357084641037723E-12 1.788404421685614E-15
tp -1.937193608886298E-12 5.177812464805791E-12 4.079054690201833E-8 -4.920869823839325E-11 1.000088466279543E-8 6.633636743120049E-12
node 2.052240146860823E-14 -5.394753980757281E-14 -4.920869823839325E-11 3.059596401145007E-9 -3.061537114385552E-9 4.277241258278838E-11
peri -5.108042943622645E-13 1.357084641037723E-12 1.000088466279543E-8 -3.061537114385552E-9 5.502597188763739E-9 -4.102280743935642E-11
i -6.355254610775109E-16 1.788404421685614E-15 6.633636743120049E-12 4.277241258278838E-11 -4.102280743935642E-11 2.29590108446456E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO268016  

109902 (2001 SH21)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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