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21046 (1990 SH3)
Classification: Main-belt Asteroid          SPK-ID: 2021046
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2738177610606198 3.1929e-08  
a 3.054647650861637 1.4096e-08 au
q 2.218230870273622 9.9016e-08 au
i 5.569493859820406 3.8443e-06 deg
node 85.36165643498798 4.2626e-05 deg
peri 255.1357646514164 4.3277e-05 deg
M 278.1849167887948 8.8308e-06 deg
tp 2459839.670645270396
(2022-Sep-17.17064527)
4.9282e-05 TDB
period 1950.024690257751
5.34
1.3498e-05
3.696e-08
d
yr
n .1846130471057861 1.2778e-09 deg/d
Q 3.891064431449653 1.7955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      15350 days (42.03 yr)  
   first obs. used      1979-07-20  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48186  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:48  

Additional Information
 Earth MOID = 1.21696 au 
 Jupiter MOID = 1.55471 au 
 T_jup = 3.170 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457469.5 (2016-Mar-22.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2722671813630561 3.194e-08  
q 2.224577739030224 9.9009e-08 au
tp 2457888.110110898862
(2017-May-14.61011090)
4.4484e-05 TDB
node 85.37983409622946 4.2606e-05 deg
peri 255.1412002483645 4.3265e-05 deg
i 5.568728350183064 3.8436e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      15350 days (42.03 yr)  
   first obs. used      1979-07-20  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48186  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:48  

Additional Information
 Jupiter MOID = 1.55471 au 
 T_jup = 3.170 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.020171789568046E-15 -3.145488654247374E-15 6.34015287918179E-13 -1.996760528162089E-15 1.16986392476804E-13 -4.734275786224353E-16
q -3.145488654247374E-15 9.802795581293083E-15 -1.82381791751207E-12 8.244737802734465E-17 -3.358639384478655E-13 2.374523060512659E-15
tp 6.34015287918179E-13 -1.82381791751207E-12 1.978796129608745E-9 1.058747373941488E-12 3.621742959815114E-10 -1.182631696315983E-12
node -1.996760528162089E-15 8.244737802734465E-17 1.058747373941488E-12 1.815276616718864E-9 -1.806544748727687E-9 -6.783128044441191E-11
peri 1.16986392476804E-13 -3.358639384478655E-13 3.621742959815114E-10 -1.806544748727687E-9 1.871890735381396E-9 6.733189758832464E-11
i -4.734275786224353E-16 2.374523060512659E-15 -1.182631696315983E-12 -6.783128044441191E-11 6.733189758832464E-11 1.47731114350105E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.85   n/a MPO636380  
diameter diameter 8.642 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21046 (1990 SH3)          Discovered 1990-Sep-18 by Holt, H. E. at Palomar
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1990 SH3 = 1979 OS13 = 1979 PH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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