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91024 Szechenyi (1998 DA33)
Classification: Main-belt Asteroid          SPK-ID: 2091024
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0642091457878121 4.0685e-08  
a 2.663273538368914 1.1841e-08 au
q 2.492267019470962 1.0757e-07 au
i 4.638047548117575 4.5679e-06 deg
node 5.500922289732896 4.9541e-05 deg
peri 204.9255764353346 6.1577e-05 deg
M 72.91631437637228 3.5337e-05 deg
tp 2458878.953122980876
(2020-Jan-30.45312298)
0.00015599 TDB
period 1587.53053712208
4.35
1.0587e-05
2.899e-08
d
yr
n .226767291451677 1.5123e-09 deg/d
Q 2.834280057266866 1.2601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1048  
   data-arc span      13791 days (37.76 yr)  
   first obs. used      1982-11-05  
   last obs. used      2020-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:43:06  

Additional Information
 Earth MOID = 1.48684 au 
 Jupiter MOID = 2.13006 au 
 T_jup = 3.377 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457065.5 (2015-Feb-12.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06436523127586247 4.0619e-08  
q 2.491459887720634 1.0758e-07 au
tp 2457286.139925378517
(2015-Sep-20.63992538)
0.00015632 TDB
node 5.557098466321992 4.9553e-05 deg
peri 203.3169673765332 6.1528e-05 deg
i 4.638086875947116 4.5669e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1048  
   data-arc span      13791 days (37.76 yr)  
   first obs. used      1982-11-05  
   last obs. used      2020-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:43:06  

Additional Information
 Jupiter MOID = 2.13006 au 
 T_jup = 3.377 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.649907077807013E-15 -4.346463001621879E-15 -5.062191715576654E-13 1.325073382785785E-15 -6.869364315462671E-14 -1.958774748851846E-15
q -4.346463001621879E-15 1.157334926980445E-14 1.168240706048858E-12 -3.985620852704258E-15 1.373394681017352E-13 5.206574797929192E-15
tp -5.062191715576654E-13 1.168240706048858E-12 2.443591665879013E-8 5.230296926346445E-11 5.714658166150924E-9 5.556367339065746E-12
node 1.325073382785785E-15 -3.985620852704258E-15 5.230296926346445E-11 2.455520149904603E-9 -2.434557363296935E-9 -3.079574608305879E-11
peri -6.869364315462671E-14 1.373394681017352E-13 5.714658166150924E-9 -2.434557363296935E-9 3.785683304871172E-9 3.194402976605529E-11
i -1.958774748851846E-15 5.206574797929192E-15 5.556367339065746E-12 -3.079574608305879E-11 3.194402976605529E-11 2.085676751623551E-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 15.24   n/a E2021B10  
diameter diameter 2.997 km 0.830 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91024 Széchenyi           Discovered 1998 Feb. 28 by K. Sárneczky and L. Kiss at Piszkéstető.
Count István Széchenyi (1791-1860), known as "The Greatest Hungarian", was a writer, reformer and patriot. In addition to promoting the first permanent bridge between Buda and Pest, he became famous for donating a year's income toward the foundation of the Hungarian Academy of Sciences.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05

[ show close-approach data ]
Alternate Designations
 1998 DA33 = 1995 SJ49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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