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21682 Pestafrantisek (1999 RT32)
Classification: Main-belt Asteroid          SPK-ID: 2021682
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07849960034749932 3.5857e-08  
a 2.467114716934282 9.6201e-09 au
q 2.273447197643506 9.0138e-08 au
i 8.515939585567969 3.273e-06 deg
node 90.8021117447031 2.452e-05 deg
peri 109.0476359662461 3.1357e-05 deg
M 10.58192011165954 1.9864e-05 deg
tp 2459354.895105934224
(2021-May-20.39510593)
7.8105e-05 TDB
period 1415.410597097256
3.88
8.2787e-06
2.267e-08
d
yr
n .2543431571999625 1.4876e-09 deg/d
Q 2.660782236225057 1.0375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1416  
   data-arc span      12903 days (35.33 yr)  
   first obs. used      1986-03-04  
   last obs. used      2021-07-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4778  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:02:14  

Additional Information
 Earth MOID = 1.28665 au 
 Jupiter MOID = 2.33317 au 
 T_jup = 3.467 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457652.5 (2016-Sep-21.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0791798367153589 3.5907e-08  
q 2.271527454341474 9.0327e-08 au
tp 2457941.529309699206
(2017-Jul-07.02930970)
7.7958e-05 TDB
node 90.84299562812541 2.4532e-05 deg
peri 109.645084817921 3.1244e-05 deg
i 8.514374184562529 3.2721e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1416  
   data-arc span      12903 days (35.33 yr)  
   first obs. used      1986-03-04  
   last obs. used      2021-07-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4778  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:02:14  

Additional Information
 Jupiter MOID = 2.33317 au 
 T_jup = 3.467 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.289323003837282E-15 -3.22815397165148E-15 5.454928586136935E-15 1.620728082038251E-14 1.489232503207056E-14 -1.675520965035066E-15
q -3.22815397165148E-15 8.159033273742423E-15 -1.043389903612696E-13 -4.006729046206421E-14 -6.423693448969487E-14 4.268215089134224E-15
tp 5.454928586136935E-15 -1.043389903612696E-13 6.077486552181279E-9 8.140869604695489E-12 1.523865566117964E-9 3.609643034851721E-12
node 1.620728082038251E-14 -4.006729046206421E-14 8.140869604695489E-12 6.018198003962219E-10 -5.924892060701476E-10 -1.764315255742476E-11
peri 1.489232503207056E-14 -6.423693448969487E-14 1.523865566117964E-9 -5.924892060701476E-10 9.761964921568305E-10 1.830010649531569E-11
i -1.675520965035066E-15 4.268215089134224E-15 3.609643034851721E-12 -1.764315255742476E-11 1.830010649531569E-11 1.070693212742339E-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 15.15   n/a MPO636389  
diameter diameter 3.453 km 0.577 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.148   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21682 Peštafrantišek           Discovered 1999 Sept. 9 by P. Pravec and P. Kušnirák at Ondřejov.
František Pešta (1905-1982), founder of the public observatory in the town of Sezimovo Ústí that now bears his name, was a keen popularizer of astronomy. He studied archival records of the Strkov (near Tábor, Bohemia) meteorite shower in 1753.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 RT32 = 1998 HX122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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