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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07849960001853111 3.5859e-08  
a 2.467114717169615 9.6223e-09 au
q 2.273447198671969 9.0143e-08 au
i 8.515939520085466 3.2739e-06 deg
node 90.80211146785506 2.4522e-05 deg
peri 109.0476367980666 3.1363e-05 deg
M 10.58191942211576 1.9875e-05 deg
tp 2459354.895108639347
(2021-May-20.39510864)
7.8147e-05 TDB
period 1415.410597299775
3.88
8.2807e-06
2.267e-08
d
yr
n .2543431571635705 1.488e-09 deg/d
Q 2.660782235667262 1.0378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1412  
   data-arc span      12885 days (35.28 yr)  
   first obs. used      1986-03-04  
   last obs. used      2021-06-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47724  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:10:33  

Additional Information
 Earth MOID = 1.28665 au 
 Jupiter MOID = 2.33317 au 
 T_jup = 3.467 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457650.5 (2016-Sep-19.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07917912884631426 3.5909e-08  
q 2.271526709106054 9.0332e-08 au
tp 2457941.531663223546
(2017-Jul-07.03166322)
7.7995e-05 TDB
node 90.84301085790123 2.4534e-05 deg
peri 109.6457299338621 3.125e-05 deg
i 8.514378635640801 3.273e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1412  
   data-arc span      12885 days (35.28 yr)  
   first obs. used      1986-03-04  
   last obs. used      2021-06-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47724  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:10:33  

Additional Information
 Jupiter MOID = 2.33317 au 
 T_jup = 3.467 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.289421005993943E-15 -3.228429231142358E-15 4.69813874546135E-15 1.620348691287196E-14 1.472501090792154E-14 -1.677164597173109E-15
q -3.228429231142358E-15 8.159827905018426E-15 -1.020066022789515E-13 -4.005979831373218E-14 -6.37186022996727E-14 4.273171220621658E-15
tp 4.69813874546135E-15 -1.020066022789515E-13 6.083146514994072E-9 8.154276480390881E-12 1.525117553886417E-9 3.618080002010554E-12
node 1.620348691287196E-14 -4.005979831373218E-14 8.154276480390881E-12 6.019139456022886E-10 -5.925788891959462E-10 -1.761979447380515E-11
peri 1.472501090792154E-14 -6.37186022996727E-14 1.525117553886417E-9 -5.925788891959462E-10 9.765648410572111E-10 1.827892260764719E-11
i -1.677164597173109E-15 4.273171220621658E-15 3.618080002010554E-12 -1.761979447380515E-11 1.827892260764719E-11 1.071269490082217E-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 15.13   n/a MPCxxxxx  
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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