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29473 Krejci (1997 UE8)
Classification: Main-belt Asteroid          SPK-ID: 2029473
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09583740656370081 4.8403e-08  
a 2.740102591549591 1.235e-08 au
q 2.477498265457003 1.3573e-07 au
i 1.538407058909232 4.4366e-06 deg
node 48.27026385353998 0.00018915 deg
peri 291.8542494649441 0.00019054 deg
M 45.45610715668186 2.2397e-05 deg
tp 2458791.311213094377
(2019-Nov-03.81121309)
0.00010294 TDB
period 1656.718271682317
4.54
1.12e-05
3.066e-08
d
yr
n .2172970541541969 1.469e-09 deg/d
Q 3.00270691764218 1.3533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      810  
   data-arc span      10754 days (29.44 yr)  
   first obs. used      1991-06-03  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:32:14  

Additional Information
 Earth MOID = 1.46927 au 
 Jupiter MOID = 2.32961 au 
 T_jup = 3.343 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456804.5 (2014-May-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09842756207786658 4.8498e-08  
q 2.470506896743391 1.365e-07 au
tp 2457134.437890871627
(2015-Apr-21.93789087)
9.9089e-05 TDB
node 48.28779695401804 0.00018878 deg
peri 291.9638018090619 0.00019008 deg
i 1.541490878243923 4.4394e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      810  
   data-arc span      10754 days (29.44 yr)  
   first obs. used      1991-06-03  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:32:14  

Additional Information
 Jupiter MOID = 2.32961 au 
 T_jup = 3.343 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.352093048307282E-15 -6.599187593248344E-15 3.365826551523915E-14 7.084303997877309E-15 -1.064090978401494E-14 -9.445211425761034E-16
q -6.599187593248344E-15 1.86331065612391E-14 -1.176996504538977E-13 -2.095432994785461E-14 1.862496411779833E-14 2.671301242264694E-15
tp 3.365826551523915E-14 -1.176996504538977E-13 9.818546172194599E-9 9.013703304550067E-12 2.233653968183926E-9 2.830652752344606E-13
node 7.084303997877309E-15 -2.095432994785461E-14 9.013703304550067E-12 3.563620318852621E-8 -3.562097001707635E-8 -1.414161529209581E-10
peri -1.064090978401494E-14 1.862496411779833E-14 2.233653968183926E-9 -3.562097001707635E-8 3.612986298518299E-8 1.414349563765828E-10
i -9.445211425761034E-16 2.671301242264694E-15 2.830652752344606E-13 -1.414161529209581E-10 1.414349563765828E-10 1.970846532273012E-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 15.3   n/a MPO351031  

29473 Krejčí           Discovered 1997 Oct. 21 by P. Pravec and L. Šarounová at Ondřejov.
František Krejčí (1901-1984), an honorary member of the Czechoslovak Astronomical Society, in 1963 founded the public observatory in Karlovy Vary and led it for 20 years, including its rebuilding after a disastrous fire in 1971. He operated an all-sky patrol camera for the European fireball network.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1997 UE8 = 2000 HF9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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