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21945 Kleshchonok (1999 VL135)
Classification: Main-belt Asteroid          SPK-ID: 2021945
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091485135190037 2.8623e-08  
a 2.297918718415624 6.7558e-09 au
q 2.047104306113065 6.6309e-08 au
i 5.551449487792949 2.9515e-06 deg
node 118.0366879924385 3.7792e-05 deg
peri 56.14692416754539 4.1396e-05 deg
M 257.6175298922756 1.7497e-05 deg
tp 2459562.345789614531
(2021-Dec-13.84578961)
6.2487e-05 TDB
period 1272.331915064853
3.48
5.6109e-06
1.536e-08
d
yr
n .2829450363835683 1.2478e-09 deg/d
Q 2.548733130718183 7.4932e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1848  
   data-arc span      11371 days (31.13 yr)  
   first obs. used      1990-01-24  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:56:09  

Additional Information
 Earth MOID = 1.05819 au 
 Jupiter MOID = 2.42256 au 
 T_jup = 3.579 
[ show covariance matrix ]

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 14.79   n/a E2021B10  

21945 Kleshchonok           Discovered 1999 Nov. 13 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Valery Volodymyrovich Kleshchonok (b. 1959), of the Department of Astrometry at the Astronomical Observatory of Kyiv Shevchenko National University, undertakes photometric and spectroscopic research on comets and minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

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Alternate Designations
 1999 VL135 = 1990 BE4 = 1994 GF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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