+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 ] [ show orbit diagram ] 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.arc Last Updated: 2008-07-18 [ show close-approach data ] Alternate Designations  1999 VL135 = 1990 BE4 = 1994 GF1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 12:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin