+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   233472 Moorcroft (2006 KB143) Classification: Main-belt Asteroid          SPK-ID: 2233472 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06247155591122946 4.7824e-08   a 2.965311000440529 3.1199e-08 au q 2.780063408482325 1.4096e-07 au i 1.737040639455405 4.9576e-06 deg node 62.89208350756633 0.00021511 deg peri 316.1533636142251 0.00022079 deg M 176.3120116872653 5.0474e-05 deg tp 2458287.053323848568 (2018-Jun-17.55332385) 0.00025995 TDB period 1865.107205502251 5.11 2.9435e-05 8.059e-08 d yr n .193018395370499 3.0462e-09 deg/d Q 3.150558592398733 3.3148e-08 au   Orbit Determination Parameters    # obs. used (total)      219      data-arc span      6387 days (17.49 yr)      first obs. used      2002-08-20      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62409      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 01:53:18   Additional Information  Earth MOID = 1.78083 au   Jupiter MOID = 2.17019 au   T_jup = 3.261  [ 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 16.58   n/a E2021B55   233472 Moorcroft           Discovered 2006 May 25 by P. A. Wiegert at Mauna Kea. Donald Ross Moorcroft (b. 1935) is a Canadian physicist who did much to advance the field of radar backscatter from the auroral E-region ionosphere. He was the Chair of the Department of Physics of the University of Western Ontario from 1989 to 1998. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2013-04-25 Last Updated: 2013-04-29 [ show close-approach data ] Alternate Designations  2006 KB143 = 2005 FL13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 15:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin