+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16797 Wilkerson (1997 CA17) Classification: Main-belt Asteroid          SPK-ID: 2016797 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1514078592382462 3.201e-08   a 3.194482150030797 1.6742e-08 au q 2.710812446319844 1.0039e-07 au i 7.841600407714137 3.6915e-06 deg node 283.7760411315144 3.139e-05 deg peri 155.9969612384653 3.4613e-05 deg M 144.4874670221022 1.4492e-05 deg tp 2458559.497409088489 (2019-Mar-16.99740909) 8.2662e-05 TDB period 2085.446848355718 5.71 1.6394e-05 4.488e-08 d yr n .1726248742727938 1.357e-09 deg/d Q 3.67815185374175 1.9276e-08 au   Orbit Determination Parameters    # obs. used (total)      1789      data-arc span      23961 days (65.60 yr)      first obs. used      1955-11-11      last obs. used      2021-06-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4821      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 17:43:17   Additional Information  Earth MOID = 1.72885 au   Jupiter MOID = 1.56794 au   T_jup = 3.163  [ 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 13.3   n/a MPO502298   16797 Wilkerson           Discovered 1997 Feb. 7 by A. Boattini and L. Tesi at San Marcello Pistoiese. Winston S. Wilkerson, uncle of the first discoverer's wife, is a member of the physics faculty at The Cooper Union for the Advancement of Science and Art in New York. His interests have concentrated on variable stars, and he has been a member of the American Association of Variable Star Observers for many years. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010705/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  1997 CA17 = 1994 LJ10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Aug-03 02:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin