+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1513083588501701 3.2219e-08   a 3.195153763007404 1.7252e-08 au q 2.711700290852809 1.0155e-07 au i 7.841363745583024 3.9704e-06 deg node 283.7795903038103 3.2887e-05 deg peri 156.0735227775451 3.6777e-05 deg M 110.568223999223 1.5583e-05 deg tp 2458559.786456513887 (2019-Mar-17.28645651) 8.9905e-05 TDB period 2086.104554384645 5.71 1.6896e-05 4.626e-08 d yr n .1725704491864226 1.3977e-09 deg/d Q 3.678607235162 1.9862e-08 au   Orbit Determination Parameters    # obs. used (total)      1692      data-arc span      23845 days (65.28 yr)      first obs. used      1955-11-11      last obs. used      2021-02-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48549      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:42:23   Additional Information  Earth MOID = 1.72943 au   Jupiter MOID = 1.56656 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-Apr-15 05:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin