+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14163 Johnchapman (1998 TY20) Classification: Main-belt Asteroid          SPK-ID: 2014163 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07512467618484894 3.6212e-08   a 2.876770003064793 1.5179e-08 au q 2.660653588126264 1.0284e-07 au i .7950671932803329 4.2099e-06 deg node 294.4367271996547 0.00037253 deg peri 145.8675766669667 0.00037438 deg M 110.1193611885527 3.7802e-05 deg tp 2458455.348361425963 (2018-Dec-02.84836143) 0.0001857 TDB period 1782.198768394733 4.88 1.4106e-05 3.862e-08 d yr n .201997670733585 1.5988e-09 deg/d Q 3.092886418003323 1.632e-08 au   Orbit Determination Parameters    # obs. used (total)      1022      data-arc span      9739 days (26.66 yr)      first obs. used      1993-10-12      last obs. used      2020-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53166      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:41:42   Additional Information  Earth MOID = 1.67639 au   Jupiter MOID = 2.0728 au   T_jup = 3.292  [ 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 14.7   n/a MPO337378   14163 Johnchapman           Discovered 1998 Oct. 13 by Spacewatch at Kitt Peak. John Herbert Chapman (1921-1979) began his career researching radio propagation and the ionosphere. He worked on the Alouette, ISIS and Hermes satellite projects and was known as the "Father of the Canadian Space Program". NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030614/MPCPages.arc Last Updated: 2005-04-26 [ show close-approach data ] Alternate Designations  1998 TY20 = 1996 HP13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 22:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin