+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21617 Johnhagen (1999 JO119) Classification: Main-belt Asteroid          SPK-ID: 2021617 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1486757778746802 3.8549e-08   a 2.340797454014783 8.0964e-09 au q 1.992777571692064 9.0902e-08 au i 2.432935558241259 3.673e-06 deg node 221.8156916920202 8.4146e-05 deg peri 148.54435716 8.4745e-05 deg M 253.3172642628767 1.1329e-05 deg tp 2459588.146462198645 (2022-Jan-08.64646220) 4.2214e-05 TDB period 1308.109746410927 3.58 6.7868e-06 1.858e-08 d yr n .2752062668959814 1.4278e-09 deg/d Q 2.688817336337502 9.3001e-09 au   Orbit Determination Parameters    # obs. used (total)      1385      data-arc span      11194 days (30.65 yr)      first obs. used      1989-10-02      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5165      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:55:55   Additional Information  Earth MOID = .991442 au   Jupiter MOID = 2.78033 au   T_jup = 3.548  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.85   n/a E2021B10   21617 Johnhagen           Discovered 1999 May 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. John Thomas Hagen (b. 1988) was awarded second place in the 2005 Intel International Science and Engineering Fair for his space science project. He attends the Ayersville High School, Defiance, Ohio, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050822/MPCPages.arc Last Updated: 2005-08-26 Alternate Designations  1999 JO119 = 1989 TQ10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-11 05:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin