+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17258 Whalen (2000 HK90) Classification: Main-belt Asteroid          SPK-ID: 2017258 [ 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 .1840743337054438 3.506e-08   a 2.250797438924834 6.0336e-09 au q 1.836483400048826 7.7929e-08 au i 4.653298831539344 3.5599e-06 deg node 70.54916511360679 3.9788e-05 deg peri 326.6700964088877 4.0699e-05 deg M 178.2951876928169 8.9081e-06 deg tp 2458389.642140516183 (2018-Sep-28.14214052) 2.9811e-05 TDB period 1233.397447569102 3.38 4.9595e-06 1.358e-08 d yr n .2918767188220817 1.1736e-09 deg/d Q 2.665111477800842 7.1443e-09 au   Orbit Determination Parameters    # obs. used (total)      1090      data-arc span      23911 days (65.46 yr)      first obs. used      1954-12-22      last obs. used      2020-06-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51929      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:22:04   Additional Information  Earth MOID = .84616 au   Jupiter MOID = 2.75103 au   T_jup = 3.600  [ 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 15.6   n/a MPO467889   17258 Whalen           Discovered 2000 Apr. 29 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Named in honor of Patrice Whalen for mentoring a finalist in the 2002 Intel Science Talent Search, a science competition for high school seniors. Whalen is a teacher at the Humanities and Sciences Institute, Phoenix, Arizona. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020227/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  2000 HK90 = 1984 UX3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 16:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin