+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1839610123304043 3.5089e-08   a 2.251136393985638 5.9666e-09 au q 1.837015064054224 7.8061e-08 au i 4.652935839695315 3.5586e-06 deg node 70.54948110803771 3.9633e-05 deg peri 326.6175987975107 4.0544e-05 deg M 236.7298215031828 8.9458e-06 deg tp 2459622.931859385781 (2022-Feb-12.43185939) 3.129e-05 TDB period 1233.676070184387 3.38 4.9048e-06 1.343e-08 d yr n .2918107992045221 1.1602e-09 deg/d Q 2.665257723917052 7.0642e-09 au   Orbit Determination Parameters    # obs. used (total)      1106      data-arc span      23911 days (65.46 yr)      first obs. used      1954-12-22      last obs. used      2020-06-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5163      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:58:51   Additional Information  Earth MOID = .845638 au   Jupiter MOID = 2.75203 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-May-08 21:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin