+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21466 Franpelrine (1998 HZ91) Classification: Main-belt Asteroid          SPK-ID: 2021466 [ 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 .1503836404921506 3.5383e-08   a 2.36425037707641 7.8627e-09 au q 2.00870579833672 8.1527e-08 au i 2.848731294946248 3.4159e-06 deg node 137.1199414333857 7.3508e-05 deg peri 61.34818348027652 7.4373e-05 deg M 96.39844998210621 1.114e-05 deg tp 2458844.945501790819 (2019-Dec-27.44550179) 4.0799e-05 TDB period 1327.818231300033 3.64 6.6238e-06 1.813e-08 d yr n .2711214468320209 1.3525e-09 deg/d Q 2.719794955816101 9.0451e-09 au   Orbit Determination Parameters    # obs. used (total)      1524      data-arc span      16213 days (44.39 yr)      first obs. used      1976-04-02      last obs. used      2020-08-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49547      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:56:52   Additional Information  Earth MOID = 1.00783 au   Jupiter MOID = 2.23578 au   T_jup = 3.532  [ 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 14.84   n/a E2020-QM5   21466 Franpelrine           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Frances Pelrine mentored a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Notre Dame High School for Boys, Niles, Illinois. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050224/MPCPages.arc Last Updated: 2005-02-28 [ show close-approach data ] Alternate Designations  1998 HZ91 = 1976 GE4 = 1994 EU2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-10 19:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin