+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1510267687418839 3.5344e-08   a 2.363131754170617 7.8951e-09 au q 2.006235601226889 8.1466e-08 au i 2.84959851446 3.4131e-06 deg node 137.1240588244818 7.3484e-05 deg peri 61.26154452782527 7.4339e-05 deg M 149.5970945616342 1.1138e-05 deg tp 2458845.120025552663 (2019-Dec-27.62002555) 4.0556e-05 TDB period 1326.875975651121 3.63 6.6495e-06 1.821e-08 d yr n .2713139785527746 1.3597e-09 deg/d Q 2.720027907114345 9.0875e-09 au   Orbit Determination Parameters    # obs. used (total)      1528      data-arc span      16213 days (44.39 yr)      first obs. used      1976-04-02      last obs. used      2020-08-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4958      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:45:57   Additional Information  Earth MOID = 1.00687 au   Jupiter MOID = 2.23454 au   T_jup = 3.533  [ 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-Jul-31 06:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin