+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21610 Rosengard (1999 JE48) Classification: Main-belt Asteroid          SPK-ID: 2021610 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2382830729178708 4.3967e-08   a 2.794256302032423 1.68e-08 au q 2.128432323864011 1.224e-07 au i 9.96293672825456 4.7186e-06 deg node 256.6756158590865 2.661e-05 deg peri 67.95775942476142 2.853e-05 deg M 163.0651226891163 1.4535e-05 deg tp 2458427.719123574540 (2018-Nov-05.21912357) 6.5564e-05 TDB period 1706.073689611457 4.67 1.5387e-05 4.213e-08 d yr n .2110108151787903 1.903e-09 deg/d Q 3.460080280200835 2.0804e-08 au   Orbit Determination Parameters    # obs. used (total)      1177      data-arc span      14434 days (39.52 yr)      first obs. used      1981-09-07      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49715      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:50:14   Additional Information  Earth MOID = 1.13805 au   Jupiter MOID = 1.97491 au   T_jup = 3.264  [ 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 14.16   n/a E2021B10   21610 Rosengard           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Jamie Erin Rosengard (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for her engineering team project. She attends the Jericho High School, Jericho, New York, 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: 20060711/MPCPages.arc Last Updated: 2006-07-17 [ show close-approach data ] Alternate Designations  1999 JE48 = 1981 RY1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 12:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin