+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14214 Hirsch (1999 RP86) Classification: Main-belt Asteroid          SPK-ID: 2014214 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1965236638746785 5.1833e-08   a 2.515081407868848 7.357e-09 au q 2.020808394651378 1.2925e-07 au i 3.187139781466584 2.7244e-06 deg node 101.040164974444 8.9627e-05 deg peri 270.6752762198449 8.9872e-05 deg M 108.2438109774393 6.8894e-06 deg tp 2458762.446584839233 (2019-Oct-05.94658484) 2.7545e-05 TDB period 1456.889110184273 3.99 6.3925e-06 1.75e-08 d yr n .247101853863446 1.0842e-09 deg/d Q 3.009354421086319 8.8029e-09 au   Orbit Determination Parameters    # obs. used (total)      1564      data-arc span      10718 days (29.34 yr)      first obs. used      1991-09-15      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54155      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:16:47   Additional Information  Earth MOID = 1.02246 au   Jupiter MOID = 2.45831 au   T_jup = 3.430  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.81   n/a E2021B10   diameter diameter 2.870 km 0.508 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.310   0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14214 Hirsch           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Theresa Hirsch mentored a finalist in the 2002 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the St. John the Baptist School, New Brighton, Minnesota. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20021021/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1999 RP86 = 1991 RN23  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-27 05:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin