+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   73696 (1991 RQ19) Classification: Main-belt Asteroid          SPK-ID: 2073696 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2449438906698676 9.5517e-08   a 2.417326426988084 2.1919e-08 AU q 1.825217086942533 2.2766e-07 AU i 3.392625739512429 8.2372e-06 deg node 305.8483637839875 0.0001205 deg peri 30.93646715799909 0.00012114 deg M 278.8157352608276 1.7218e-05 deg tp 2456710.078461592222 (2014-Feb-21.57846159) 6.8705e-05 JED period 1372.781370026068 3.76 1.8672e-05 5.112e-08 d yr n .2622413210584028 3.5668e-09 deg/d Q 3.009435767033634 2.7288e-08 AU   Orbit Determination Parameters    # obs. used (total)      454      data-arc span      7887 days (21.59 yr)      first obs. used      1991-09-12      last obs. used      2013-04-16      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5267      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 17:24:25   Additional Information  Earth MOID = .816394 AU   T_jup = 3.472  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.494 mag .402 1 autocmod 2.5c 73696 (1991 RQ19)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar (675) Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RQ19 = 1995 WZ29  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 11:41 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin