+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   73697 (1991 RT29) Classification: Main-belt Asteroid          SPK-ID: 2073697 [ 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 .1671908105489164 1.0133e-07   a 2.447292928636905 2.6838e-08 AU q 2.03812804024747 2.4683e-07 AU i 9.51758741099907 1.2019e-05 deg node 333.2372877734247 3.8033e-05 deg peri 28.95921810091091 4.9957e-05 deg M 234.0243603184633 2.9329e-05 deg tp 2456889.840804220743 (2014-Aug-20.34080422) 0.00011599 JED period 1398.386941830995 3.83 2.3003e-05 6.298e-08 d yr n .2574394748914271 4.2348e-09 deg/d Q 2.856457817026341 3.1326e-08 AU   Orbit Determination Parameters    # obs. used (total)      593      data-arc span      7889 days (21.60 yr)      first obs. used      1991-09-12      last obs. used      2013-04-18      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .58381      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 17:24:25   Additional Information  Earth MOID = 1.03924 AU   T_jup = 3.460  [ 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 14.459 mag .45564 1 autocmod 2.5c 73697 (1991 RT29)          Discovered 1991-Sep-12 by Holt, H. E. at Palomar (675) Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RT29 = 1999 XU208 = 2001 FS109  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 07:05 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin