+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5721 (1984 SO5) Classification: Main-belt Asteroid          SPK-ID: 2005721 [ 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 .1241295775805906 6.5202e-08   a 2.683441032110841 1.9843e-08 AU q 2.350346630332498 1.7475e-07 AU i 4.666436436246167 6.979e-06 deg node 141.8334623101019 7.8459e-05 deg peri 248.1580367006305 8.3474e-05 deg M 145.5829621881113 3.0535e-05 deg tp 2455751.201256865909 (2011-Jul-08.70125687) 0.00013301 JED period 1605.596863912151 4.40 1.7809e-05 4.876e-08 d yr n .2242156845790259 2.487e-09 deg/d Q 3.016535433889183 2.2306e-08 AU   Orbit Determination Parameters    # obs. used (total)      1093      data-arc span      11861 days (32.47 yr)      first obs. used      1980-10-13      last obs. used      2013-04-04      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .53935      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:18:13   Additional Information  Earth MOID = 1.35947 AU   T_jup = 3.359  [ 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 13.1 mag n/a PDS3 (MPC 22673)   5721 (1984 SO5)          Discovered 1984-Sep-18 by Debehogne, H. at La Silla (809) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1984 SO5 = 1980 TL14 = 1989 WE2  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 19:26 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin