+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10731 (1988 BL3) Classification: Main-belt Asteroid          SPK-ID: 2010731 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ 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 .2055115919784445 6.8739e-08   a 2.256550982478498 1.5042e-08 AU q 1.792803597688819 1.5229e-07 AU i 6.06395488144476 6.6443e-06 deg node 264.4047163270429 6.5521e-05 deg peri 83.11427193296888 6.7312e-05 deg M 294.4689059768475 1.8566e-05 deg tp 2456625.877765916765 (2013-Nov-29.37776592) 6.497e-05 JED period 1238.129729703118 3.39 1.238e-05 3.389e-08 d yr n .290761130569348 2.9072e-09 deg/d Q 2.720298367268176 1.8133e-08 AU   Orbit Determination Parameters    # obs. used (total)      934      data-arc span      19578 days (53.60 yr)      first obs. used      1959-09-09      last obs. used      2013-04-16      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .47718      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:41:28   Additional Information  Earth MOID = .798 AU   T_jup = 3.588  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.5 mag n/a PDS3 (MPC 34752)   rotation period rot_per 28.02 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Pray, D.P. (2011) http://www.geocities.com/dppray_2000/] Alternate Designations  1988 BL3 = 1959 RC1 = 1983 VL4 = 1997 YO11  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2013-May-25 20:31 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin