+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103485 (2000 AR231) Classification: Main-belt Asteroid          SPK-ID: 2103485 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1548043388042953 4.6678e-08   a 2.601475752693587 1.7347e-08 au q 2.19875601888245 1.199e-07 au i 11.62452626473163 5.181e-06 deg node 296.1547191340905 2.1918e-05 deg peri 335.0881254134763 2.8223e-05 deg M 203.2529803284911 2.1795e-05 deg tp 2459867.805787882116 (2022-Oct-15.30578788) 9.7185e-05 TDB period 1532.597456340838 4.20 1.5329e-05 4.197e-08 d yr n .2348953396148262 2.3495e-09 deg/d Q 3.004195486504724 2.0032e-08 au   Orbit Determination Parameters    # obs. used (total)      926      data-arc span      7688 days (21.05 yr)      first obs. used      2000-01-04      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47173      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:34:46   Additional Information  Earth MOID = 1.18607 au   Jupiter MOID = 2.16072 au   T_jup = 3.369  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.9   n/a MPO502733   diameter diameter 6.795 km 0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.056   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   103485 (2000 AR231)          Discovered 2000-Jan-04 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2000 AR231 = 2002 RS66  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 11:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin