+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266620 (2008 PS13) Classification: Main-belt Asteroid          SPK-ID: 2266620 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1285792650183135 5.3582e-08   a 3.078990173415729 3.746e-08 au q 2.683095879919325 1.76e-07 au i 5.468918406838013 6.4215e-06 deg node 294.0603978320858 5.8468e-05 deg peri 169.1879331843511 6.3181e-05 deg M 299.6247708790625 2.4784e-05 deg tp 2459331.453647794787 (2021-Apr-26.95364779) 0.00013828 TDB period 1973.380721545048 5.40 3.6013e-05 9.86e-08 d yr n .1824280515511168 3.3292e-09 deg/d Q 3.474884466912134 4.2277e-08 au   Orbit Determination Parameters    # obs. used (total)      367      data-arc span      5859 days (16.04 yr)      first obs. used      2003-09-17      last obs. used      2019-10-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52801      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 04:05:28   Additional Information  Earth MOID = 1.70021 au   Jupiter MOID = 1.66552 au   T_jup = 3.209  [ 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 15.4   n/a MPO494440   diameter diameter 4.770 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.065   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   266620 (2008 PS13)          Discovered 2008-Aug-10 by Kugel, F. at Chante-Perdrix Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ show close-approach data ] Alternate Designations  2008 PS13 = 2003 SQ300  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-04 03:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin