+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13524 (1991 OO) Classification: Main-belt Asteroid          SPK-ID: 2013524 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256964 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2011247 n/a   a 2.2951524 n/a AU q 1.8335406 n/a AU i 3.38688 n/a deg node 231.38807 n/a deg peri 109.59426 n/a deg M 72.54617 n/a deg tp 2456144.5661669 (2012-Aug-05.06616690) n/a JED period 1270.0350678 3.48 n/a n/a d yr n 0.28345674 n/a deg/d Q 2.7567642 n/a AU   Orbit Determination Parameters    # obs. used (total)      765      first obs. used      1991-??-??      last obs. used      2013-03-13      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.566  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.7 mag n/a PDS3 (MPC 38322)   13524 (1991 OO)          Discovered 1991-Jul-18 by Holt, H. E. at Palomar (675) Reference: 20000222/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 17:47 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin