+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12723 (1991 PD10) Classification: Main-belt Asteroid          SPK-ID: 2012723 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO234910 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0390980 n/a   a 2.3690191 n/a AU q 2.2763952 n/a AU i 7.26508 n/a deg node 332.07244 n/a deg peri 118.97814 n/a deg M 230.25871 n/a deg tp 2456880.4842384 (2014-Aug-10.98423840) n/a JED period 1331.8375811 3.65 n/a n/a d yr n 0.27030323 n/a deg/d Q 2.4616430 n/a AU   Orbit Determination Parameters    # obs. used (total)      709      first obs. used      1991-??-??      last obs. used      2012-07-08      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.534  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.7 mag n/a PDS3 (MPC 37044)   12723 (1991 PD10)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675) Reference: 19991222/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 PD10 = 1993 BU2  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-26 07:24 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin