+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9593 (1991 PZ17) Classification: Main-belt Asteroid          SPK-ID: 2009593 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256935 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1552442 n/a   a 2.2958945 n/a AU q 1.9394702 n/a AU i 6.01117 n/a deg node 109.73382 n/a deg peri 307.12982 n/a deg M 20.66093 n/a deg tp 2456327.5754613 (2013-Feb-04.07546130) n/a JED period 1270.6511251 3.48 n/a n/a d yr n 0.28331931 n/a deg/d Q 2.6523188 n/a AU   Orbit Determination Parameters    # obs. used (total)      789      first obs. used      1989-??-??      last obs. used      2013-03-05      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.572  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.1 mag n/a PDS3 (MPC 32887)   9593 (1991 PZ17)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675) Reference: 19981110/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 PZ17 = 1989 AM8 = 1996 BR4  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 13:09 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin