+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9046 (1991 PG17) Classification: Main-belt Asteroid          SPK-ID: 2009046 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO236445 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1800249 n/a   a 2.3309927 n/a AU q 1.9113560 n/a AU i 12.13023 n/a deg node 307.84927 n/a deg peri 311.23755 n/a deg M 81.04327 n/a deg tp 2456107.8663540 (2012-Jun-29.36635400) n/a JED period 1299.8995791 3.56 n/a n/a d yr n 0.27694447 n/a deg/d Q 2.7506294 n/a AU   Orbit Determination Parameters    # obs. used (total)      688      first obs. used      1991-??-??      last obs. used      2012-08-06      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.520  [ 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 32184)   9046 (1991 PG17)          Discovered 1991-Aug-09 by Holt, H. E. at Palomar (675) Reference: 19980808/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 PG17 = 1994 FW  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 00:01 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin