+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   11293 (1991 XL) Classification: Main-belt Asteroid          SPK-ID: 2011293 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256948 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1385370 n/a   a 2.3161427 n/a AU q 1.9952712 n/a AU i 5.14387 n/a deg node 78.10599 n/a deg peri 225.15936 n/a deg M 134.57418 n/a deg tp 2455919.2113438 (2011-Dec-23.71134380) n/a JED period 1287.4974697 3.52 n/a n/a d yr n 0.27961220 n/a deg/d Q 2.6370142 n/a AU   Orbit Determination Parameters    # obs. used (total)      974      first obs. used      1991-??-??      last obs. used      2013-03-12      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.563  [ 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 35564)   11293 (1991 XL)          Discovered 1991-Dec-04 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 XL = 1997 JD17 = 1997 LW11  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 23:08 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin