+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   26995 (1997 XS11) Classification: Main-belt Asteroid          SPK-ID: 2026995 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250470 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0536366 n/a   a 3.0461600 n/a AU q 2.8827743 n/a AU i 8.21567 n/a deg node 263.96471 n/a deg peri 182.79526 n/a deg M 303.63288 n/a deg tp 2456704.5540781 (2014-Feb-16.05407810) n/a JED period 1941.9027993 5.32 n/a n/a d yr n 0.18538518 n/a deg/d Q 3.2095457 n/a AU   Orbit Determination Parameters    # obs. used (total)      580      first obs. used      1997-??-??      last obs. used      2013-01-07      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.53      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.221  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.5 mag n/a PDS3 (MPO 14521)   26995 (1997 XS11)          Discovered 1997-Dec-05 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 20010804/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1997 XS11 = 1999 CN5  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 11:54 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin