+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   11555 (1993 CR1) Classification: Main-belt Asteroid          SPK-ID: 2011555 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250326 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1040700 n/a   a 2.6699932 n/a AU q 2.3921270 n/a AU i 13.66123 n/a deg node 149.15250 n/a deg peri 24.62889 n/a deg M 207.33141 n/a deg tp 2457076.2885911 (2015-Feb-22.78859110) n/a JED period 1593.5425407 4.36 n/a n/a d yr n 0.22591176 n/a deg/d Q 2.9478594 n/a AU   Orbit Determination Parameters    # obs. used (total)      708      first obs. used      1993-??-??      last obs. used      2012-11-25      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.333  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4 mag n/a PDS3 (MPC 35846)   11555 (1993 CR1)          Discovered 1993-Feb-15 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 19990928/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1993 CR1 = 1997 AP6  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 14:13 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin