+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   10911 (1997 YC1) Classification: Main-belt Asteroid          SPK-ID: 2010911 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256945 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2151331 n/a   a 2.3656181 n/a AU q 1.8566953 n/a AU i 3.64567 n/a deg node 72.15785 n/a deg peri 282.44427 n/a deg M 162.83667 n/a deg tp 2455799.3746056 (2011-Aug-25.87460560) n/a JED period 1328.9705691 3.64 n/a n/a d yr n 0.27088636 n/a deg/d Q 2.8745409 n/a AU   Orbit Determination Parameters    # obs. used (total)      797      first obs. used      1971-??-??      last obs. used      2013-03-19      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.514  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.1 mag n/a PDS3 (MPC 34800)   Alternate Designations  1997 YC1 = 1971 SH3  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2013-May-19 01:39 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin