+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   23658 (1997 CC28) Classification: Main-belt Asteroid          SPK-ID: 2023658 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231581 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1299356 n/a   a 2.4363586 n/a AU q 2.1197889 n/a AU i 2.41204 n/a deg node 115.62625 n/a deg peri 2.70070 n/a deg M 114.61037 n/a deg tp 2455958.2868408 (2012-Jan-31.78684080) n/a JED period 1389.0255943 3.80 n/a n/a d yr n 0.25917449 n/a deg/d Q 2.7529283 n/a AU   Orbit Determination Parameters    # obs. used (total)      334      first obs. used      1995-??-??      last obs. used      2012-05-14      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.491  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.1 mag n/a PDS3 (MPO 11155)   23658 (1997 CC28)          Discovered 1997-Feb-06 by Beijing Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20010408/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1997 CC28 = 1999 TF258  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 02:55 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin