+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   30884 (1992 SL23) Classification: Main-belt Asteroid          SPK-ID: 2030884 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO210564 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1467547 n/a   a 2.6121753 n/a AU q 2.2288263 n/a AU i 13.97590 n/a deg node 31.26158 n/a deg peri 34.29837 n/a deg M 278.96880 n/a deg tp 2456747.5976525 (2014-Mar-31.09765250) n/a JED period 1542.0622538 4.22 n/a n/a d yr n 0.23345361 n/a deg/d Q 2.9955243 n/a AU   Orbit Determination Parameters    # obs. used (total)      495      first obs. used      1975-??-??      last obs. used      2011-05-27      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.352  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.6 mag n/a PDS3 (MPO 18570)   30884 (1992 SL23)          Discovered 1992-Sep-30 by Holt, H. E. at Palomar (675) Reference: 20011130/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1992 SL23 = 1975 TT6 = 1992 US9 = 1992 XS = 1999 LS16  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 07:32 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin