+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   23992 Markhobbs (1999 RO11) Classification: Main-belt Asteroid          SPK-ID: 2023992 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231584 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1871502 n/a   a 2.3164470 n/a AU q 1.8829235 n/a AU i 5.31113 n/a deg node 340.47654 n/a deg peri 56.45781 n/a deg M 266.10865 n/a deg tp 2456736.3575166 (2014-Mar-19.85751660) n/a JED period 1287.7512783 3.53 n/a n/a d yr n 0.27955709 n/a deg/d Q 2.7499705 n/a AU   Orbit Determination Parameters    # obs. used (total)      364      first obs. used      1980-??-??      last obs. used      2012-05-10      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.58      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.552  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.6 mag n/a PDS3 (MPO 11266)   23992 Markhobbs           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Mark Hobbs mentored a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Fairmont Private Schools, Santa Ana, California. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20071026/MPCPages.arc Last Updated: 2007-10-28 Alternate Designations  1999 RO11 = 1980 FH8 = 1992 SG18  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 11:24 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin