+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   101429 (1998 VF31) Classification: Mars-crossing Asteroid          SPK-ID: 2101429 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO240900 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1003765 n/a   a 1.5241558 n/a AU q 1.3711664 n/a AU i 31.29733 n/a deg node 221.33011 n/a deg peri 310.55717 n/a deg M 137.59863 n/a deg tp 2456137.8036101 (2012-Jul-29.30361010) n/a JED period 687.2939097 1.88 n/a n/a d yr n 0.52379338 n/a deg/d Q 1.6771452 n/a AU   Orbit Determination Parameters    # obs. used (total)      220      first obs. used      1996-??-??      last obs. used      2011-11-30      # oppositions      6      planetary ephem.      DE403      condition code      1      fit RMS      0.68      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 4.334   MPC critical-list numbered object  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.4 mag n/a MPC47755   101429 (1998 VF31)          Discovered 1998-Nov-13 by LINEAR at Socorro (704) Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 21:25 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin