+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   4784 (1984 DF1) Classification: Main-belt Asteroid          SPK-ID: 2004784 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250253 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1140125 n/a   a 2.6777570 n/a AU q 2.3724592 n/a AU i 3.54163 n/a deg node 349.08872 n/a deg peri 168.95315 n/a deg M 239.85896 n/a deg tp 2456934.6264217 (2014-Oct-04.12642170) n/a JED period 1600.4981462 4.38 n/a n/a d yr n 0.22492997 n/a deg/d Q 2.9830548 n/a AU   Orbit Determination Parameters    # obs. used (total)      1053      first obs. used      1953-??-??      last obs. used      2013-01-14      # oppositions      20      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.366  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.3 mag n/a PDS3 (MPC 28112)   4784 (1984 DF1)          Discovered 1984-Feb-28 by Debehogne, H. at La Silla (809) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1984 DF1 = 1982 VN7 = 1990 QV8  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 17:06 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin