+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7993 (1982 UD2) Classification: Main-belt Asteroid          SPK-ID: 2007993 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256923 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1325078 n/a   a 2.9284498 n/a AU q 2.5404074 n/a AU i 2.59649 n/a deg node 42.74250 n/a deg peri 330.20486 n/a deg M 51.89294 n/a deg tp 2456136.6477001 (2012-Jul-28.14770010) n/a JED period 1830.4383595 5.01 n/a n/a d yr n 0.19667420 n/a deg/d Q 3.3164922 n/a AU   Orbit Determination Parameters    # obs. used (total)      1230      first obs. used      1982-??-??      last obs. used      2013-03-14      # oppositions      20      planetary ephem.      DE403      condition code      0      fit RMS      0.50      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.262  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.6 mag n/a PDS3 (MPC 30850)   7993 (1982 UD2)          Discovered 1982-Oct-16 by Mrkos, A. at Klet Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1982 UD2 = 1987 UF  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 09:11 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin