+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   6028 (1994 ER1) Classification: Main-belt Asteroid          SPK-ID: 2006028 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256908 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1725640 n/a   a 2.5742174 n/a AU q 2.1300001 n/a AU i 6.74681 n/a deg node 301.00793 n/a deg peri 309.42955 n/a deg M 175.64398 n/a deg tp 2455664.4674249 (2011-Apr-12.96742490) n/a JED period 1508.5727791 4.13 n/a n/a d yr n 0.23863615 n/a deg/d Q 3.0184347 n/a AU   Orbit Determination Parameters    # obs. used (total)      1028      first obs. used      1969-??-??      last obs. used      2013-03-09      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.397  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.4 mag n/a PDS3 (MPC 23667)   6028 (1994 ER1)          Discovered 1994-Mar-11 by Ueda and Kaneda at Kushiro (399) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1994 ER1 = 1969 EH = 1981 AS1 = 1987 QQ3 = 1987 SQ26 = 1991 RO13 = 1991 SQ1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 13:08 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin