+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12693 (1989 EZ) Classification: Main-belt Asteroid          SPK-ID: 2012693 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO253453 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2119140 n/a   a 2.5534338 n/a AU q 2.0123254 n/a AU i 7.06212 n/a deg node 20.33508 n/a deg peri 258.42849 n/a deg M 203.67974 n/a deg tp 2457047.6397914 (2015-Jan-25.13979140) n/a JED period 1490.3399271 4.08 n/a n/a d yr n 0.24155563 n/a deg/d Q 3.0945422 n/a AU   Orbit Determination Parameters    # obs. used (total)      1224      first obs. used      1949-??-??      last obs. used      2013-02-06      # oppositions      17      planetary ephem.      DE403      condition code      0      fit RMS      0.49      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 12.6 mag n/a PDS3 (MPC 37036)   12693 (1989 EZ)          Discovered 1989-Mar-09 by Oshima, Y. at Gekko (888) Reference: 19991222/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1989 EZ = 1937 ND = 1949 KB1 = 1969 EF2 = 1970 SJ1 = 1998 KY17 = 1999 TB27  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 05:58 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin