+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   46568 Stevenlee (1991 SL) Classification: Inner Main-belt Asteroid          SPK-ID: 2046568 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09883333718477337 1.1008e-07   a 1.96322119374527 1.8432e-08 AU q 1.769189491535551 2.0874e-07 AU i 19.13908263977727 1.164e-05 deg node 12.9221210151283 2.2268e-05 deg peri 24.85382999327334 5.409e-05 deg M 262.8161970453652 4.94e-05 deg tp 2456671.733711299198 (2014-Jan-14.23371130) 0.00013918 JED period 1004.736726687795 2.75 1.415e-05 3.874e-08 d yr n .3583028174821204 5.0461e-09 deg/d Q 2.15725289595499 2.0254e-08 AU   Orbit Determination Parameters    # obs. used (total)      627      data-arc span      11288 days (30.90 yr)      first obs. used      1982-05-25      last obs. used      2013-04-20      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .52145      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 16:13:48   Additional Information  Earth MOID = .780782 AU   T_jup = 3.805  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.507 mag .53867 1 autocmod 2.5c 46568 Stevenlee           Discovered 1991 Sept. 30 by R. H. McNaught at Siding Spring Observatory. Steven (Steve) Lee (b. 1956) has been a night assistant at the Anglo-Australian Telescope for the past two decades. He is also an active amateur astronomer and telescope maker, writing technical articles on these topics and encouraging interest in the amateur community. He visually discovered comet C/1999 H1 (Lee). NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040504/MPCPages.arc Last Updated: 2004-05-11 Alternate Designations  1991 SL = 2000 XU13  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 15:44 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin