+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   58175 (1990 SE15) Classification: Mars-crossing Asteroid          SPK-ID: 2058175 [ 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 .2603648951265175 6.9562e-08   a 2.244270946168821 1.7541e-08 AU q 1.659941576634085 1.5851e-07 AU i 5.967828426299153 9.0281e-06 deg node 234.9643039310237 7.5538e-05 deg peri 86.31280826767873 7.8448e-05 deg M 276.7776081807109 2.3224e-05 deg tp 2456684.389317180027 (2014-Jan-26.88931718) 8.1628e-05 JED period 1228.03673327161 3.36 1.4397e-05 3.942e-08 d yr n .2931508400737532 3.4369e-09 deg/d Q 2.828600315703556 2.2108e-08 AU   Orbit Determination Parameters    # obs. used (total)      369      data-arc span      8253 days (22.60 yr)      first obs. used      1990-09-17      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5336      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 16:36:51   Additional Information  Earth MOID = .660872 AU   T_jup = 3.580  [ 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 15.626 mag .47012 1 autocmod 2.5c 58175 (1990 SE15)          Discovered 1990-Sep-17 by Holt, H. E. at Palomar (675) Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 SE15 = 2000 LJ16  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 06:27 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin