+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7236 (1987 PA) Classification: Amor [NEO]          SPK-ID: 2007236 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .559288051352925 1.6173e-07   a 2.723905251331754 3.4672e-08 AU q 1.200457591244418 4.4155e-07 AU i 16.33035341572057 3.6122e-05 deg node 308.5427026436847 5.2901e-05 deg peri 337.9146096054361 8.4605e-05 deg M 266.3197042427569 3.5488e-05 deg tp 2456827.799293448455 (2014-Jun-19.29929345) 0.0001697 JED period 1642.050170721735 4.50 3.1352e-05 8.584e-08 d yr n .2192381246437605 4.186e-09 deg/d Q 4.247352911419091 5.4064e-08 AU   Orbit Determination Parameters    # obs. used (total)      105      data-arc span      6634 days (18.16 yr)      first obs. used      1987-08-01      last obs. used      2005-09-29      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .58111      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:44:00   Additional Information  Earth MOID = .201746 AU   T_jup = 3.061  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 18.4 mag n/a PDS3 (MPC 28116)   7236 (1987 PA)          Discovered 1987-Aug-01 by Phinney, J. at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-23 14:19 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin