+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12725 (1991 PP16) Classification: Main-belt Asteroid          SPK-ID: 2012725 [ 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 .1543855528002882 7.0815e-08   a 2.393396587290691 2.1152e-08 AU q 2.023890732091495 1.6514e-07 AU i 5.392627432331897 5.8992e-06 deg node 151.5660941468016 6.5471e-05 deg peri 190.0736319908109 6.9319e-05 deg M 306.5330586611464 2.8434e-05 deg tp 2456601.364536784874 (2013-Nov-04.86453679) 0.00010868 JED period 1352.447539205075 3.70 1.7929e-05 4.909e-08 d yr n .2661840770634226 3.5287e-09 deg/d Q 2.762902442489888 2.4418e-08 AU   Orbit Determination Parameters    # obs. used (total)      1032      data-arc span      8410 days (23.03 yr)      first obs. used      1990-04-01      last obs. used      2013-04-10      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .52444      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:49:42   Additional Information  Earth MOID = 1.01534 AU   T_jup = 3.508  [ 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 13.5 mag n/a PDS3 (MPC 37045)   12725 (1991 PP16)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675) Reference: 19991222/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 PP16 = 1995 UU8  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 02:05 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin