+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   102230 (1999 TA18) Classification: Main-belt Asteroid          SPK-ID: 2102230 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO233953 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1367150 n/a   a 2.8512564 n/a AU q 2.4614469 n/a AU i 1.16858 n/a deg node 237.76335 n/a deg peri 140.32510 n/a deg M 294.37475 n/a deg tp 2456721.0688553 (2014-Mar-04.56885530) n/a JED period 1758.5424497 4.81 n/a n/a d yr n 0.20471499 n/a deg/d Q 3.2410659 n/a AU   Orbit Determination Parameters    # obs. used (total)      340      first obs. used      1999-??-??      last obs. used      2012-06-10      # oppositions      10      planetary ephem.      DE403      condition code      0      fit RMS      0.51      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 3.291  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.4 mag n/a MPC30318   102230 (1999 TA18)          Discovered 1999-Oct-10 by Beijing Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 05:32 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin