+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   23464 (1989 TN15) Classification: Main-belt Asteroid          SPK-ID: 2023464 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231580 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1533294 n/a   a 2.2470245 n/a AU q 1.9024896 n/a AU i 2.98026 n/a deg node 345.65629 n/a deg peri 32.84460 n/a deg M 349.74457 n/a deg tp 2456435.5478599 (2013-May-23.04785990) n/a JED period 1230.2974695 3.37 n/a n/a d yr n 0.29261216 n/a deg/d Q 2.5915594 n/a AU   Orbit Determination Parameters    # obs. used (total)      582      first obs. used      1989-??-??      last obs. used      2012-05-12      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.54      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.613  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.5 mag n/a PDS3 (MPO 11093)   23464 (1989 TN15)          Discovered 1989-Oct-03 by Debehogne, H. at La Silla (809) Reference: 20010408/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1989 TN15 = 1999 RW15  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 18:25 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin