+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9644 (1994 WQ3) Classification: Main-belt Asteroid          SPK-ID: 2009644 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO231479 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1501255 n/a   a 2.9110438 n/a AU q 2.4740219 n/a AU i 8.40259 n/a deg node 168.31963 n/a deg peri 169.37865 n/a deg M 328.25132 n/a deg tp 2456560.4906874 (2013-Sep-24.99068740) n/a JED period 1814.1430593 4.97 n/a n/a d yr n 0.19844080 n/a deg/d Q 3.3480657 n/a AU   Orbit Determination Parameters    # obs. used (total)      944      first obs. used      1994-??-??      last obs. used      2012-05-22      # oppositions      15      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.251  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.5 mag n/a PDS3 (MPC 32899)   9644 (1994 WQ3)          Discovered 1994-Nov-26 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 19981110/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-26 07:17 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin