+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13165 (1995 WS1) Classification: Main-belt Asteroid          SPK-ID: 2013165 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256962 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1898441 n/a   a 2.2335510 n/a AU q 1.8095245 n/a AU i 3.87114 n/a deg node 43.87048 n/a deg peri 317.18410 n/a deg M 117.37755 n/a deg tp 2456002.9655440 (2012-Mar-16.46554400) n/a JED period 1219.2485202 3.34 n/a n/a d yr n 0.29526384 n/a deg/d Q 2.6575775 n/a AU   Orbit Determination Parameters    # obs. used (total)      834      first obs. used      1985-??-??      last obs. used      2013-03-17      # oppositions      14      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 14.1 mag n/a PDS3 (MPC 37530)   13165 (1995 WS1)          Discovered 1995-Nov-16 by Ueda, S., Kaneda, H. at Kushiro (399) Reference: 20000124/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1995 WS1 = 1985 WE = 1998 QR22  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 17:49 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin