+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   52621 (1997 VW4) Classification: Main-belt Asteroid          SPK-ID: 2052621 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO236637 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1156781 n/a   a 2.5708699 n/a AU q 2.2734766 n/a AU i 14.13010 n/a deg node 49.49415 n/a deg peri 129.55933 n/a deg M 143.53152 n/a deg tp 2455800.2068787 (2011-Aug-26.70687870) n/a JED period 1505.6311231 4.12 n/a n/a d yr n 0.23910239 n/a deg/d Q 2.8682632 n/a AU   Orbit Determination Parameters    # obs. used (total)      665      first obs. used      1989-??-??      last obs. used      2012-06-30      # oppositions      12      planetary ephem.      DE403      condition code      0      fit RMS      0.53      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.378  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.6 mag n/a MPO236637   52621 (1997 VW4)          Discovered 1997-Nov-04 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 20030216/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-18 20:56 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin