+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   5648 (1990 VU1) Classification: Jupiter Trojan          SPK-ID: 2005648 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455800.5 (2011-Aug-27.0) TDB Reference: MPO196500 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1666421 n/a   a 5.1587524 n/a AU q 4.2990871 n/a AU i 22.69348 n/a deg node 71.03677 n/a deg peri 268.88312 n/a deg M 335.58154 n/a deg tp 2456090.7894435 (2012-Jun-12.28944350) n/a JED period 4279.7211476 11.72 n/a n/a d yr n 0.08411763 n/a deg/d Q 6.0184177 n/a AU   Orbit Determination Parameters    # obs. used (total)      706      first obs. used      1950-??-??      last obs. used      2011-04-13      # oppositions      18      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 2.820   MPC Jupiter Trojan  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.2 mag n/a PDS3 (MPC 22480)   rotation period rot_per 16.04 h n/a Asteroid Lightcurve DataBase (Rev. 2010-Mar-21) Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] 5648 (1990 VU1)          Discovered 1990-Nov-11 by Endate and Watanabe at Kitami (400) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2011-Jun-10 00:49 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin