+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   8338 Ralhan (1985 FE3) Classification: Main-belt Asteroid          SPK-ID: 2008338 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1877607213019518 6.0501e-08   a 2.256782603548821 1.4726e-08 AU q 1.833047474084798 1.3652e-07 AU i 7.95756339603523 6.3473e-06 deg node 91.77687829799407 4.8022e-05 deg peri 140.4047039073104 5.1213e-05 deg M 55.89349824035251 1.8384e-05 deg tp 2456208.238730286579 (2012-Oct-07.73873029) 6.2625e-05 JED period 1238.320364189731 3.39 1.2121e-05 3.319e-08 d yr n .290716369051686 2.8456e-09 deg/d Q 2.680517733012845 1.7492e-08 AU   Orbit Determination Parameters    # obs. used (total)      913      data-arc span      10285 days (28.16 yr)      first obs. used      1985-02-19      last obs. used      2013-04-18      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .50167      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:30:42   Additional Information  Earth MOID = .829611 AU   T_jup = 3.587  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4 mag n/a PDS3 (MPC 31351)   rotation period rot_per 5.2745 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Brinsfield, J.W. (2009) Minor Planet Bul. 36, 169.] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm] 8338 Ralhan           Discovered 1985 Mar. 27 at Brorfelde. Danish physicist Philip Ralhan Bidstrup (b. 1979) obtained a doctorate from the University of Copenhagen in 2008 based on a feasibility study for detecting and observing small minor planets by a spacecraft in deep space. The name was suggested by A. C. Andersen. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080520/MPCPages.arc Last Updated: 2008-05-22 Alternate Designations  1985 FE3 = 1985 DG = 1992 KG  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 18:48 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin