+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   1192 Prisma (1931 FE) Classification: Main-belt Asteroid          SPK-ID: 2001192 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO160657 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2573997 n/a   a 2.3667858 n/a AU q 1.7575758 n/a AU i 23.89609 n/a deg node 1.38576 n/a deg peri 131.37703 n/a deg M 259.30911 n/a deg tp 2455572.4842307 (2011-Jan-10.98423070) n/a JED period 1329.9547065 3.64 n/a n/a d yr n 0.27068591 n/a deg/d Q 2.9759958 n/a AU   Orbit Determination Parameters    # obs. used (total)      372      first obs. used      1931-??-??      last obs. used      2009-08-20      # oppositions      15      planetary ephem.      DE403      quality code      0      fit RMS      0.59      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 3.390  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.92 mag n/a PDS3 (MPC 17261)   rotation period rot_per 6.558 h n/a IAU Lightcurve Data (A.W. Harris, E-mail Mar. 2006) Published Reference List: [Binzel, R.P., Mulholland J.D.: 1983, Icarus 56, 519-533.] 1192 Prisma (1931 FE)           Discovered 1931-Mar-17 by Schwassmann, A. at Bergedorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2010-Feb-10 07:20 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin