+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   6353 Semper (3107 T-3) Classification: Main-belt Asteroid          SPK-ID: 2006353 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO47613 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1553164 n/a   a 3.1033937 n/a AU q 2.6213858 n/a AU i 2.52885 n/a deg node 31.84556 n/a deg peri 57.75874 n/a deg M 282.88109 n/a deg tp 2455628.2717541 (2011-Mar-07.77175410) n/a JED period 1996.8880718 5.47 n/a n/a d yr n 0.18028051 n/a deg/d Q 3.5854016 n/a AU   Orbit Determination Parameters    # obs. used (total)      319      first obs. used      1953-??-??      last obs. used      2002-08-04      # oppositions      12      planetary ephem.      DE403      quality code      0      fit RMS      0.58      data source      MPC:mpn      producer      MPC   Additional Information  T_jup = 3.201  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.1 mag n/a PDS3 (MPC 28115)   diameter diameter 17.9 km n/a DASTCOM value unverified geometric albedo albedo 0.0962   0.021 EAR-A-5-DDR-ALBEDOS-V1.0:IMPS IMPS quality code 2: from the PDS IMPS singleton file 6353 Semper (3107 T-3)           Discovered 1977-Oct-16 by van Houten & Gehrels at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  3107 T-3 = 1972 VZ = 1985 FN2 = 1988 VU  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2009-Nov-22 21:36 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin