+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   13650 Perimedes (1996 TN49) Classification: Jupiter Trojan          SPK-ID: 2013650 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0970170171414353 4.8504e-08   a 5.219399015306411 9.0519e-08 au q 4.713028491570439 3.0379e-07 au i 10.70893341414626 7.2663e-06 deg node 206.8229506618742 2.6813e-05 deg peri 244.0495299620857 4.7039e-05 deg M 287.2605682757576 3.976e-05 deg tp 2459880.528179257373 (2022-Oct-28.02817926) 0.00048768 TDB period 4355.41132261924 11.92 0.0001133 3.102e-07 d yr n .08265579834684927 2.1502e-09 deg/d Q 5.725769539042384 9.9301e-08 au   Orbit Determination Parameters    # obs. used (total)      932      data-arc span      8810 days (24.12 yr)      first obs. used      1996-09-10      last obs. used      2020-10-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52368      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:45:00   Additional Information  Earth MOID = 3.7465 au   Jupiter MOID = .00753076 au   T_jup = 2.956  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.8   n/a MPO337374   diameter diameter 21.640 km 0.600 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   geometric albedo albedo 0.086   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   13650 Perimedes           Discovered 1996 Oct. 4 by E. W. Elst at the European Southern Observatory. Perimedes was the father of Schedios, the commander of the Phocians on the battlefield of Troy. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100330/MPCPages.arc Last Updated: 2010-04-05 Alternate Designations  1996 TN49 = 1996 RW33 = 1997 QX3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Dec-05 09:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin