+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0972866887238389 4.8306e-08   a 5.221134785452045 8.7959e-08 au q 4.713187870794564 3.0391e-07 au i 10.70734788326702 7.2164e-06 deg node 206.8248077370604 2.434e-05 deg peri 243.9161593737367 4.5086e-05 deg M 303.9398252113081 3.853e-05 deg tp 2459879.074805430186 (2022-Oct-26.57480543) 0.00047069 TDB period 4357.584165152172 11.93 0.00011012 3.015e-07 d yr n .08261458330029257 2.0877e-09 deg/d Q 5.729081700109525 9.6516e-08 au   Orbit Determination Parameters    # obs. used (total)      1022      data-arc span      8920 days (24.42 yr)      first obs. used      1996-09-10      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50818      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:04:21   Additional Information  Earth MOID = 3.7463 au   Jupiter MOID = .00955631 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 11.84   n/a E2021B10   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 ] 2021-Apr-18 21:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin