+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15913 Telemachus (1997 TZ27) Classification: Jupiter Trojan          SPK-ID: 2015913 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06065826568113475 5.7384e-08   a 5.192913392610223 1.0036e-07 au q 4.877920272382149 3.7055e-07 au i 7.249375638747014 4.8971e-06 deg node 49.03429160479726 4.573e-05 deg peri 9.686453001616004 6.9543e-05 deg M 308.9481966816548 5.3922e-05 deg tp 2459813.448000618697 (2022-Aug-21.94800062) 0.00065474 TDB period 4322.301385648362 11.83 0.0001253 3.431e-07 d yr n .08328896295740344 2.4146e-09 deg/d Q 5.507906512838297 1.0645e-07 au   Orbit Determination Parameters    # obs. used (total)      919      data-arc span      10491 days (28.72 yr)      first obs. used      1992-04-24      last obs. used      2021-01-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55241      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:26:30   Additional Information  Earth MOID = 3.88964 au   Jupiter MOID = .0521584 au   T_jup = 2.980  [ 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 12.04   n/a E2021B10   diameter diameter 16.669 km 0.875 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   geometric albedo albedo 0.110   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   15913 Telemachus           Discovered 1997 Oct. 1 at the European Southern Observatory during the Uppsala-DLR Trojan Survey. Telemachus, son of Odysseus, was born just before the Trojan war started. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010309/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1997 TZ27 = 1996 RY29 = 1998 WQ10 = 2000 AY7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-05 13:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin