+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12973 Melanthios (1973 SY1) Classification: Jupiter Trojan          SPK-ID: 2012973 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05877349512745225 6.1456e-08   a 5.118021515219224 8.9368e-08 au q 4.817217502632292 3.7113e-07 au i 5.745596532923856 6.8111e-06 deg node 358.1354209319422 3.6253e-05 deg peri 37.53244114845673 5.8021e-05 deg M 349.0131700643324 4.4957e-05 deg tp 2459525.568864446966 (2021-Nov-07.06886445) 0.00052832 TDB period 4229.135380539964 11.58 0.00011077 3.033e-07 d yr n .08512378242997656 2.2296e-09 deg/d Q 5.418825527806158 9.4621e-08 au   Orbit Determination Parameters    # obs. used (total)      1414      data-arc span      17313 days (47.40 yr)      first obs. used      1973-09-19      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51076      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 16:56:21   Additional Information  Earth MOID = 3.82519 au   Jupiter MOID = .0636836 au   T_jup = 2.987  [ 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 11.50   n/a MPCxxxxx   12973 Melanthios           Discovered 1973 Sept. 19 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Melanthios was a goat herder of Odysseus. He mocked Odysseus when the latter came to Eumaios disguised as a beggar. Later Odysseus killed him. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000523/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1973 SY1 = 1996 SY7 = 1998 VO21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-23 20:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin