+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05871268213809628 6.1577e-08   a 5.118209393220661 8.9668e-08 au q 4.817705592000277 3.7185e-07 au i 5.745503775452031 6.8142e-06 deg node 358.1351895333111 3.6329e-05 deg peri 37.26073248574355 5.8027e-05 deg M 332.570118158207 4.4881e-05 deg tp 2459522.752976339918 (2021-Nov-04.25297634) 0.00052769 TDB period 4229.368254354367 11.58 0.00011114 3.043e-07 d yr n .08511909541794101 2.2369e-09 deg/d Q 5.418713194441044 9.4933e-08 au   Orbit Determination Parameters    # obs. used (total)      1381      data-arc span      17283 days (47.32 yr)      first obs. used      1973-09-19      last obs. used      2021-01-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51629      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:09:00   Additional Information  Earth MOID = 3.82511 au   Jupiter MOID = .0648402 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 11.49   n/a E2021B10   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-Feb-28 16:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin