+ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05871268159585226 6.155e-08   a 5.118209393881498 8.9596e-08 au q 4.817705595397634 3.7164e-07 au i 5.74550380593469 6.811e-06 deg node 358.1351892379408 3.6253e-05 deg peri 37.26073290890502 5.7943e-05 deg M 332.5701179607642 4.4816e-05 deg tp 2459522.752978721937 (2021-Nov-04.25297872) 0.00052691 TDB period 4229.368255173479 11.58 0.00011106 3.041e-07 d yr n .08511909540145579 2.2351e-09 deg/d Q 5.418713192365363 9.4857e-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-Apr-12 23:40:13   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-Apr-17 22:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin