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12973 Melanthios (1973 SY1)
Classification: Jupiter Trojan          SPK-ID: 2012973
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.arcLast Updated: 2013-03-29

Alternate Designations
 1973 SY1 = 1996 SY7 = 1998 VO21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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