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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05859318643826381 6.2149e-08  
a 5.118651726061564 9.6942e-08 au
q 4.818733611163897 3.792e-07 au
i 5.745227387283144 6.861e-06 deg
node 358.1353392123686 4.5479e-05 deg
peri 36.96451095073622 6.755e-05 deg
M 315.8086856428492 5.1546e-05 deg
tp 2459519.737698739172
(2021-Nov-01.23769874)		 0.00060889 TDB
period 4229.916540508024
11.58		 0.00012017
3.29e-07		 d
yr
n .0851080621928212 2.4178e-09 deg/d
Q 5.41856984095923 1.0262e-07 au
   Orbit Determination Parameters
   # obs. used (total)      1083  
   data-arc span      17120 days (46.87 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:38:54  

Additional Information
 Earth MOID = 3.82716 au 
 Jupiter MOID = .0658984 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 11.4   n/a MPO412277  

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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