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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05859315626660599 6.2538e-08  
a 5.118651650754283 1.0413e-07 au
q 4.818733694707316 3.8572e-07 au
i 5.745223429936741 6.8675e-06 deg
node 358.1353308700981 4.9115e-05 deg
peri 36.96442383553546 7.3494e-05 deg
M 315.8087783216093 5.7798e-05 deg
tp 2459519.736598326458
(2021-Nov-01.23659833)		 0.00068463 TDB
period 4229.916447160149
11.58		 0.00012908
3.534e-07		 d
yr
n .08510806407102775 2.5971e-09 deg/d
Q 5.41856960680125 1.1023e-07 au
   Orbit Determination Parameters
   # obs. used (total)      1013  
   data-arc span      16843 days (46.11 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56379  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:39:36  

Additional Information
 Earth MOID = 3.82716 au 
 Jupiter MOID = .0658987 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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