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12916 Eteoneus (1998 TL15)
Classification: Jupiter Trojan          SPK-ID: 2012916
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01737847728955831 9.783e-08  
a 5.17075516863389 1.8676e-07 AU
q 5.080895317365919 5.3664e-07 AU
i 26.37257225220748 1.2675e-05 deg
node 219.4140368941512 1.6815e-05 deg
peri 223.6055717434992 0.00034334 deg
M 82.99276372653698 0.00033531 deg
tp 2456010.427231958123
(2012-Mar-23.92723196)
0.0040194 JED
period 4294.665950268965
11.76
0.00023267
6.37e-07
d
yr
n .08382491308257724 4.5414e-09 deg/d
Q 5.260615019901859 1.9e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      489  
   data-arc span      9570 days (26.20 yr)  
   first obs. used      1989-01-08  
   last obs. used      2015-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58169  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:45:27  

Additional Information
 Earth MOID = 4.10902 AU 
 T_jup = 2.792 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.4 mag n/a PDS3 (MPC 37096)  

12916 Eteoneus           Discovered 1998 Oct. 13 by the OCA-DLR Asteroid Survey at Caussols.
Eteoneus, the son of Boethous, was King Menelaus of Sparta's weapon-carrier during the Trojan War. He helped Odysseus in his attempts to return home.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

Alternate Designations
 1998 TL15 = 1986 TL7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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