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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0168901987878113 9.5403e-08  
a 5.165844191210959 1.7167e-07 au
q 5.078592055914545 4.9114e-07 au
i 26.39198795032837 1.1918e-05 deg
node 219.384029600206 1.6238e-05 deg
peri 220.0963719164688 0.00034116 deg
M 120.1657083812416 0.00033314 deg
tp 2455969.009626629913
(2012-Feb-11.50962663)
0.0039942 JED
period 4288.549049103577
11.74
0.00021377
5.853e-07
d
yr
n .0839444753640511 4.1844e-09 deg/d
Q 5.253096326507372 1.7457e-07 au
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      9602 days (26.29 yr)  
   first obs. used      1989-01-08  
   last obs. used      2015-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58172  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:16:16  

Additional Information
 Earth MOID = 4.10257 au 
 Jupiter MOID = .115162 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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