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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01784346339953289 1.062e-07  
a 5.173057370945375 2.1002e-07 AU
q 5.080752111083227 6.2216e-07 AU
i 26.36706511542791 1.3539e-05 deg
node 219.4354891427391 1.7386e-05 deg
peri 224.6504214941852 0.00034046 deg
M 65.12727702261446 0.00033192 deg
tp 2456023.036893826761
(2012-Apr-05.53689383)
0.0039796 JED
period 4297.53447430605
11.77
0.00026172
7.166e-07
d
yr
n .08376896151790185 5.1015e-09 deg/d
Q 5.265362630807522 2.1377e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      9192 days (25.17 yr)  
   first obs. used      1989-01-08  
   last obs. used      2014-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59091  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:30:22  

Additional Information
 Earth MOID = 4.1094 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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