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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01737844900133077 1.0712e-07  
a 5.170755235375804 2.0884e-07 AU
q 5.080895529219461 6.2341e-07 AU
i 26.37257749455013 1.3537e-05 deg
node 219.4140416507004 1.7392e-05 deg
peri 223.6055390328839 0.00034692 deg
M 82.99278703408886 0.00033791 deg
tp 2456010.426934738544
(2012-Mar-23.92693474)
0.0040537 JED
period 4294.666033419555
11.76
0.00026018
7.123e-07
d
yr
n .08382491145961264 5.0783e-09 deg/d
Q 5.260614941532146 2.1247e-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 = 4.10902 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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