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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01700596940026501 9.705e-08  
a 5.162701506968451 1.4743e-07 au
q 5.074904763118244 4.8619e-07 au
i 26.40360720830332 1.1717e-05 deg
node 219.3793837606184 1.4921e-05 deg
peri 217.7355149124028 0.00029685 deg
M 139.3700334534325 0.00029199 deg
tp 2455941.750310788355
(2012-Jan-15.25031079)
0.0034879 JED
period 4284.636182682105
11.73
0.00018353
5.025e-07
d
yr
n .08402113613638171 3.599e-09 deg/d
Q 5.25049825081866 1.4993e-07 au
  Orbit Determination Parameters
   # obs. used (total)      549  
   data-arc span      9961 days (27.27 yr)  
   first obs. used      1989-01-08  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58723  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:15:17  

Additional Information
 Earth MOID = 4.09678 au 
 Jupiter MOID = .108703 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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