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228110 Eudorus (2008 TC9)
Classification: Jupiter Trojan          SPK-ID: 2228110
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03243674777581137 1.2755e-07  
a 5.308256147522716 2.82e-07 au
q 5.136073581736121 7.1753e-07 au
i 1.46874113643855 1.1163e-05 deg
node 73.66320199788376 0.00043519 deg
peri 324.1288437414004 0.00046858 deg
M 229.1111737297568 0.00017962 deg
tp 2459224.650635604979
0.0022935 JED
period 4467.105752866845
n .08058909278540441 6.422e-09 deg/d
Q 5.480438713309311 2.9115e-07 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      5199 days (14.23 yr)  
   first obs. used      2001-03-24  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58057  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 16:02:30  

Additional Information
 Earth MOID = 4.14181 au 
 Jupiter MOID = .00332128 au 
 T_jup = 2.999 
[ 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 13.7 mag n/a MPO341731  

228110 Eudorus           Discovered 2008 Oct. 7 by L. A. Molnar at the Calvin-Rehoboth Observatory.
Eudorus ("Good Gift") was one of the captains of Achilles' fierce Myrmidon troops. He was an excellent runner and quick in battle, taking after his father Hermes. His unwed mother, Polymele, had to give him up when she married. His grandfather Phylas raised him, "loving him dearly, as he had been his own son".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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