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188847 Rhipeus (2006 FT9)
Classification: Jupiter Trojan          SPK-ID: 2188847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06230921925918388 5.6387e-08  
a 5.182143063661062 1.7882e-07 au
q 4.859247775274946 2.2222e-07 au
i 7.10074011704765 8.1581e-06 deg
node 232.8914905385564 3.9349e-05 deg
peri 266.3599063728661 8.2974e-05 deg
M 87.40700276648271 7.0467e-05 deg
tp 2457954.320388521149
(2017-Jul-19.82038852)
0.00084567 TDB
period 4308.861397965791
11.80
0.00022303
6.106e-07
d
yr
n .08354875377749575 4.3245e-09 deg/d
Q 5.505038352047178 1.8996e-07 au
  Orbit Determination Parameters
   # obs. used (total)      268  
   data-arc span      6076 days (16.64 yr)  
   first obs. used      2003-11-29  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:35:47  

Additional Information
 Earth MOID = 3.88199 au 
 Jupiter MOID = .0618511 au 
 T_jup = 2.981 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO436935  

188847 Rhipeus           Discovered 2006 Mar. 23 by Calvin College at the Calvin-Rehoboth Observatory.
According to Virgil, Rhipeus died fighting alongside Aeneas in the fall of Troy. The poet says that Rhipeus was "the single most just man among the Trojans and the best preserver of fairness, but the gods thought otherwise". In the Paradiso, Dante places him in the sphere of Jupiter in the eye of the eagle.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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