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346889 Rhiphonos (2009 QV38)
Classification: Centaur          SPK-ID: 2346889
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 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4439033776033918 9.0592e-06  
a 10.82736203112027 0.00020056 AU
q 6.02105945497126 1.3913e-05 AU
i 19.88661262754711 1.9056e-05 deg
node 11.53267246726105 4.1145e-05 deg
peri 13.62630047387845 0.00044407 deg
M 48.19296841734031 0.0014901 deg
tp 2455258.438066447992
(2010-Mar-02.93806645)
0.0057673 JED
period 13013.1493592138
35.63
0.36158
0.00099
d
yr
n .02766432552663406 7.6866e-07 deg/d
Q 15.63366460726928 0.00028959 AU
  Orbit Determination Parameters
   # obs. used (total)      181  
   data-arc span      1242 days (3.40 yr)  
   first obs. used      2009-08-28  
   last obs. used      2013-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .60272  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 18:33:36  

Additional Information
 Earth MOID = 5.02824 AU 
 T_jup = 2.912 
[ 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 11.8 mag n/a MPO251960  

346889 Rhiphonos           Discovered 2009 Aug. 28 by T. V. Kryachko at tge Zelenchukskaya Station of the Engelhardt Observatory.
Rhiphonos (Riphonus) was one of the commanders of the Centaurs who joined Dionysus in his campaign against India. Name suggested by A. Mimeev.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-07-22Last Updated: 2014-08-13
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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