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65489 Ceto (2003 FX128)
Classification: TransNeptunian Object          SPK-ID: 2065489
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8221840203676828 8.0754e-06  
a 100.6807258836979 0.0050594 au
q 17.90264190310254 9.5307e-05 au
i 22.31053214294135 2.5266e-05 deg
node 172.07362998175 9.6119e-05 deg
peri 319.8728606879533 0.0005187 deg
M 11.00551272261827 0.00085298 deg
tp 2447720.068481228644
(1989-Jul-12.56848123)		 0.024806 TDB
period 368992.8356006267
1010.25		 27.814
0.07615		 d
yr
n .0009756286986277428 7.3541e-08 deg/d
Q 183.4588098642933 0.0092192 au
   Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      12155 days (33.28 yr)  
   first obs. used      1987-01-31  
   last obs. used      2020-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .55514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:22:01  

Additional Information
 Earth MOID = 16.9482 au 
 Jupiter MOID = 12.7874 au 
 T_jup = 4.685 
[ 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 6.4   n/a MPO231800  
rotation period rot_per 4.43 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Dotto, E.; Pema, D.; Barucci, M.A.; Rossi, A. et al. (2008) Astron. Astrophys. 490, 829-833.]
[Perna, D.; Dotto, E.; Barucci, M.A.; Rossi, A.; et al. (2008) Bull. Amer. Astron. Soc. 40, #47.08.]

65489 Ceto           Discovered 2003 Mar. 22 by C. A. Trujillo and M. Brown at Palomar.
The satellite (65489) Ceto I, discovered 2006 Apr. 11 by K. Noll, H. Levison, W. Grundy and D. Stephens using the Hubble Space Telescope, is named Phorcys, for another child of Gaia and Pontus. Phorcys is represented with a man's head, crab's claws and a fish tail. Together the monstrous sea creatures Ceto and Phorcys produced numerous offspring, including many monstrous creatures known collectively as the Phorcydides.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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