Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
65489 Ceto (2003 FX128)
Classification: TransNeptunian Object          SPK-ID: 2065489
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 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
0.024806 TDB
period 368992.8356006267
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. 2019-August); 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 ]
FirstGov 2020-Dec-01 11:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin