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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.
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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .8221656814920131 | 1.7712e-05 | |
| a | 100.6696084057586 | 0.010759 | au |
| q | 17.90251120530399 | 0.00014049 | au |
| i | 22.3105154529261 | 4.1395e-05 | deg |
| node | 172.0735764855813 | 0.00014333 | deg |
| peri | 319.8720569628101 | 0.00088061 | deg |
| M | 11.00738173797868 | 0.0018117 | deg |
| tp | 2447720.021473736819
(1989-Jul-12.52147374) | 0.048854 | TDB |
| period | 368931.7192882667
1010.08 | 59.142
0.1619 | d
yr |
| n | .0009757903188549426 | 1.5642e-07 | deg/d |
| Q | 183.4367056062131 | 0.019604 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
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.arc | Last Updated: 2006-11-13 |
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