Ceto
Number
65489
Provisional name
2003 FX128
Class
SDO
Discovery
22.03.2003, 06:39:23 UT, Palomar Mountain, CA, USA
Discovery chart
Discovery position
19 Libra 40' Rx
Time of announcement
25.04.2003 - 21:46 UT
Naming
09.11.2006
Orbital period
998 years
Orbit
  • crosses the orbits of Uranus, Neptune and Pluto
Aphelion
182 AU
Perihelion
  17.795 AU
Semimajor axis
  99.676 AU
Magnitude
6.3
Diameter
105 - 328 km
Inclination
22.3
 
Ceto has a binary companion. This is the second known tidally-evolved transneptunian binary system after Pluto-Charon (a situation where the spin period of the components is equal to their orbital period and therefore they present the same face to one another all the time). Ceto and its companion form a close binary system and their mutual orbit is nearly circular.
A tidally-evolved binary Centaur

Satellite
Phorcys
Discovery
11.04.2006, Hubble Space Telescope (HST)
Time of announcement
August 2006
Naming
November 2006
Distance between pair
1 841 km +/- 48 km
Orbital period
9.554 +/- 0.011 d

Photograph copyright © Susanna Kauppinen. All rights reserved.
Photo: Copyright © Susanna Kauppinen.

Mythology
Keto was a hideous sea monster, a daughter of Gaia and Pontus. Her name means the "whale" or "sea-monster".

Keto's partner Phorkys was an ancient sea-god associated with seals.

Tyfon's partner Ekhidna was offspring of Keto and Phorkys.

Theoi Project - Keto
http://en.wikipedia.org/wiki/Ceto
http://en.wikipedia.org/wiki/Gaia

Astrology
Solar Eclipse in Aquarius -- 26.01.2009, 07:55 UT (The Sun and the Moon square Ceto in Scorpio)

New Moon in Pisces -- 25.02.2009, 01:35 UT (The Sun and the Moon trine Ceto)

New Moon in Taurus -- 25.04.2009, 03:23 UT (The Sun and the Moon opposite Ceto)