Lysithea is a
prograde irregular satellite of
Jupiter
Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a Jupiter mass, mass more than 2.5 times that of all the other planets in the Solar System combined a ...
. It was discovered by
Seth Barnes Nicholson in 1938 at
Mount Wilson Observatory
The Mount Wilson Observatory (MWO) is an Observatory#Astronomical observatories, astronomical observatory in Los Angeles County, California, United States. The MWO is located on Mount Wilson (California), Mount Wilson, a peak in the San Gabrie ...
and is named after the mythological
Lysithea, daughter of
Oceanus
In Greek mythology, Oceanus ( ; , also , , or ) was a Titans, Titan son of Uranus (mythology), Uranus and Gaia, the husband of his sister the Titan Tethys (mythology), Tethys, and the father of the River gods (Greek mythology), river gods ...
and one of
Zeus
Zeus (, ) is the chief deity of the List of Greek deities, Greek pantheon. He is a sky father, sky and thunder god in ancient Greek religion and Greek mythology, mythology, who rules as king of the gods on Mount Olympus.
Zeus is the child ...
' lovers.
Lysithea did not receive its present name until 1975; before then, it was simply known as . It was sometimes called "
Demeter
In ancient Greek religion and Greek mythology, mythology, Demeter (; Attic Greek, Attic: ''Dēmḗtēr'' ; Doric Greek, Doric: ''Dāmā́tēr'') is the Twelve Olympians, Olympian goddess of the harvest and agriculture, presiding over cro ...
"
from 1955 to 1975.
It belongs to the
Himalia group, moons orbiting between 11 and 13
Gm from Jupiter at an inclination of about 28.3°.
Its orbital elements are as of January 2000. They are continuously changing due to
solar and planetary perturbations. It is gray in color (B−V=0.72, V−R=0.36, V−I=0.74) and intermediate between C-type and P-type asteroids.
See also
*
Irregular satellites
*
Jupiter's moons in fiction
References
External links
Lysithea: Overviewb
NASA's Solar System Exploration(by
Scott S. Sheppard)
{{DEFAULTSORT:Lysithea (Moon)
Himalia group
Moons of Jupiter
Irregular satellites
19380706
Discoveries by Seth B. Nicholson
Moons with a prograde orbit