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Jupiter LIX, provisionally known as S/2017 J 1, is an outer 
It is a member of the
natural satellite
A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Natural satellites are often colloquially referred to as ''moons'' ...
of Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but slightly less than one-thousandth t ...
on a retrograde orbit
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure). It may also describe other motions such as precession or ...
. It was reported on June 5, 2017 via a Minor Planet Electronic Circular
The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory.
Function
T ...
from the Minor Planet Center. It is believed to be about 2 km in diameter.
It is a member of the Pasiphae group The Pasiphae group is a group of retrograde irregular satellites of Jupiter that follow similar orbits to Pasiphae and are thought to have a common origin.
Their semi-major axes (distances from Jupiter) range between 22.8 and 24.1 million km (th ...
. It has an average orbital distance of 23,547,105 km, with an inclination of 149.2 degrees. Its period is 734.2 days
A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours, 1440 minutes, or 86,400 seconds. In everyday life, the word "day" often refers to a solar day, which is the length between two s ...
.
References
{{DEFAULTSORT:Jupiter 59 Pasiphae group Moons of Jupiter Irregular satellites Discoveries by Scott S. Sheppard 20170224 Moons with a retrograde orbit