Autonoe (moon)

Autonoe
Provisional or systematic name	S / 2001 J 1
Central body	Jupiter
Properties of the orbit
Major semi-axis	23,039,000 km
Periapsis	15,344,000 km
Apoapsis	30,734,000 km
eccentricity	0.334
Orbit inclination	152.9 °
Orbital time	762.70 d
Mean orbital velocity	2.20 km / s
Physical Properties
Albedo	0.04
Apparent brightness	22.0 likes
Medium diameter	4 km
Dimensions	9.0 × 10 13 kg
Acceleration of gravity on the surface	≈ 0 m / s 2
Escape speed	≈ 0 m / s
discovery
Explorer	IFA Hawaii
Date of discovery	December 10, 2001

Autonoe (also Jupiter XXVIII) is one of the smaller outer moons of the planet Jupiter .

discovery

Autonoe was discovered by astronomers at the University of Hawaii on December 10, 2001 . It was initially given the provisional designation S / 2001 J 1.

The moon was named after Autonoë , the sister of Semele , a lover of Zeus from Greek mythology .

Orbit data

Autonoe orbits Jupiter at a mean distance of 23,039,000 km in 762 days and 17 hours. The track has an eccentricity of 0.334. With an inclination of 152.9 ° the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.

Due to its orbital properties, Autonoe is assigned to the Pasiphae group , named after the Jupiter moon Pasiphae .

Physical data

Autonoe has a mean diameter of about 4 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. Autonoe has a very dark surface with an albedo of 0.04, i.e. that is, only 4% of the incident sunlight is reflected. Their apparent brightness is 22.0 ^m .

Web links

• MPEC 2002-J54: Eleven new Satellites of Jupiter May 15, 2002 (discovery)
• IAUC 7900: Satellites of Jupiter May 16, 2002 (discovery)
• MPEC 2002-V03: S / 2001 J 1 November 1, 2002 (rediscovery)
• IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)

before	Jupiter moons	after that
Practice	Autonoe	Thyone