Euanthe (moon)

Euanthe
Provisional or systematic name	S / 2001 J 7
Central body	Jupiter
Properties of the orbit
Major semi-axis	20,799,000 km
Periapsis	15,973,600 km
Apoapsis	25,624,400 km
eccentricity	0.232
Orbit inclination	148.9 °
Orbital time	620.6 d
Mean orbital velocity	2.44 km / s
Physical Properties
Albedo	0.04
Apparent brightness	22.8 mag
Medium diameter	4 km
Dimensions	4.5 × 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 11, 2001

Euanthe (also Jupiter XXXIII) is one of the smallest known outer moons of the planet Jupiter .

discovery

Euanthe was discovered on December 11, 2001 by astronomers at the University of Hawaii. It was initially given the provisional designation S / 2001 J 7.

The moon was named after Euanthe , who is considered the mother of the Charites from Greek mythology .

Orbit data

Euanthe orbits Jupiter at an average distance of 20,799,000 km in 620 days and 14 hours. The track has an eccentricity of 0.232. With an inclination of 148.9 ° from the local Laplace plane , the orbit is retrograde, i.e. that is, the moon moves around the planet against the direction of rotation of Jupiter.

Due to its orbital properties, Euanthe is assigned to the Ananke group , named after the Jupiter moon Ananke .

Physical data

Euanthe has an average diameter of about 3 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. Euanthe 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 22.8 ^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 2003-A23: S / 2001 J 7 January 5, 2003 (rediscovery)
• IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)

before	Jupiter moons	after that
Eurydome	Euanthe	Euporia