Thelxinoe (moon)

Thelxinoe
Provisional or systematic name	S / 2003 J 22
Central body	Jupiter
Properties of the orbit
Major semi-axis	21,162,000 km
Periapsis	16,485,000 km
Apoapsis	25,839,000 km
eccentricity	0.2206
Orbit inclination	151.417 °
Orbital time	628.09 d
Mean orbital velocity	2.45 km / s
Physical Properties
Albedo	0.04
Apparent brightness	23.5 likes
Medium diameter	≈ 2 km
Dimensions	≈ 1.5 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	February 9, 2003

Thelxinoe (Jupiter XLII) is one of the smaller moons of the planet Jupiter .

discovery

Thelxinoe was discovered in 2004 on photographs taken on February 9, 2003 by astronomers at the University of Hawaii. On March 30, 2005 the moon was officially named Thelxinoe by the International Astronomical Union (IAU).

The moon was named after Thelxinoe, one of the titanic muses .

Orbit data

Thelxinoe orbits Jupiter at a mean distance of 21,162,000 km in 628 days and 43 minutes. The track has an eccentricity of 0.2206. With an inclination of 151.4 ° from the local Laplace plane , the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.

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

Physical data

Thelxinoe has a diameter of about 2 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. It 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 23.5 ^m .

Web links

• MPEC 2004-B41: S / 2003 J 22 January 24, 2004 (discovery)
• IAUC 8276: S / 2003 J 22 January 25, 2004 (discovery)
• MPEC 2004-B82: S / 2003 J 22 January 31, 2004 (rediscovery)
• IAUC 8502: Satellites of Jupiter March 30, 2005 (numbering and naming)