Chaldene (moon)

Chaldene
Provisional or systematic name	S / 2000 J 10
Central body	Jupiter
Properties of the orbit
Major semi-axis	23,179,000 km
Periapsis	17,361,000 km
Apoapsis	28,997,000 km
eccentricity	0.251
Orbit inclination	165.2 °
Orbital time	723.8 d
Mean orbital velocity	2.33 km / s
Physical Properties
Albedo	0.04?
Apparent brightness	22.5 likes
Medium diameter	≈ 3.8 km
Dimensions	≈ 7 × 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	November 26, 2000
Remarks	retrograde orbit

Chaldene (also Jupiter XXI) is one of the smaller outer moons of the planet Jupiter .

discovery

Chaldene was discovered by astronomers at the University of Hawaii on November 26, 2000 . It was initially given the provisional designation S / 2000 J 10.

The moon was named after Chaldene , a lover of Zeus from Greek mythology .

Orbit data

Chaldene orbits Jupiter at a mean distance of 23,100,000 km in 723 days, 16 hours and 48 minutes. The track has an eccentricity of 0.2590. With an inclination of 165.191 °, the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.

Due to its orbital properties, Chaldene is assigned to the Carme group , named after the Jupiter moon Carme .

Physical data

Chaldene has a diameter of about 3.8 km. Its density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. Chaldene has a very dark surface with an albedo of 0.04, i.e. that is, only 4% of the incident sunlight is reflected. Its apparent brightness is 22.5 ^m .

Web links

• IAUC 7555: Satellites of Jupiter January 5, 2001 (discovery)
• MPEC 2001-A29: S / 2000 J 7, S / 2000 J 8, S / 2000 J 9, S / 2000 J 10, S / 2000 J 11 January 5, 2001 (discovery)
• MPEC 2001-T59: S / 2000 J 8, S / 2000 J 9, S / 2000 J 10 October 15, 2001 (rediscovery)
• IAUC 7998: Satellites of Jupiter October 22, 2002 (numbering and naming)

before	Jupiter moons	after that
Taygete	Chaldene	Harpalyke