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Thelxinoe (moon)

Thelxinoe (moon)

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Thelxinoe (/θɛlkˈsɪnˌ/ thelk-SIN-o-ee; Greek: Θελξινόη), also known as Jupiter XLII, is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2004 from pictures taken in 2003, and originally received the temporary designation S/2003 J 22.[1][2]

Discovered by Scott S. Sheppard
Discovery date 2003
Orbital characteristics
Mean orbit radius
20.454 million km
597.607 days
Physical characteristics
Mean radius
~1 km

Thelxinoe is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 20,454 Mm in 597.607 days, at an inclination of 151° to the ecliptic (153° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2685.

It was named in March 2005 after Thelxinoe, one of the four original Muses according to some Greek writers, and a daughter of Zeus (Jupiter) by Mnemosyne.[3]

Thelxinoe belongs to the Ananke group, retrograde irregular moons that orbit Jupiter between 19.3 and 22.7 Gm, at inclinations of roughly 150°.


  1. ^ Daniel W. E. Green (January 25, 2004). "IAUC 8276: S/2003 J 22". International Astronomical Union. 
  2. ^ Brian G. Marsden (January 24, 2004). "MPEC 2004-B41: S/2003 J 22". International Astronomical Union Minor Planet Center. 
  3. ^ Daniel W. E. Green (March 30, 2005). "IAUC 8502: Satellites of Jupiter". International Astronomical Union. 

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