Thelxinoe (moon)

Thelxinoe

Discovery
Discovered by	Scott S. Sheppard et al.
Discovery date	2003
Designations
Designation	Jupiter XLII
Pronunciation	/θɛlkˈsɪnoʊ.iː/[1]
Named after	Θελξινόη Thelxĭnoē
Alternative names	S/2003 J 22
Adjectives	Thelxinoean /ˌθɛlksɪnoʊˈiːən/
Orbital characteristics [2]
Semi-major axis	21162000 km
Eccentricity	0.221
Orbital period (sidereal)	−628.1 days
Mean anomaly	194.0°
Inclination	151.4°
Longitude of ascending node	206.2°
Argument of perihelion	179.8°
Satellite of	Jupiter
Group	Ananke group
Physical characteristics
Mean diameter	2 km
Apparent magnitude	23.5

Thelxinoe /θɛlkˈsɪnoʊ.iː/, 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.^[3][4]

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.^[5]

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

References

1. Noah Webster (1884) A Practical Dictionary of the English Language
2. S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
3. Daniel W. E. Green (January 25, 2004). "IAUC 8276: S/2003 J 22". International Astronomical Union.
4. Brian G. Marsden (January 24, 2004). "MPEC 2004-B41: S/2003 J 22". International Astronomical Union Minor Planet Center.
5. Daniel W. E. Green (March 30, 2005). "IAUC 8502: Satellites of Jupiter". International Astronomical Union.