| Thelxinoe | |
| Pronounced: | [1] |
| Adjective: | Thelxinoean |
| Named After: | Θελξινόη Thelxĭnoē |
| Discoverer: | Scott S. Sheppard et al. |
| Discovered: | 2003 |
| Mpc Name: | Jupiter XLII |
| Alt Names: | S/2003 J 22 |
| Orbit Ref: |  [2] |
| Inclination: | 151.4° |
| Eccentricity: | 0.221 |
| Arg Peri: | 179.8° |
| Asc Node: | 206.2° |
| Mean Anomaly: | 194.0° |
| Period: | −628.1 days |
| Satellite Of: | Jupiter |
| Group: | Ananke group |
| Magnitude: | 23.5 |
| Mean Diameter: | 2 km |
Thelxinoe, also known as , 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 .[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°.