Helike (moon) explained

Helike
Pronounced:	^[1]
Adjective:	Helikean ^[2]
Named After:	Ἑλίκη Helicē
Discoverer:	Scott S. Sheppard et al.
Discovered:	2003
Mpc Name:	Jupiter XLV
Alt Names:	S/2003 J 6
Orbit Ref:	 ^[3]
Inclination:	154.8°
Eccentricity:	0.156
Arg Peri:	314.7°
Asc Node:	100.3°
Mean Anomaly:	36.2°
Period:	−634.8 days
Satellite Of:	Jupiter
Group:	Ananke group
Magnitude:	22.6
Mean Diameter:	4 km

Helike, also known as , is a moon of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003, and given the temporary designation .^{[4] [5] [6]}

Helike is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 20.54 million kilometres in 601.402 days, at an inclination of 155° to the ecliptic (156° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.1375. Its average orbital speed is 2.48 km/s.

It was named in March 2005 after Helike, one of the nymphs that nurtured Zeus (Jupiter) in his infancy on Crete.^[7]

Helike belongs to the Ananke group.

Notes and References

1. as 'Helice' in Noah Webster (1884) A Practical Dictionary of the English Language
2. Hutchinson (1980) "Base Metal Sulfides", The Continental Crust and Its Mineral Deposits: The Proceedings of a Symposium Held in Honour of J. Tuzo Wilson, Held at Toronto, May 1979, p. 679
3. https://sites.google.com/carnegiescience.edu/sheppard/moons/jupitermoons S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
4. Web site: Daniel W. E. Green . IAUC 8087: Satellites of Jupiter . March 4, 2003 . International Astronomical Union.
5. Web site: Brian G. Marsden . MPEC 2003-E11 : S/2003 J 1, 2003 J 2, 2003 J 3, 2003 J 4, 2003 J 5, 2003 J 6, 2003 J 7 . March 4, 2003 . International Astronomical Union Minor Planet Center.
6. Web site: Brian G. Marsden . MPEC 2003-E29 : S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6 . March 7, 2003 . International Astronomical Union Minor Planet Center.
7. Web site: Daniel W. E. Green . IAUC 8502: Satellites of Jupiter . March 30, 2005 . International Astronomical Union.