Isonoe (moon)

Isonoe /aɪˈsɒnoʊ.iː/, also known as Jupiter XXVI, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 6.[5][1]

Isonoe

Isonoe imaged by the Canada-France-Hawaii Telescope in December 2001
Discovery [1]
Discovered by	Scott S. Sheppard David C. Jewitt Yanga R. Fernandez Eugene A. Magnier
Discovery site	Mauna Kea Observatory
Discovery date	23 November 2000
Designations
Designation	Jupiter XXVI
Pronunciation	/aɪˈsɒnoʊ.iː/
Named after	Ισονόη Isonoē
Alternative names	S/2000 J 6
Adjectives	Isonoean /ˌaɪsənoʊˈiːən/
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Observation arc	17.46 yr (6,379 days)
Semi-major axis	0.1559024 AU (23,322,670 km)
Eccentricity	0.2263119
Orbital period	–727.65 d
Mean anomaly	148.53423°
Mean motion	0° 31^m 36.216^s / day
Inclination	164.45891° (to ecliptic)
Longitude of ascending node	203.99552°
Argument of perihelion	219.75296°
Satellite of	Jupiter
Group	Carme group
Physical characteristics[3]
Mean diameter	4 km
Albedo	0.04 (assumed)
Apparent magnitude	22.5[4]
Absolute magnitude (H)	16.0[2]

Isonoe is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 23,833,000 km in 751.647 days, at an inclination of 166° to the ecliptic (169° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.166.

It was named in October 2002 after Isonoe, one of the Danaïdes in Greek mythology, and a lover of Zeus (Jupiter).[6]

Isonoe belongs to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.

References

1. MPEC 2001-A28: S/2000 J 2, S/2000 J 3, S/2000 J 4, S/2000 J 5, S/2000 J 6 2001 January 5 (discovery and ephemeris)
2. "M.P.C. 111777" (PDF). Minor Planet Circular. Minor Planet Center. 25 September 2018.
3. "Planetary Satellite Physical Parameters". Jet Propulsion Laboratory. 19 February 2015. Retrieved 27 November 2020.
4. Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. Retrieved 27 November 2020.
5. IAUC 7555: Satellites of Jupiter Archived 2002-09-16 at the Wayback Machine 2001 January 5 (discovery)
6. IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)