Isonoe (moon)


Isonoe imaged by the Canada-France-Hawaii Telescope in December 2001
Discovery [1]
Discovered byScott S. Sheppard
David C. Jewitt
Yanga R. Fernandez
Eugene A. Magnier
Discovery siteMauna Kea Observatory
Discovery date23 November 2000
Jupiter XXVI
Named after
Ισονόη Isonoē
S/2000 J 6
AdjectivesIsonoean /ˌsənˈən/
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Observation arc17.46 yr (6,379 days)
0.1559024 AU (23,322,670 km)
–688.61 d
0° 31m 36.216s / day
Inclination164.45891° (to ecliptic)
Satellite ofJupiter
GroupCarme group
Physical characteristics[4]
Mean diameter
4 km
Albedo0.04 (assumed)

Isonoe /ˈsɒn./, 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 is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 23,833,000 km in 688.61 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°.


  1. ^ a b 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. ^ a b "M.P.C. 115890" (PDF). Minor Planet Circular. Minor Planet Center. 27 August 2019.
  3. ^ Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. Retrieved 27 November 2020.
  4. ^ "Planetary Satellite Physical Parameters". Jet Propulsion Laboratory. 19 February 2015. 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)