Isonoe (moon)
 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 |
| S/2000 J 6 | |
| Adjectives | Isonoean /ˌaɪsənoʊˈiːən/ |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Observation arc | 24 years 2024-12-03 (last obs) |
| 0.1559024 AU (23,322,670 km) | |
| Eccentricity | 0.2263119 |
| –688.61 d | |
| 148.53423° | |
| 0° 31m 36.216s / day | |
| Inclination | 164.45891° (to ecliptic) |
| 203.99552° | |
| 219.75296° | |
| Satellite of | Jupiter |
| Group | Carme group |
| Physical characteristics[3] | |
| 4 km | |
| Albedo | 0.04 (assumed) |
Spectral type | D [4] |
| 22.5[5] | |
| 15.9 (82 obs)[6] | |
Isonoe /aɪˈsɒnoʊ.iː/, also known as Jupiter XXVI, is a little retrograde irregular satellite of Jupiter.
Discovery and Naming
[edit]It was discovered by a team of astronomers from the University of Hawaiʻi led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 6.[7][1]
It was named in October 2002 after Isonoe, one of the Danaïdes in Greek mythology, and a lover of Zeus (Jupiter).[8]
Orbit
[edit]Isonoe orbits Jupiter at an average distance of 23,322,670 km in 691,62 days, at an inclination of 165° to the ecliptic, in a retrograde direction and with an eccentricity of 0.226.
It belongs to the Carme group, made up a tightly of irregular retrograde moons orbiting Jupiter at a distance ranging between 22.7–23.5 million km, at an inclination of about 165°, and eccentricities between 0.24 and 0.28.
Physical characteristics
[edit]Isonoe' estimated diameter is 4 kilometers, assuming an albedo of 4%.
Like the other members of the Carme group (Exception Kalyke) it is light red in color (B–V = 0.78 ± 0.05, V–R = 0.53 ± 0.04),[4] similar to D-type asteroids.
Origin
[edit]Isonoe probably did not form near Jupiter but was captured by Jupiter later.Like the other members of the Carme group, which have similar orbits, Isonoe is probably the remnant of a broken, captured heliocentric asteroid.
References
[edit]- ^ 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)
- ^ "M.P.C. 115890" (PDF). Minor Planet Circular. Minor Planet Center. 27 August 2019.
- ^ "Planetary Satellite Physical Parameters". Jet Propulsion Laboratory. 19 February 2015. Retrieved 27 November 2020.
- ^ a b Graykowski, Ariel; Jewitt, David (5 April 2018). "Colors and Shapes of the Irregular Planetary Satellites". The Astronomical Journal. 155 (4): 184. arXiv:1803.01907. doi:10.3847/1538-3881/aab49b. ISSN 1538-3881.
- ^ Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. Retrieved 27 November 2020.
- ^ MPC Natural Satellites (Select: Orbital Elements)
- ^ IAUC 7555: Satellites of Jupiter Archived 2002-09-16 at the Wayback Machine 2001 January 5 (discovery)
- ^ IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)
Listed in increasing approximate distance from Jupiter | |
| Inner moons | |
| Galilean moons | |
| Themisto | |
| Himalia group (11) |
|
| Carpo group (2) | |
| Valetudo | |
| Ananke group (29) | |
| Carme group (41) | |
| Pasiphae group (22) | |
| See also | |
