Erinome

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Erinome
Erinome-Jewitt-CFHT-annotated.gif
Erinome 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 date23 November 2000
Designations
Designation
Jupiter XXV
Named after
 Erinoma (Greek form unknown) [lower-alpha 1]
S/2000 J 4
Orbital characteristics [2]
Epoch 17 December 2020 (JD 2459200.5)
Observation arc 16.34 yr (5,967 days)
0.1494286  AU (22,354,200 km)
Eccentricity 0.2052559
–682.80 d
98.99686°
0° 31m 38.062s / day
Inclination 164.81976° (to ecliptic)
34.02660°
81.11760°
Satellite of Jupiter
Group Carme group
Physical characteristics [3]
3 km
Albedo 0.04 (assumed)
Spectral type
B–V = 0.72 ± 0.06, V–R = 0.42 ± 0.04 [4]
22.8 [5]
16.0 [2]

    Erinome, also known as Jupiter XXV, 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 4. [6] [1]

    Contents

    Erinome is about 3 kilometres in diameter, and orbits Jupiter at an average distance of 22,986,000 km in 682.80 days, at an inclination of 164° to the ecliptic (162° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2552.

    It 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°.

    Name

    Erinome was named in October 2002 after the mythological Erinoma, a Cypriot woman said by the discovery group to be a "daughter of Celes, compelled by Venus to fall in love with Jupiter." [7] In the surviving myths however, it is actually Jupiter (Zeus) whom Venus (Aphrodite) makes fall in love with Erinoma, in order to ruin her. [lower-alpha 1]

    The final -a vowel of the name was changed to -e to accord with IAU naming conventions for retrograde moons. [7] The story is only known in Latin, and manuscripts have the name as Erinoma, Erinona and Erittoma. The original Greek name, and thus the stressed syllable in Latin, is unknown. It might be a late corruption of Eurynome, [lower-alpha 1] in which case the stress would be on the third syllable ( /ɛrɪˈnəmiː/ ?). Since there is no moon named 'Eurynome' as of 2020, this would not be ambiguous.

    Notes

    1. 1 2 3 See the summary in C. M. C. Green (2007) Roman Religion and the Cult of Diana at Aricia, p. 214, fn. 7, and a fuller account in Joseph Fontenrose (1981) Orion: The Myth of the Hunter and the Huntress, p. 170–172

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    References

    1. 1 2 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. 1 2 "M.P.C. 127088" (PDF). Minor Planet Circular. Minor Planet Center. 17 November 2020.
    3. ↑ "Planetary Satellite Physical Parameters". Jet Propulsion Laboratory. 19 February 2015. Retrieved 27 November 2020.
    4. ↑ 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.
    5. ↑ Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. Retrieved 27 November 2020.
    6. ↑ IAUC 7555: Satellites of Jupiter Archived 2002-09-16 at the Wayback Machine 2001 January 5 (discovery)
    7. 1 2 USGS Gazetteer of Planetary Nomenclature
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