Eurydome (moon)

Summary

Eurydome
Eurydome-discovery-CFHT-annotated.gif
Discovery images of Eurydome by the Canada-France-Hawaii Telescope in December 2001
Discovery [1]
Discovered byScott S. Sheppard
David C. Jewitt
Yanga R. Fernandez
Discovery siteMauna Kea Observatory
Discovery date9 December 2001
Designations
Designation
Jupiter XXXII
Pronunciation/jʊˈrɪdəm/
Named after
Ευρυδόμη Eyry̆domē
S/2001 J 4
AdjectivesEurydomean /ˌjʊrɪdəˈmən/
Orbital characteristics[2]
Epoch 17 December 2020 (JD 2459200.5)
Observation arc16.42 yr (5,998 days)
0.1551793 AU (23,214,490 km)
Eccentricity0.2975371
–722.59 d
169.85622°
0° 29m 53.536s / day
Inclination150.28897° (to ecliptic)
31.50527°
306.06428°
Satellite ofJupiter
GroupPasiphae group
Physical characteristics[4]
Mean diameter
3 km
Albedo0.04 (assumed)
22.7[3]
16.2[2]

Eurydome /jʊˈrɪdəm/, also known as Jupiter XXXII, is a natural satellite of Jupiter. It was discovered concurrently with Hermippe by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2001, and given the temporary designation S/2001 J 4.[5][1]

Eurydome is about 3 kilometres in diameter, and orbits Jupiter at an average distance of 23,231,000 km in 722.59 days, at an inclination of 149° to the ecliptic (147° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.3770.

It was named in August 2003 after Eurydome in Greek mythology, who is sometimes described as the mother of the Graces by Zeus (Jupiter).[6]

Eurydome belongs to the Pasiphae group, irregular retrograde moons orbiting Jupiter at distances ranging between 22.8 and 24.1 Gm, and with inclinations ranging between 144.5° and 158.3°.

Discovery image of Hermippe and Eurydome together, taken by the CFHT in December 2001

References

  1. ^ a b MPEC 2002-J54: Eleven New Satellites of Jupiter 2002 May (discovery and ephemeris)
  2. ^ a b "M.P.C. 127088" (PDF). Minor Planet Circular. Minor Planet Center. 17 November 2020.
  3. ^ Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. Retrieved 26 November 2020.
  4. ^ "Planetary Satellite Physical Parameters". Jet Propulsion Laboratory. 19 February 2015. Retrieved 26 November 2020.
  5. ^ IAUC 7900: Satellites of Jupiter 2002 May (discovery)
  6. ^ IAUC 8177: Satellites of Jupiter, Saturn, Uranus Archived July 9, 2008, at the Wayback Machine 2003 August (naming the moon)