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Eukelade
Images of Eukelade taken by Scott Sheppard on 4 March 2003
Discovery
Discovered byScott S. Sheppard et al.
Discovery date2003
Designations
Designation
Jupiter XLVII
Pronunciation/juːˈkɛlədiː/
Named after
Ευκελάδη Eykeladē
S/2003 J 1
AdjectivesEukeladean /ˌjuːkɪləˈdiːən/
Orbital characteristics[1]
Epoch 2026-01-01
Periapsis14.3 million km
Apoapsis30.7 million km
(2026-Jan-17)[2]
22.5 million km
Eccentricity0.363
−689.2 days
170°
Inclination165.2°
206.3°
80.3°
Satellite ofJupiter
GroupCarme group
Physical characteristics
4 km[3]
Spectral type
B–V = 0.79 ± 0.07, V–R = 0.50 ± 0.07[4]
22.6
15.9[5]

Eukelade /juːˈkɛlədiː/, also known as Jupiter XLVII, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaiʻi led by Scott S. Sheppard in 2003, and received the temporary designation S/2003 J 1.[6][7][8]

Eukelade is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 22.5 million km in 689 days, at an inclination of 165° to the ecliptic, in a retrograde direction and with an eccentricity of 0.363.[1] Eukelade next comes to apojove (farthest distance from Jupiter) on 17 January 2026 when it will be 0.205 AU (30.7 million km; 19.1 million mi) from Jupiter.[2]

It was named in March 2005 after Eucelade - according to John Tzetzes, listed by some (unnamed) Greek writers as one of the Muses.[9] The name ends in an "e" because the orbit is retrograde.

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

References

[edit]
  1. ^ a b Horizons output. "Jovian Osculating Orbital Elements for Eukelade (547)". Retrieved 2025-12-20.
  2. ^ a b "Apojove on 2026-Jan-17". JPL Horizons. Retrieved 2025-12-22.
  3. ^ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
  4. ^ Graykowski, Ariel; Jewitt, David (2018-04-05). "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. ^ "M.P.C. 127088" (PDF). Minor Planet Circular. Minor Planet Center. 17 November 2020.
  6. ^ IAUC 8087: Satellites of Jupiter 2003 March 4 (discovery)
  7. ^ MPEC 2003-E11: S/2003 J 1, 2003 J 2, 2003 J 3, 2003 J 4, 2003 J 5, 2003 J 6, 2003 J 7 2003 March 4 (discovery and ephemeris)
  8. ^ MPEC 2003-E29: S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6 2003 April 3 (revised ephemeris)
  9. ^ * Marta Cardin, Olga Tribulato: Enumerating the Muses: Tzetzes in Hes. Op. 1 and the Parody of Catalogic Poetry in Epicharmus. In: Marco Ercoles, Lara Pagani, Filippomaria Pontani, Giuseppe Ucciardello: Approaches to Greek Poetry: Homer, Hesiod, Pindar, and Aeschylus in Ancient Exegesis (= Trends in Classics. Supplementary Volumes 73). De Gruyter, Berlin/Boston 2019, pages 161–192; here page 171.
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