Juliet (moon)

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Juliet
Discovery
Discovered by: Stephen P. Synnott / Voyager 2
Discovery date: January 3, 1986
Orbital characteristics
Semi-major axis: 64,358 km
Eccentricity: 0.00059
Orbital period: 0.49307 d
Inclination: 0.056° (to Uranus' equator)
Satellite of: Uranus
Physical characteristics
Dimensions: (150 × 74 km)[1]
Mean radius: 56 km [1]
Surface area: ~28,000 km² (estimate)
Volume: ~430,000 km³ (estimate)
Mass: ~5.6×1017 kg (estimate)
Mean density: ~1.3 g/cm³ (estimate)
Equatorial surface gravity: ~0.016 m/s2 (estimate)
Escape velocity: ~0.040 km/s (estimate)
Rotation period: synchronous (assumed)
Axial tilt: zero (assumed)
Albedo: 0.07 (assumed)
Temperature: ~64 K (estimate)

Juliet (jew'-lee-et, IPA: [ˈdʒuliɛt]) is an inner satellite of Uranus. It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI.[2] It was discovered from the images taken by Voyager 2 on 1986-01-03, and was given the temporary designation S/1986 U 2.[3]

Based on light curves and direct imaging, Juliet is apparently a very elongated object with the lower bound of prolateness being 0.4.[1] Unfortunately, other than its size and orbit, virtually nothing is known about it.

[edit] References

  1. ^ a b c Karkoschka, Erich (2001). "Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope". Icarus 151: 51–68. DOI:10.1006/icar.2001.6596. Retrieved on 2006-08-05. 
  2. ^ Planet and Satellite Names and Discoverers. Gazetteer of Planetary Nomenclature. USGS Astrogeology (July 21 2006). Retrieved on 2006-08-06.
  3. ^ Smith, B. A. (January 16 1986). IAU Circular No. 4164. Retrieved on 2006-08-06.
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