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Stephano - Uranus moon.jpg

Discovered by Brett J. Gladman,
Matthew J. Holman,
John J. Kavelaars,
Jean-Marc Petit,
and Hans Scholl
Discovered in July 18, 1999
Orbital characteristics
Mean radius 8,004,000 km[1]
Eccentricity 0.2295
Orbital period 677.37 d
Inclination 141.81° (to the ecliptic)144°)
Is a moon of Uranus
Physical characteristics
Mean diameter ~32 km (estimate)
Surface area ~3000 km² (estimate)
Volume ~20,000 km3 (estimate)
Mass ~6.0Template:E kg (estimate)
Mean density ~1.5 g/cm3 (estimate)
Surface gravity ~0.0041 m/s2 (estimate)
Escape velocity ~0.0090 km/s (estimate)
Rotation period ?
Axial tilt
Albedo 0.04 (assumed)
Surface temp.
min mean max
~64 K (estimate)
Atmospheric pressure 0 kPa

Stephano is a retrograde irregular satellite of Uranus. It was discovered by Brett J. Gladman, et al. in 1999, and given the provisional designation S/1999 U 2.

Confirmed as Uranus XX, it was named after the drunken butler in William Shakespeare's play The Tempest in August 2000.

The orbital parameters suggest that it may belong to the same dynamic cluster as Caliban, suggesting common origin.

See also[]

  • Uranus' natural satellites
  • Irregular satellites


  1. Stephano on Wikipedia
  • Template:Cite journal

External links[]

so don't be cruel BY ELVIS PRESLEY User:'Oumuamua