Francisco (moon)

moon of Uranus
Discovered by Matthew J. Holman,
John J. Kavelaars,
Dan Milisavljevic,
and Brett J. Gladman
Discovered in August 13, 2003
Orbital characteristics
Semi-major axis 4,276,000 km
Eccentricity 0.1459
Orbital period 266.56 d
Inclination 145° (to the ecliptic)[1]
Is a moon of Uranus
Physical characteristics
Mean diameter ~22 km (estimate)[1]
Surface area ~1500 km² (estimate)
Volume ~6000 km³ (estimate)
Mass 1.4×1015 kg (estimate)
Mean density ~1.5 g/cm³ (estimate)
Surface gravity ~0.0025 m/s2 (estimate)
Escape velocity ~0.0055 km/s (estimate)
Rotation period ?
Axial tilt
Albedo 0.04 (assumed)[1]
Surface temp.
min mean max
~65 K (estimate)
Atmospheric pressure 0 kPa

Francisco is the closest non-spherical moon of Uranus.

Francisco was found by Matthew J. Holman, et al. and Brett J. Gladman, et al. in 2003 from pictures taken in 2001 and given the designation S/2001 U 3. Confirmed as Uranus XXII, it was named after a lord in William Shakespeare's play The Tempest.[2]

Related pagesEdit


  1. 1.0 1.1 1.2 Scott S. Sheppard, David C. Jewitt, and Jan Kleyna An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness, The Astronomical Journal, 129 (2005), pages 518–525 . Preprint
  2. "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 2006-08-06.

Other websitesEdit