Francisco (moon)

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Uranus moon 021002 02.jpg
Discovered by
Discovery date August 13, 2001[1][2] (confirmed in 2003[1][3])
Adjectives Francisconian
Orbital characteristics
Mean orbit radius
4,276,000 km[4][5]
Eccentricity 0.1459[5]
266.56 d
Inclination 145° (to the ecliptic)[4]
Satellite of Uranus
Physical characteristics
Mean radius
11 km (estimate)[6]
~1,500 km2 (estimate)
Volume ~6,000 km3 (estimate)
Mass ~7.2×1015 kg (estimate)
Mean density
~1.3 g/cm3 (assumed)
~0.0025 m/s2 (estimate)
~0.0094 km/s (estimate)
Albedo 0.04 (assumed)[6]
Temperature ~65 K (estimate)

Francisco (/frænˈsɪsk/ fran-SIS-koh) is the innermost irregular satellite of Uranus.

Francisco was discovered by Matthew J. Holman, et al. and Brett J. Gladman, et al. in 2003 from pictures taken in 2001 and given the provisional designation S/2001 U 3. Confirmed as Uranus XXII, it was named after a lord in William Shakespeare's play The Tempest.[7]

See also


  1. ^ a b Green, Daniel W. E. (2003-10-07). "IAUC 8216: S/2001 U 3". IAU Circular. Retrieved 2011-01-08. 
  2. ^ Blue, Jennifer (2008-10-16). "Planet and Satellite Names and Discoverers". Working Group for Planetary System Nomenclature (WGPSN). Retrieved 2008-12-19. 
  3. ^ Sheppard, Scott S. "New Satellites of Uranus Discovered in 2003". Institute for Astronomy at the University of Hawaii. Archived from the original on January 16, 2009. Retrieved 2008-12-19. 
  4. ^ a b Sheppard, Jewitt & Kleyna 2005, p. 523, Table 3.
  5. ^ a b Jacobson, R.A. (2003) URA067 (2007-06-28). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Retrieved 2008-01-23. 
  6. ^ a b Sheppard, Jewitt & Kleyna 2005, p. 523, Table 3 ... ri (km) ... 11 ... i Radius of satellite assuming a geometric albedo of 0.04.
  7. ^ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 2006-08-06. 
  • Sheppard, S. S.; Jewitt, D.; Kleyna, J. (2005). "An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness". The Astronomical Journal. 129: 518. arXiv:astro-ph/0410059Freely accessible. Bibcode:2005AJ....129..518S. doi:10.1086/426329. 

External links

  • Francisco profile by NASA's Solar System Exploration
  • David Jewitt pages
  • Uranus' Known Satellites (by Scott S. Sheppard)
  • Ephemeris IAU-NSES
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