Astronomy:Francisco (moon)

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Short description: Moon of Uranus
Francisco
Discovery
Discovered by
Discovery dateAugust 13, 2001[1][2] (confirmed in 2003[1][3])
Designations
Designation
Uranus XXII
Pronunciation/frænˈsɪskoʊ/[4]
AdjectivesFranciscan, Fransiscian, Francisconian
Orbital characteristics
Mean orbit radius4,276,000 km[5][6]
Eccentricity0.1459[6]
Orbital period266.56 d
Inclination145° (to the ecliptic)[5]
Satellite ofUranus
Physical characteristics
Mean radius11 km (estimate)[7]
Surface area~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)
Rotation period?
Axial tilt?
Albedo0.04 (assumed)[7]
Physics~65 K (estimate)


Francisco 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.[8]

Animation of Francisco's orbit around Uranus.
   Uranus
   Sycorax
   Francisco
   Caliban
   Stephano
   Trinculo

See also

  • Uranus' natural satellites

References

  1. ↑ 1.0 1.1 Green, Daniel W. E. (2003-10-07). "IAUC 8216: S/2001 U 3". IAU Circular. http://www.cbat.eps.harvard.edu/iauc/08200/08216.html. 
  2. ↑ Blue, Jennifer (2008-10-16). "Planet and Satellite Names and Discoverers". Working Group for Planetary System Nomenclature (WGPSN). http://planetarynames.wr.usgs.gov/append7.html#UranianSystem. 
  3. ↑ Sheppard, Scott S.. "New Satellites of Uranus Discovered in 2003". Institute for Astronomy at the University of Hawaii. http://www.ifa.hawaii.edu/~sheppard/satellites/uranus2003.html. 
  4. ↑ Benjamin Smith (1903) The Century Dictionary and Cyclopedia
  5. ↑ 5.0 5.1 Sheppard, Jewitt & Kleyna 2005, p. 523, Table 3.
  6. ↑ 6.0 6.1 Jacobson, R.A. (2003) URA067 (2007-06-28). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. http://ssd.jpl.nasa.gov/?sat_elem#uranus. 
  7. ↑ 7.0 7.1 Sheppard, Jewitt & Kleyna 2005, p. 523, Table 3 ... ri (km) ... 11 ... i Radius of satellite assuming a geometric albedo of 0.04.
  8. ↑ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. http://planetarynames.wr.usgs.gov/append7.html. 
  • Sheppard, S. S.; Jewitt, D.; Kleyna, J. (2005). "An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness". The Astronomical Journal 129 (1): 518–525. doi:10.1086/426329. Bibcode: 2005AJ....129..518S. 

External links




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