Francisco (moon)
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| Discovery | |||||||
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| Discovered by | Matthew J. Holman, John J. Kavelaars, Dan Milisavljevic, and Brett J. Gladman |
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| 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. |
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| 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]
[change] See also
[change] Other websites
[change] References
- ↑ 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
- ↑ Planet and Satellite Names and Discoverers. Gazetteer of Planetary Nomenclature. USGS Astrogeology (July 21 2006). Retrieved on 6 August 2006.
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| Moons | Ariel ·Belinda ·Bianca ·Caliban ·Cordelia ·Cressida ·Cupid ·Desdemona ·Ferdinand ·Francisco ·Juliet ·Mab ·Margaret ·Miranda ·Oberon ·Ophelia ·Perdita ·Portia ·Prospero ·Puck ·Rosalind ·Setebos ·Stephano ·Sycorax ·Titania ·Trinculo ·Umbriel Other: Arieal features ·Miranda features ·Oberon features ·Titania features ·Puck Craters ·Umbriel craters · Miranda's Verona Rupes ·Umbriel Crater Wunda |
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| Characteristics | Atmosphere ·Rings of Uranus | |
| Discovery | William Herschel ·William Lassell | |
| Exploration | Voyager program ·Voyager 2 | |
| Other | 15 Orionis ·Uranus-crosser asteroid ·In fiction | |
