Perdita (moon): Difference between revisions
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| satellite_of = [[Uranus]] | | satellite_of = [[Uranus]] | ||
| mean_radius = {{val|13.3|0.7|u=km}}{{refn|name=radius}} | | mean_radius = {{val|13.3|0.7|u=km}}{{refn|name=radius}} | ||
| surface_area = ~{{val| | | surface_area = ~{{val|2200|u=km2}}{{efn|name=calculated}} | ||
| volume = ~{{val| | | volume = ~{{val|9900|u=km3}}{{efn|name=calculated}} | ||
| mass = ~{{val|4. | | mass = ~{{val|4.9|-|12|e=15|u=kg}}{{efn|name=calculated}} | ||
| density = | | density = 0.5{{sfn|French|Showalter|2012}}–1.2{{sfn|French|Showalter|2012}}{{sfn|Ćuk et al.|2022}} g/cm{{sup|3}} | ||
| surface_grav = ~{{Gr|4.93e-6|13.3}}–{{Gr| | | surface_grav = ~{{Gr|4.93e-6|13.3}}–{{Gr|11.8e-6|13.3}} [[Acceleration|m/s<sup>2</sup>]]{{efn|name=calculated}} | ||
| escape_velocity = ~{{V2|4.93e-6|13.3}}–{{V2| | | escape_velocity = ~{{V2|4.93e-6|13.3}}–{{V2|11.8e-6|13.3}} km/s{{efn|name=calculated}} | ||
| rotation = synchronous{{sfn|Karkoschka, Voyager|2001}} | | rotation = synchronous{{sfn|Karkoschka, Voyager|2001}} | ||
| axial_tilt = zero{{sfn|Karkoschka, Voyager|2001}} | | axial_tilt = zero{{sfn|Karkoschka, Voyager|2001}} | ||
| Line 30: | Line 30: | ||
'''Perdita''' {{IPAc-en|ˈ|p|ɜːr|d|ə|t|ə}} is an [[inner satellite]] of [[Uranus]]. Perdita's discovery was very complicated, as the first photographs of Perdita were taken by the ''[[Voyager 2]]'' spacecraft in 1986, but it was not recognized from the photographs for more than a decade. In 1999, the moon was noticed by [[Erich Karkoschka]] and reported.{{sfn|Karkoschka, Voyager|2001}}{{sfn|IAUC 7171}} But because no further pictures could be taken to confirm its existence, it was officially demoted in 2001.{{sfn|Foust|2001}} However, in 2003, pictures taken by the [[Hubble Space Telescope]] managed to pick up an object where Perdita was supposed to be, finally confirming its existence.{{sfn|Showalter|Lissauer|2006}}{{sfn|IAUC 8194}} | '''Perdita''' {{IPAc-en|ˈ|p|ɜːr|d|ə|t|ə}} is an [[inner satellite]] of [[Uranus]]. Perdita's discovery was very complicated, as the first photographs of Perdita were taken by the ''[[Voyager 2]]'' spacecraft in 1986, but it was not recognized from the photographs for more than a decade. In 1999, the moon was noticed by [[Erich Karkoschka]] and reported.{{sfn|Karkoschka, Voyager|2001}}{{sfn|IAUC 7171}} But because no further pictures could be taken to confirm its existence, it was officially demoted in 2001.{{sfn|Foust|2001}} However, in 2003, pictures taken by the [[Hubble Space Telescope]] managed to pick up an object where Perdita was supposed to be, finally confirming its existence.{{sfn|Showalter|Lissauer|2006}}{{sfn|IAUC 8194}} | ||
Following its discovery in 1999, it was given the temporary designation of '''S/1986 | Following its discovery in 1999, it was given the temporary designation of '''S/1986 U 10'''.{{sfn|IAUC 7171}} It was named Perdita ([[Latin]] for 'lost') after [[Perdita (The Winter's Tale)|the daughter]] of [[Leontes]] and Hermione in [[William Shakespeare]]'s play ''[[The Winter's Tale]]''. The moon is also designated '''Uranus XXV'''.{{sfn|USGS: Planet and Satellite Names and Discoverers}} | ||
[[File:Uranus' Satellite 1986 U10 Discovery Image.jpg|thumb|left|upright|Discovery image of Perdita taken by ''Voyager 2'' on 23 January 1986. The location of the moon is indicated by the arrow on the upper right.]] | [[File:Uranus' Satellite 1986 U10 Discovery Image.jpg|thumb|left|upright|Discovery image of Perdita taken by ''Voyager 2'' on 23 January 1986. The location of the moon is indicated by the arrow on the upper right.]] | ||
The moon orbits between [[Belinda (moon)|Belinda]] and [[Puck (moon)|Puck]]. The above-mentioned Hubble measurements prove that Perdita does not follow a direct [[Kepler's laws of planetary motion|Keplerian]] motion around Uranus. Instead, it is clearly caught in a 43:44 [[orbital resonance]] with the nearby moon Belinda, and from this resonance it has been determined that Belinda's mass is 26 | The moon orbits between [[Belinda (moon)|Belinda]] and [[Puck (moon)|Puck]]. The above-mentioned Hubble measurements prove that Perdita does not follow a direct [[Kepler's laws of planetary motion|Keplerian]] motion around Uranus. Instead, it is clearly caught in a 43:44 [[orbital resonance]] with the nearby moon Belinda, and from this resonance it has been determined that Belinda's mass is 26<ref>{{Cite conference |last=French |first=Robert S. |last2=Showalter |first2=Mark R. |last3=de Pater |first3=Imke |last4=Lissauer |first4=Jack J. |date=2017-10-01 |title=Orbital and Photometric Analysis of the Inner Uranian Satellites from Hubble Images |url=https://ui.adsabs.harvard.edu/abs/2017DPS....4921419F |volume=49 |pages=214.19}}</ref> or 27{{sfn|Ćuk et al.|2022}} times that of Perdita. It is also close to an 8:7 resonance with [[Rosalind (moon)|Rosalind]].{{sfn|Karkoschka, Voyager|2001}}{{sfn|Showalter|Lissauer|2006}} | ||
Perdita belongs to the Portia group of satellites, which also includes [[Bianca (moon)|Bianca]], [[Cressida (moon)|Cressida]], [[Desdemona (moon)|Desdemona]], [[Portia (moon)|Portia]], [[Juliet (moon)|Juliet]], [[Cupid (moon)|Cupid]], Rosalind, and Belinda.{{sfn|Karkoschka, Hubble|2001}} These satellites have similar orbits and photometric properties.{{sfn|Karkoschka, Hubble|2001}} Little is known about Perdita apart from its orbit,{{sfn|Karkoschka, Voyager|2001}}{{sfn|Showalter|Lissauer|2006}} radius of 13.3 km,{{refn|name=radius|Showalter & Lissauer (2006),{{sfn|Showalter|Lissauer|2006}} as cited in Ćuk et al. (2022).{{sfn|Ćuk et al.|2022}}}} and geometric albedo of 0.08.{{sfn|Karkoschka, Hubble|2001}}{{sfn|Showalter|Lissauer|2006}} | Perdita belongs to the Portia group of satellites, which also includes [[Bianca (moon)|Bianca]], [[Cressida (moon)|Cressida]], [[Desdemona (moon)|Desdemona]], [[Portia (moon)|Portia]], [[Juliet (moon)|Juliet]], [[Cupid (moon)|Cupid]], Rosalind, and Belinda.{{sfn|Karkoschka, Hubble|2001}} These satellites have similar orbits and photometric properties.{{sfn|Karkoschka, Hubble|2001}} Little is known about Perdita apart from its orbit,{{sfn|Karkoschka, Voyager|2001}}{{sfn|Showalter|Lissauer|2006}} radius of 13.3 km,{{refn|name=radius|Showalter & Lissauer (2006),{{sfn|Showalter|Lissauer|2006}} as cited in Ćuk et al. (2022).{{sfn|Ćuk et al.|2022}}}} and geometric albedo of 0.08.{{sfn|Karkoschka, Hubble|2001}}{{sfn|Showalter|Lissauer|2006}} | ||
Latest revision as of 03:14, 29 June 2025
Template:Short description Script error: No such module "infobox".Script error: No such module "Check for unknown parameters".
Perdita Template:IPAc-en is an inner satellite of Uranus. Perdita's discovery was very complicated, as the first photographs of Perdita were taken by the Voyager 2 spacecraft in 1986, but it was not recognized from the photographs for more than a decade. In 1999, the moon was noticed by Erich Karkoschka and reported.Template:SfnTemplate:Sfn But because no further pictures could be taken to confirm its existence, it was officially demoted in 2001.Template:Sfn However, in 2003, pictures taken by the Hubble Space Telescope managed to pick up an object where Perdita was supposed to be, finally confirming its existence.Template:SfnTemplate:Sfn
Following its discovery in 1999, it was given the temporary designation of S/1986 U 10.Template:Sfn It was named Perdita (Latin for 'lost') after the daughter of Leontes and Hermione in William Shakespeare's play The Winter's Tale. The moon is also designated Uranus XXV.Template:Sfn
The moon orbits between Belinda and Puck. The above-mentioned Hubble measurements prove that Perdita does not follow a direct Keplerian motion around Uranus. Instead, it is clearly caught in a 43:44 orbital resonance with the nearby moon Belinda, and from this resonance it has been determined that Belinda's mass is 26[1] or 27Template:Sfn times that of Perdita. It is also close to an 8:7 resonance with Rosalind.Template:SfnTemplate:Sfn
Perdita belongs to the Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Rosalind, and Belinda.Template:Sfn These satellites have similar orbits and photometric properties.Template:Sfn Little is known about Perdita apart from its orbit,Template:SfnTemplate:Sfn radius of 13.3 km,Template:Refn and geometric albedo of 0.08.Template:SfnTemplate:Sfn
See also
Notes
References
Citations
Sources
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External links
- Uranus 'Loses' a Moon: The 'New' Official Moon Count of the Solar System (Archived), Melanie Melton, The Planetary Society, 20 December 2001
Template:Uranus Script error: No such module "Navbox". Template:Solar System moons (compact)
- ↑ Script error: No such module "citation/CS1".