Ophelia

	Ophelia
	Ophelias upptäcktsbild
Upptäckt
Upptäckare	Richard J. Terrile / Voyager 2
Upptäcktsdatum	20 januari, 1986
Beteckningar
Alternativnamn	S/1986 U 8
Uppkallad efter	Ofelia
Omloppsbana
Halv storaxel	53 763,390 ± 0,847 km
Excentricitet	0,00992 ± 0,000107
Siderisk omloppstid	0,37640039 ± 0,00000357 d
Inklination	0,10362 ± 0,055° (till Uranus ekvator)
Måne till	Uranus
Fysikaliska data
Dimensioner	54 × 38 × 38 km
Area	~6600 km²
Volym	~41 000 km³
Massa	~5,1 × 1016 kg
Medeldensitet	~1,3 g/cm³
Ytgravitation (ekvatorn)	~0,0070 m/s²
Flykthastighet	~0,018 km/s
Rotationsperiod	Bunden rotation
Albedo	0,08 ± 0,01
Temperatur	~64 K
Skenbar magnitud	+23,26

För andra betydelser, se Ophelia (olika betydelser).

Ophelia är en av Uranus månar. Den upptäcktes 1986 vid passagen av den amerikanska rymdsonden Voyager 2, och fick den tillfälliga beteckningen S/1986 U 8. Den är också betecknad Uranus VII.

Ophelia är uppkallad efter Polonius dotter i William Shakespeares pjäs Hamlet.

Man vet knappt någonting annat om Ophelia än om dess omloppsbana^[1], dess radie på 23 km^[2] och den geometriska albedon på 0,08^[3]. På bilder tagna av Voyager 2, så ser Cordelia ut att vara avlång till formen, den längre axeln pekar mot Uranus. Axelvärderna av Cordelias form är 0,7 ± 0,3.^[2]

Cordelia agerar som en inre herdemåne till Uranus Epsilonring.^[5]

Källor

^ [a b c d e] Jacobson, R.A. (15 december 1998). ”The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager2 Observations”. The Astronomical Journal "115": ss. 1195-1199. doi:10.1086/300263. http://adsabs.harvard.edu/abs/1998AJ....115.1195J.
^ [a b c d] Karkoschka, Erich (15 december 2001). ”Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites”. Icarus "151": ss. 69–77. doi:10.1006/icar.2001.6597. http://adsabs.harvard.edu/abs/2001Icar..151...69K.
^ [a b] Karkoschka, Erich (15 december 2001). ”Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope”. Icarus "151": ss. 51–68. doi:10.1006/icar.2001.6596. http://adsabs.harvard.edu/abs/2001Icar..151...51K.
^ Britt Gynther och Stig Carlson (2006). Faktakalendern 2007. Semic. sid. 79
^ Esposito, L. W. (15 december 2002). ”Planetary rings”. Reports On Progress In Physics "65": ss. 1741–1783. Arkiverad från originalet den 16 juni 2020. https://web.archive.org/web/20200616073630/https://hkvalidate.perfdrive.com/captcha?ssa=c3f22f43-1b05-49c0-b512-7258ce109b98&ssb=b64mpk1g5zpk0pp5bmpd0f3mz&ssc=http%3A%2F%2Fiopscience.iop.org%2F%2Fabstract%2F0034-4885%2F65%2F12%2F201&ssd=032429776486416&sse=ibp%40fjiladmlmla&ssf=9fdb51f1252be180d3e222fb0dbf4ad8778eb4a8&ssg=58694441-d665-4a78-b37d-4e1dbbd2fa5c&ssh=fae5edf9-5b78-4210-a145-35ee8afc4da9&ssi=3f116cc7-8427-4cba-8b75-678e2866c8be&ssj=20e6779a-ad69-4f41-95b7-190ac5d1c1dc&ssk=support%40shieldsquare.com&ssl=418220199399&ssm=86089471003809836105874142622933&ssn=db07be1a67518e02f2626518d3373803edf393e9393d-ef9e-4944-868f79&sso=ce31f39e-50d966be57a2329d20682f0ee7c0781127111e979c9e3b47&ssp=13036241841592253725159221755409225&ssq=61709339299082377220792990853922990208194&ssr=MjA3LjI0MS4yMjUuMTU5&sss=Mozilla%2F5.0%20%28compatible%3B%20Googlebot%2F2.1%3B%20+http%3A%2F%2Fwww.google.com%2Fbot.html%29&sst=Mozilla%2F5.0%20%28Windows%20NT%2010.0%3B%20Win64%3B%20x64%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F74.0.3729.169%20Safari%2F537.36&ssu=Chrome%2F5.0%20%28iPhone%3B%20U%3B%20CPU%20iPhone%20OS%203_0%20like%20Mac%20OS%20X%3B%20en-us%29%20AppleWebKit%2F528.18%20%28KHTML%2C%20like%20Gecko%29%20Version%2F4.0%20Mobile%2F7A341%20Safari%2F528.16&ssv=v34vumln3ur3943&ssw=&ssx=126968914553564&ssy=hcj%40hjhmokckfgfdkj%40jolcjd%40jojlccdnopmbc%40&ssz=449466d2a20b056. Läst 30 november 2007.

[Jacobson1998-1] [a b c d e] Jacobson, R.A. (15 december 1998). ”The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager2 Observations”. The Astronomical Journal "115": ss. 1195-1199. doi:10.1086/300263. http://adsabs.harvard.edu/abs/1998AJ....115.1195J.

[Karkoschka2001b-2] [a b c d] Karkoschka, Erich (15 december 2001). ”Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites”. Icarus "151": ss. 69–77. doi:10.1006/icar.2001.6597. http://adsabs.harvard.edu/abs/2001Icar..151...69K.

[Karkoschka2001a-3] [a b] Karkoschka, Erich (15 december 2001). ”Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope”. Icarus "151": ss. 51–68. doi:10.1006/icar.2001.6596. http://adsabs.harvard.edu/abs/2001Icar..151...51K.

[4] Britt Gynther och Stig Carlson (2006). Faktakalendern 2007. Semic. sid. 79

[Esposito2002-5] Esposito, L. W. (15 december 2002). ”Planetary rings”. Reports On Progress In Physics "65": ss. 1741–1783. Arkiverad från originalet den 16 juni 2020. https://web.archive.org/web/20200616073630/https://hkvalidate.perfdrive.com/captcha?ssa=c3f22f43-1b05-49c0-b512-7258ce109b98&ssb=b64mpk1g5zpk0pp5bmpd0f3mz&ssc=http%3A%2F%2Fiopscience.iop.org%2F%2Fabstract%2F0034-4885%2F65%2F12%2F201&ssd=032429776486416&sse=ibp%40fjiladmlmla&ssf=9fdb51f1252be180d3e222fb0dbf4ad8778eb4a8&ssg=58694441-d665-4a78-b37d-4e1dbbd2fa5c&ssh=fae5edf9-5b78-4210-a145-35ee8afc4da9&ssi=3f116cc7-8427-4cba-8b75-678e2866c8be&ssj=20e6779a-ad69-4f41-95b7-190ac5d1c1dc&ssk=support%40shieldsquare.com&ssl=418220199399&ssm=86089471003809836105874142622933&ssn=db07be1a67518e02f2626518d3373803edf393e9393d-ef9e-4944-868f79&sso=ce31f39e-50d966be57a2329d20682f0ee7c0781127111e979c9e3b47&ssp=13036241841592253725159221755409225&ssq=61709339299082377220792990853922990208194&ssr=MjA3LjI0MS4yMjUuMTU5&sss=Mozilla%2F5.0%20%28compatible%3B%20Googlebot%2F2.1%3B%20+http%3A%2F%2Fwww.google.com%2Fbot.html%29&sst=Mozilla%2F5.0%20%28Windows%20NT%2010.0%3B%20Win64%3B%20x64%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F74.0.3729.169%20Safari%2F537.36&ssu=Chrome%2F5.0%20%28iPhone%3B%20U%3B%20CPU%20iPhone%20OS%203_0%20like%20Mac%20OS%20X%3B%20en-us%29%20AppleWebKit%2F528.18%20%28KHTML%2C%20like%20Gecko%29%20Version%2F4.0%20Mobile%2F7A341%20Safari%2F528.16&ssv=v34vumln3ur3943&ssw=&ssx=126968914553564&ssy=hcj%40hjhmokckfgfdkj%40jolcjd%40jojlccdnopmbc%40&ssz=449466d2a20b056. Läst 30 november 2007.

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