Saturn: the "Ringed Beauty" and His Moons
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Mimas-N00077782.jpgOccultation? (1)53 visiteLa cosa più semplice da dire in sede di interpretazione di questo frame è che si dovrebbe trattare di una - davvero splendida - "occultazione", ossìa del transito di un Corpo Celeste sulla medesima linea visuale in cui si trova Mimas (dal punto di vista della Sonda Cassini) ed il susseguente verificarsi di una mini-eclisse.
Ma che cos'è il Corpo Celeste che viene "occultato" da Mimas? E' una stella? Secondo noi no, poichè le stelle, anche adoperando elevatissimi detail mgnf, non vengono risolte in maniera tale da mostrare dei dettagli superficiali.
Questo oggetto, invece, anche senza usare uno stretch eccessivo, si risolve in un disco e "sembra" evidenziare lievi/tenui dettagli superficiali.
Si tratta dunque di un Corpo Celeste molto più vicino all'Osservatore di quanto non lo sarebbe una stella. Che cosa sarà?
Con ogni probabilità, si tratta di un altra Luna Saturniana che, come già è accaduto tante volte in passato, viene colta in transito ravvicinato (un transito ravvicinato, come ovvio, solo apparente e determinato dal particolare movimento e relativo angolo visuale di Cassini) presso un'altra Luna del Gigante Anellato (pensate al bellissimo passaggio ravvicinato - con relativa occultazione - fra Rhea e Dione).
Oppure, se volete, si può anche pensare a qualcosa di più "esotico"...Vedete Voi!
Caption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.345.535 Km away. and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077783.jpgOccultation? (2)53 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.345.325 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077784.jpgOccultation? (3)61 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.345.112 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077785.jpgOccultation? (4)53 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.344.896 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077786.jpgOccultation? (5)55 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.344.677 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077787.jpgOccultation? (6)55 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.344.455 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077788.jpgOccultation? (7)53 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.344.230 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00077789.jpgOccultation? (8)53 visiteCaption NASA:"(...) The camera was pointing toward Mimas that, at the time, was at approximately 1.344.003 Km away, and the image was taken using the CL1 and CL2 filters (...)".
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Mimas-N00083734.jpgMimas (natural colors - elab. Lunexit)55 visitenessun commentoMareKromium
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Mimas-N00084762.jpgMimas: the "Egg-like Moon"53 visiteMimas ID:"Mimas is made primarily of water-ice. Its surface is heavily cratered, indicating that its impact features may date back to the time of the moon's creation.
One of the craters, named Herschel, is surprisingly large - nearly one-third the moon's entire diameter. Herschel is 10 Km (about 6 miles) deep, with a central mountain that rises 6 Km (about 3,7 miles) above the crater floor.
Traces of fracture marks can be seen on the opposite side of Mimas.
Mimas was discovered in 1789 by William Herschel; its mean distance from Saturn is approximately equal to 185.520 Km (such as about 115.277 miles); its mass is: 3.81 x 1019 Kg (such as 8.3 x 1019 lbs) and its dimensions are: 418 x 392 x 383 Km (260 x 244 x 238 miles)".
Period of Orbit around Saturn: 22.6 hoursMareKromium
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Mimas-N00085241.jpgMimas is looking away...54 visiteCaption NASA:"N00085241.jpg was taken on June 28, 2007 and received on Earth June 28, 2007. The camera was pointing toward Mimas that, at the time, was approx. 181.809 Km away. The image was taken using the P0 and GRN filters.
This image has not been validated or calibrated".MareKromium
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Mimas-N00121934-3D-MF.jpgMimas and the Rings (Hi-Def-3D; credits and Copyright: Dr M. Faccin and Lunar Explorer Italia)54 visitenessun commentoMareKromium
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