Fasciculus:Proteus_(Voyager_2).jpg
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Sua resolutio (836 × 840 elementa imaginalia, magnitudo fasciculi: 64 chiliocteti, typus MIME: image/jpeg)
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Summarium
DescriptioProteus (Voyager 2).jpg |
English: Proteus is the second largest moon of Neptune behind the mysterious Triton. Proteus was discovered only in 1989 by the Voyager 2 spacecraft. This is unusual since Neptune has a smaller moon - Nereid - which was discovered 33 years earlier from Earth. The reason Proteus was not discovered sooner is that its surface is very dark and it orbits much closer to Neptune. Proteus has an odd box-like shape and were it even slightly more massive, its own gravity would cause it to reform itself into a sphere.
Original NASA caption: This image of Neptune's satellite 1989N1 was obtained on Aug. 25, 1989 from a range of 146,000 kilometers (91,000 miles). The resolution is about 2.7 kilometers (1.7 miles) per line pair. The satellite, seen here about half illuminated, has an average radius of some 200 kilometers (120 miles). It is dark (albedo 6 percent) and spectrally grey. Hints of crater-like forms and groove-like lineations can be discerned. The apparent graininess of the image is caused by the short exposure necessary to avoid significant smear.Deutsch: Proteus ist hinter dem geheimnisvollen Triton der zweitgrößte Mond des Neptuns. Proteus wurde erst 1989 durch das Voyager 2 Raumschiff entdeckt. Das ist ungewöhnlich, da Neptun einen kleineren Mond - Nereid - hat, der schon 33 Jahre früher von der Erde aus entdeckt wurde. Der Grund für Proteus' späte Entdeckung war seine sehr dunkle Oberfläche. Auch seine Umlaufbahn ist viel näher bei Neptun als die von Nereid. Proteus hat eine ungewöhnliche kastenartige Form und wäre er nur wenig masserreicher, würde ihn seine eigene Schwerkraft in eine Kugel umformen. |
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Fons | https://www.nasa.gov/history/30-years-ago-voyager-2-explores-neptune/ | ||||||
Auctor | Voyager 2, NASA | ||||||
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This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA00062. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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Items portrayed in this file
depicts Anglica
25 Augusti 1989
Historia fasciculi
Presso die vel tempore fasciculum videbis, sicut tunc temporis apparuit.
Dies/Tempus | Minutio | Dimensiones | Usor | Sententia | |
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recentissima | 20:54, 1 Ianuarii 2010 | 836 × 840 (64 chiliocteti) | Supportstorm | Fix | |
20:54, 1 Ianuarii 2010 | 836 × 840 (64 chiliocteti) | Supportstorm | Image Adjustments: Auto levels on contrast and color | ||
05:48, 11 Iunii 2006 | 836 × 840 (41 chiliocteti) | Konstable~commonswiki | |||
13:45, 11 Aprilis 2006 | 836 × 840 (48 chiliocteti) | Argo Navis | == Summary == Voyater 2 photo, 1989 August 25 '''Description from NASA''' Proteus is the second largest moon of Neptune behind the mysterious Triton. Proteus was discovered only in 1982 by the Voyager 2 spacecraft. This is unusual since Neptune has a sm |
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Orientatio | Normalis |
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Resolutio horizontalis | 300 dpi |
Resolutio verticalis | 300 dpi |
Software used | Adobe Photoshop 7.0 |
Dies et hora mutationis | 14:53, 1 Ianuarii 2010 |
Spatium colorimetricum | Uncalibrated |