High Quality Content by WIKIPEDIA articles! Aquila X-1 is the first extrasolar astronomical X-ray source detected within the constellation Aquila by the X-ray observatory satellite Uhuru. It is designated and given the catalog entry, 3U 1908+00. 3U stands for the 3rd Uhuru catalog, and the designation includes the source's equatorial coordinates, right ascension 19h 08m and declination +00° as calibrated for the Earth's orbital precession as of 1950.

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