Sagittarius X-1
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High Quality Content by WIKIPEDIA articles! The X-ray observatory satellite Uhuru detected an X-ray source at 2U 1744-26, right ascension (RA) is 17h 44m and declination (Dec) is -26°, after December 12, 1970, and before May 4, 1972, that had been designated Sgr X-1. The second Uhuru catalog of X-ray sources is indicated by "2U". It was subsequently observed before August 27, 1973, at 3U 1744-26, and before January 12, 1974, at 4U 1744-26. Although designated as the first X-ray source to be detected and confirmed in the constellation Sagittarius, it was not. Sagittarius XR-1 was detected earlier on June 16, 1964.…mehr

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High Quality Content by WIKIPEDIA articles! The X-ray observatory satellite Uhuru detected an X-ray source at 2U 1744-26, right ascension (RA) is 17h 44m and declination (Dec) is -26°, after December 12, 1970, and before May 4, 1972, that had been designated Sgr X-1. The second Uhuru catalog of X-ray sources is indicated by "2U". It was subsequently observed before August 27, 1973, at 3U 1744-26, and before January 12, 1974, at 4U 1744-26. Although designated as the first X-ray source to be detected and confirmed in the constellation Sagittarius, it was not. Sagittarius XR-1 was detected earlier on June 16, 1964.