Abstract
THE X-ray source Cen X-3 (3U1118-60) is part of a pulsating, eclipsing, binary system1,2. The third Uhuru catalogue3 gives a best position for the source of α (1950) = 11 h 18 min 55 s, δ (1950) = −60° 19′ 5″ with a 90% confidence error box of area 7 × 10−4 deg2. At present this X-ray source has not been positively identified with an optical counterpart although several candidates have been suggested— (refs 4–6 and L. Webster, unpublished).
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References
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PARKINSON, J., MASON, K. & SANFORD, P. New position of Cen X-3 from Copernicus. Nature 249, 746–747 (1974). https://doi.org/10.1038/249746a0
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DOI: https://doi.org/10.1038/249746a0
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