Hypergiant Star HR 5171: Wide-field View | ESO
HR 5171, the brightest star just below the center of this wide-field image, is a yellow hypergiant, a very rare type of stars with only a dozen known in our galaxy. Its size is over 1,300 times that of the Sun—one of the ten largest stars found so far.
Observations with the European Southern Observatory’s Very Large Telescope Interferometer (VLTI) have shown that it is actually a double star, with the companion in contact with the main star.
Credit: European Southern Observatory (ESO)/Digitized Sky Survey 2
Release Date: March 12, 2014
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