S Scuti is a carbon star located in the constellation Scutum. Parallax measurements by Hipparcos put it at a distance of approximately 1,300 light-years (390 parsecs). Its apparent magnitude is 6.80, making it visible to the naked eye only under excellent conditions.
S Scuti is a semiregular variable star. Its class is SRb, and its pulsation cycle lasts 148 days. It has a radius of 386 R☉. S Scuti is also surrounded by a roughly spherical shell of dust. The shell was known earlier from its carbon monoxide emission lines. The total mass of the dust is (7 ± 2)×10−5 M☉.
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