Its story

21The Crt has a visual magnitude of about 4.66: under a reasonably dark sky it is typically reachable with the unaided eye.

Equatorial coordinates for 21The Crt: right ascension 11h 36m 41s, declination −9° 48′ 8″ (J2000), in the region of the Crater constellation (IAU figure Crt).

21The Crt. It appears in classical and modern catalogs as HIP 56633, HD 100889, Gaia DR3 3587107658569000960. In the SkyKeepsake Crater (Crt) browse hub it sits with other stars of the same IAU figure.