Its story

HIP 21551 has a visual magnitude of about 9.75: it is a telescope star and remains difficult or invisible to the naked eye even in good conditions.

Equatorial coordinates for HIP 21551: right ascension 4h 37m 39s, declination +23° 46′ 56″ (J2000), in the region of the Taurus constellation (IAU figure Tau).

HIP 21551. It appears in classical and modern catalogs as HIP 21551, HD 284572, Gaia DR3 146780236758907264. In the SkyKeepsake Taurus (Tau) browse hub it sits with other stars of the same IAU figure.