Its story

HIP 21091 has a visual magnitude of about 8.57: it is a telescope star and remains difficult or invisible to the naked eye even in good conditions.

Equatorial coordinates for HIP 21091: right ascension 4h 31m 11s, declination +11° 14′ 40″ (J2000), in the region of the Taurus constellation (IAU figure Tau).

HIP 21091. It appears in classical and modern catalogs as HIP 21091, Gaia DR3 3306104544145237504. In the SkyKeepsake Taurus (Tau) browse hub it sits with other stars of the same IAU figure.