Its story

HIP 21103 has a visual magnitude of about 8.33: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 21103: right ascension 4h 31m 16s, declination +25° 1′ 49″ (J2000), in the region of the Taurus constellation (IAU figure Tau).

HIP 21103. It appears in classical and modern catalogs as HIP 21103, HD 28580, Gaia DR3 150907081855211520. In the SkyKeepsake Taurus (Tau) browse hub it sits with other stars of the same IAU figure.