Its story

HIP 21638 has a visual magnitude of about 8.46: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 21638: right ascension 4h 38m 52s, declination +39° 9′ 10″ (J2000), in the region of the Auriga constellation (IAU figure Aur).

HIP 21638. It appears in classical and modern catalogs as HIP 21638, HD 276662, Gaia DR3 178718197688385920. In the SkyKeepsake Auriga (Aur) browse hub it sits with other stars of the same IAU figure.