Its story

HIP 21790 has a visual magnitude of about 7.23: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 21790: right ascension 4h 40m 50s, declination +57° 52′ 46″ (J2000), in the region of the Camelopardalis constellation (IAU figure Cam).

HIP 21790. It appears in classical and modern catalogs as HIP 21790, HD 29371, Gaia DR3 278676483398049152. In the SkyKeepsake Camelopardalis (Cam) browse hub it sits with other stars of the same IAU figure.