Its story

HIP 21720 has a visual magnitude of about 8.89: it is a telescope star and remains difficult or invisible to the naked eye even in good conditions.

Equatorial coordinates for HIP 21720: right ascension 4h 39m 47s, declination +66° 52′ 5″ (J2000), in the region of the Camelopardalis constellation (IAU figure Cam).

HIP 21720. It appears in classical and modern catalogs as HIP 21720, HD 29102, Gaia DR3 483410908610006016. In the SkyKeepsake Camelopardalis (Cam) browse hub it sits with other stars of the same IAU figure.