Its story

HIP 104021 has a visual magnitude of about 9.99: it is a telescope star and remains difficult or invisible to the naked eye even in good conditions.

Equatorial coordinates for HIP 104021: right ascension 21h 4m 28s, declination +59° 4′ 21″ (J2000), in the region of the Cepheus constellation (IAU figure Cep).

HIP 104021. It appears in classical and modern catalogs as HIP 104021, HD 239566, Gaia DR3 2190686453456707072. In the SkyKeepsake Cepheus (Cep) browse hub it sits with other stars of the same IAU figure.