Its story

HIP 21009 has a visual magnitude of about 6.57: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 21009: right ascension 4h 30m 18s, declination −38° 16′ 29″ (J2000), in the region of the Caelum constellation (IAU figure Cae).

HIP 21009. It appears in classical and modern catalogs as HIP 21009, HD 28755, Gaia DR3 4865591363843658880. In the SkyKeepsake Caelum (Cae) browse hub it sits with other stars of the same IAU figure.