Its story

HIP 21557 has a visual magnitude of about 6.90: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 21557: right ascension 4h 37m 43s, declination −2° 38′ 48″ (J2000), in the region of the Orion constellation (IAU figure Ori).

HIP 21557. It appears in classical and modern catalogs as HIP 21557, HD 29405, Gaia DR3 3205039325106611840. In the SkyKeepsake Orion (Ori) browse hub it sits with other stars of the same IAU figure.