Its story

HIP 21689 has a visual magnitude of about 6.17: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 21689: right ascension 4h 39m 23s, declination +25° 13′ 6″ (J2000), in the region of the Taurus constellation (IAU figure Tau).

HIP 21689. It appears in classical and modern catalogs as HIP 21689, HD 29459, Gaia DR3 148144799407843200. In the SkyKeepsake Taurus (Tau) browse hub it sits with other stars of the same IAU figure.