Its story

HIP 105639 has a visual magnitude of about 8.72: it is a telescope star and remains difficult or invisible to the naked eye even in good conditions.

Equatorial coordinates for HIP 105639: right ascension 21h 23m 49s, declination +1° 36′ 58″ (J2000), in the region of the Equuleus constellation (IAU figure Equ).

HIP 105639. It appears in classical and modern catalogs as HIP 105639, Gaia DR3 2691360205711417856. In the SkyKeepsake Equuleus (Equ) browse hub it sits with other stars of the same IAU figure.