Its story

HIP 81990 has a visual magnitude of about 6.79: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 81990: right ascension 16h 44m 60s, declination −0° 36′ 53″ (J2000), in the region of the Ophiuchus constellation (IAU figure Oph).

HIP 81990. It appears in classical and modern catalogs as HIP 81990, HD 151046, Gaia DR3 4382656685508134400. In the SkyKeepsake Ophiuchus (Oph) browse hub it sits with other stars of the same IAU figure.