Its story

HIP 81666 has a visual magnitude of about 7.27: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 81666: right ascension 16h 40m 57s, declination +42° 27′ 42″ (J2000), in the region of the Hercules constellation (IAU figure Her).

HIP 81666. It appears in classical and modern catalogs as HIP 81666, HD 150709, Gaia DR3 1357348929851912960. In the SkyKeepsake Hercules (Her) browse hub it sits with other stars of the same IAU figure.