Its story

HIP 100398 has a visual magnitude of about 6.83: it usually needs binoculars or a small telescope, especially from light-polluted sites.

Equatorial coordinates for HIP 100398: right ascension 20h 21m 36s, declination +10° 59′ 30″ (J2000), in the region of the Delphinus constellation (IAU figure Del).

HIP 100398. It appears in classical and modern catalogs as HIP 100398, HD 193738, Gaia DR3 1753973659102620416. In the SkyKeepsake Delphinus (Del) browse hub it sits with other stars of the same IAU figure.