How to see it
21 Her has a visual magnitude of about 5.83: under a reasonably dark sky it is typically reachable with the unaided eye.
Sky position
Equatorial coordinates for 21 Her: right ascension 16h 24m 11s, declination +6° 56′ 54″ (J2000), on the celestial sphere.
Catalog context
21 Her. It appears in classical and modern catalogs as HIP 80351, HD 147869, Gaia DR3 4439556480967874432.
Catalog identifiers
- Gaia
- Gaia DR3 4439556480967874432
- HIP
- 80351
- HD
- 147869
- gaia_dr3
- 4439556480967874432
- Bayer / Flamsteed
- 21 Her
Observed properties
- Visual magnitude
- 5.83