Its story
21Eta Cyg has a visual magnitude of about 3.62: under a reasonably dark sky it is typically reachable with the unaided eye.
Equatorial coordinates for 21Eta Cyg: right ascension 19h 56m 18s, declination +35° 4′ 60″ (J2000), in the region of the Cygnus constellation (IAU figure Cyg).
21Eta Cyg. It appears in classical and modern catalogs as HIP 98110, HD 188947, Gaia DR3 2059372363884259072. In the SkyKeepsake Cygnus (Cyg) browse hub it sits with other stars of the same IAU figure.
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Compose this starFactsHIP 98110
- Right ascension
- 19h 56m 18s
- Declination
- +35° 04′ 60″
- Magnitude
- 3.62
- Distance
- ≈ 139 ly
Data: gaia-dr3