How to see it
4 Per has a visual magnitude of about 4.96: under a reasonably dark sky it is typically reachable with the unaided eye.
Sky position
Equatorial coordinates for 4 Per: right ascension 2h 2m 18s, declination +54° 29′ 15″ (J2000), in the region of the Cassiopeia constellation (IAU figure Cas).
Catalog context
4 Per. It appears in classical and modern catalogs as HIP 9505, HD 12303, Gaia DR3 456370069393151360. In the SkyKeepsake Cassiopeia (Cas) browse hub it sits with other stars of the same IAU figure.
Catalog identifiers
- Gaia
- Gaia DR3 456370069393151360
- HIP
- 9505
- HD
- 12303
- gaia_dr3
- 456370069393151360
- Bayer / Flamsteed
- 4 Per
Also known as
- Gaia DR3 TOP 5M 456370069393151360
- HD 12303
- HIP 9505
Observed properties
- Visual magnitude
- 4.96