How to see it

40 Per has a visual magnitude of about 4.92: under a reasonably dark sky it is typically reachable with the unaided eye.

Sky position

Equatorial coordinates for 40 Per: right ascension 3h 42m 23s, declination +33° 57′ 54″ (J2000), on the celestial sphere.

Catalog context

40 Per. It appears in classical and modern catalogs as HIP 17313, HD 22951, Gaia DR3 218170461600456576.

Catalog identifiers

Gaia

Gaia DR3 218170461600456576

HIP

17313

HD

22951

gaia_dr3

218170461600456576

Bayer / Flamsteed

40 Per

Also known as

• Gaia DR3 TOP 5M 218170461600456576
• HD 22951
• HIP 17313

Observed properties

Visual magnitude

4.92