57 Persei

Above the horizon. Circumpolar today

Alt: 7.17° Az: 18.56° Direction: North-North-East

57 Persei is a multiple hypergiant star of spectral class F0 in the constellation of Perseus.

57 Persei visual magnitude is 6.09. Because of its faintness, 57 Persei is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 57 Persei. The red arrow shows the motion of 57 Persei during the next 100000 years (6.67 arcmin in Right Ascension and 6.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 04h 35m 12s

Declination +43° 06’ 55”

Hour Angle 13h 42m 32s

Sidereal Time 18h 17m 44s

J2000

Right Ascension 04h 33m 24s

Declination +43° 03’ 50”

Galactic Coordinates

Galactic Longitude 160.02°

Galactic Latitude -3.27°

Finder Chart

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Finder chart for 57 Persei.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.09

Class Hypergiant

Absolute magnitude 2.04

Spectral Type F0V

Color Index (B-V) 0.38

Temperature 6989K

The red dot in the diagram below shows where 57 Persei is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 57 Persei. Attribution: Richard Powell / CC BY-SA

Star System Properties

57 Persei is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 57 Persei double sysyem:

Main star magnitude 6.09

Secondary star magnitude 6.79

Magnitude difference 0.7

Separation 116.2 arcsec

Distance, Radial Speed, Proper Motion

57 Persei is distant 210.59 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

Distance (parsec) 64.60

Distance (light year) 210.59

Radial Speed -23 km/s

Proper Motion RA 0.004 arcsec/y

Proper Motion Dec 0.004"/y

Alternative Designations

Flamsteed designation 57 Persei

Henry Draper Catalogue HD28704

SAO Catalogue SAO39604

Hipparcos Catalogue HIP21242

Durchmusterung Catalogue BD+42 990

FK5 Catalogue 1124

Visibility from Your Location

57 Persei is circumpolar and transits at 12:21 UTC (altitude: 81.6°)

Set Location

Other stars in Perseus