φ Andromedae (phi Andromedae)

Above the horizon. Circumpolar today

Alt: 21.00° Az: 38.44° Direction: North-East

φ Andromedae is a variable and double main-sequence star of spectral class B7 in the constellation of Andromeda.

φ Andromedae visual magnitude is 4.25. Because of its moderate brightness, φ Andromedae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of φ Andromedae (phi Andromedae) star

DSS2 image of φ Andromedae. The red arrow shows the motion of φ Andromedae during the next 10000 years (1.67 arcmin in Right Ascension and -1.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 01h 10m 59s

Declination +47° 22’ 38”

Hour Angle 15h 55m 57s

Sidereal Time 17h 06m 57s

J2000

Right Ascension 01h 09m 30s

Declination +47° 14’ 30”

Galactic Coordinates

Galactic Longitude 126.11°

Galactic Latitude -15.52°

Finder Chart

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Finder chart for φ Andromedae (phi Andromedae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.25

Class Main-sequence

Absolute magnitude -2.52

Spectral Type B7V

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where φ Andromedae is situated in the Hertzsprung–Russell diagram.

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

Star System Properties

φ Andromedae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the φ Andromedae double sysyem:

Main star magnitude 4.25

Secondary star magnitude 5.45

Magnitude difference 1.2

Separation 0.4 arcsec

Distance, Radial Speed, Proper Motion

φ Andromedae is distant 735.89 light years from the Sun

Distance (parsec) 225.73

Distance (light year) 735.89

Proper Motion RA 0.01 arcsec/y

Proper Motion Dec -0.009"/y

Alternative Designations

Bayer designation φ Andromedae
(phi Andromedae)

Flamsteed designation 42 Andromedae

Henry Draper Catalogue HD6811

SAO Catalogue SAO36972

Hipparcos Catalogue HIP5434

Durchmusterung Catalogue BD+46 275

General Catalogue of Variable Stars Var?

Aitken Double Star Catalogue ADS940

Visibility from Your Location

φ Andromedae (phi Andromedae) is circumpolar and transits at 05:37 UTC (altitude: 85.9°)

In Evidence

Other stars in Andromeda

φ Andromedae (phi Andromedae)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Star System Properties

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Andromeda

φ Andromedae (phi Andromedae)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Star System Properties

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location