ψ Andromedae (psi Andromedae)

ψ Andromedae is a multiple supergiant star in the constellation of Andromeda.

ψ Andromedae visual magnitude is 4.95. Because of its moderate brightness, ψ Andromedae should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ψ Andromedae:

Color of ψ Andromedae ⬤

Magnitude of ψ Andromedae 4.95

Class Supergiant

VISIBILITY RIGHT NOW ψ Andromedae (psi Andromedae) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 67°.

Celestial coordinates and finder chart of ψ Andromedae

ψ Andromedae is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ψ Andromedae are provided in the following table:

Right Ascension J2000 23h 46m 02s

Declination J2000 +46° 25’ 13”

Galactic Longitude 111.34°

Galactic Latitude -14.97°

Constellation Andromeda

The simplified sky map below shows the position of ψ Andromedae in the sky:

Finder chart ψ Andromedae (psi Andromedae) star

Simplified finder chart for ψ Andromedae (psi Andromedae).

Visibility of ψ Andromedae from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

ψ Andromedae (psi Andromedae) is circumpolar and transits at 11:11 UTC (altitude: 84.9°)

Digitized Sky Survey image of ψ Andromedae

The image below is a photograph of ψ Andromedae from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of ψ Andromedae is 0.011 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ψ Andromedae (psi Andromedae) star

DSS2 image of ψ Andromedae. The red arrow shows the motion of ψ Andromedae during the next 10000 years (1.83 arcmin in Right Ascension and -0.83 arcmin in declination);

Distance of ψ Andromedae from the Sun and relative movement

ψ Andromedae is distant 1,309.24 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

Distance (parsec) 401.61 pc

Distance (light year) 1,309.24 ly

Heliocentric radial velocity -25 km/s

Proper Motion RA 0.011 arcsec/year

Proper Motion Dec -0.005 arcsec/year

Spectral properties of ψ Andromedae

ψ Andromedae belongs to spectral class G5 and has a luminosity class of I corresponding to a supergiant star.

Absolute magnitude -3.07

Spectral Type G5I

Color Index (B-V) 1.11

Temperature of ψ Andromedae 4493K

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

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

ψ Andromedae star system properties

ψ Andromedae is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ψ Andromedae double sysyem:

Main star magnitude 4.95

Secondary star magnitude 8.95

Magnitude difference 4

Separation 184 arcsec

Alternative designations of ψ Andromedae

Bayer designation ψ Andromedae
(psi Andromedae)

Flamsteed designation 20 Andromedae

Henry Draper Catalogue HD223047

SAO Catalogue SAO53355

Hipparcos Catalogue HIP117221

Durchmusterung Catalogue BD+45 4321

FK5 Catalogue 1622

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Other stars in Andromeda