Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]

23 Andromedae

23 Andromedae is a hypergiant star in the constellation of Andromeda.

23 Andromedae visual magnitude is 5.72. Because of its reltive faintness, 23 Andromedae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 23 Andromedae:

5.72
Hypergiant
23 Andromedae is above the horizon from Greenwich, United Kingdom [change]. Altitude: 3°.

Celestial coordinates and finder chart of 23 Andromedae

23 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 23 Andromedae are provided in the following table:

00h 13m 30s
+41° 02’ 07”
115.27°
-21.27°
Andromeda

The simplified sky map below shows the position of 23 Andromedae in the sky:

Finder chart 23 Andromedae star
Simplified finder chart for 23 Andromedae.

Visibility of 23 Andromedae from your location

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

23 Andromedae is circumpolar and transits at 05:32 UTC (altitude: 79.6°)

Digitized Sky Survey image of 23 Andromedae

The image below is a photograph of 23 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 23 Andromedae is -0.123 arcsec per year in Right Ascension and -0.148 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 23 Andromedae star
DSS2 image of 23 Andromedae. The red arrow shows the motion of 23 Andromedae during the next 1000 years (-2.05 arcmin in Right Ascension and -2.47 arcmin in declination);

Distance of 23 Andromedae from the Sun and relative movement

23 Andromedae is distant 114.11 light years from the Sun and it is moving towards the Sun at the speed of 29 kilometers per second.

35.00 pc
114.11 ly
-29 km/s
-0.123 arcsec/year
-0.148 arcsec/year

Spectral properties of 23 Andromedae

23 Andromedae belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.

3.00
F0IV
7399K

The red dot in the diagram below shows where 23 Andromedae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 23 Andromedae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 23 Andromedae

23 Andromedae
SAO36173
SAO36173