Your Guide to the Solar System and the Night Sky
This site is free and ad-free thanks to the support of our users. If you can, please consider a donation.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:46  
clear_day Transit: 12:51  
SunsetSet: 18:55 south
wb_twilight Civil TwilightWhat's Visible Now
All Constellations » Piscis Austrinus » 

Fomalhaut - α Piscis Austrini (alpha Piscis Austrini)

Altitude: -29.3°   Azimuth: 258.1°   Direction: West-South-West

Fomalhaut, also designated as α Piscis Austrini (alpha Piscis Austrini), is a variable main-sequence star in the constellation of Piscis Austrinus.

Fomalhaut visual magnitude is 1.16, making it the 17th brightest star in the sky. Thanks to its high brightness, Fomalhaut is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.

The table below summarizes the key facts about Fomalhaut:


Fomalhaut - α Piscis Austrini (alpha Piscis Austrini) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -29.3°
Azimuth: 258.1°
Direction: West-South-West

Celestial coordinates and finder chart of Fomalhaut

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

22h 57m 39s
-29° 37’ 19”
Piscis Austrinus

The simplified sky map below shows the position of Fomalhaut in the sky:

Finder chart Fomalhaut - α Piscis Austrini (alpha Piscis Austrini) star
Simplified finder chart for Fomalhaut - α Piscis Austrini (alpha Piscis Austrini).

Visibility of Fomalhaut from your location

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

Today's Fomalhaut - α Piscis Austrini (alpha Piscis Austrini) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 119.6°
Max altitude: 8.9°
Azimuth: 240.4°

Digitized Sky Survey image of Fomalhaut

The image below is a photograph of Fomalhaut 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 Fomalhaut is 0.333 arcsec per year in Right Ascension and -0.165 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Fomalhaut - α Piscis Austrini (alpha Piscis Austrini) star
DSS2 image of Fomalhaut. The red arrow shows the motion of Fomalhaut during the next 1000 years (5.55 arcmin in Right Ascension and -2.75 arcmin in declination);

Distance of Fomalhaut from the Sun and relative movement

Fomalhaut is distant 25.06 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

7.69 pc
25.06 ly
7 km/s
0.333 arcsec/year
-0.165 arcsec/year

Spectral properties of Fomalhaut

Fomalhaut belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of Fomalhaut

α Piscis Austrini
(alpha Piscis Austrini)
24 Piscis Austrini