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public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Triangulum » 

12 Trianguli

Below the horizon.  Rise: 0:12 | Tran: 9:16 | Set: 18:16
Altitude: -1.6°   Azimuth: 33.9°   Direction: North-East

12 Trianguli is a hypergiant star of spectral class F0 in the constellation of Triangulum.

12 Trianguli visual magnitude is 5.29. Because of its faintness, 12 Trianguli 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.

Celestial coordinates and finder chart of 12 Trianguli

Finder chart 12 Trianguli star
Simplified finder chart for 12 Trianguli.

12 Trianguli 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 12 Trianguli are provided in the following table:

02h 28m 09s
+29° 40’ 09”
Image of 12 Trianguli star
DSS2 image of 12 Trianguli. The red arrow shows the motion of 12 Trianguli during the next 10000 years (-2.50 arcmin in Right Ascension and -14.50 arcmin in declination);

Key facts about 12 Trianguli


and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where 12 Trianguli is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 12 Trianguli. Attribution: Richard Powell / CC BY-SA

Distance of 12 Trianguli from the Sun and relative movement

12 Trianguli is distant 155.16 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

47.60 pc
155.16 ly
-25 km/s
-0.015 arcsec/year
-0.087 arcsec/year

Alternative designations of 12 Trianguli

12 Trianguli

Visibility of 12 Trianguli from your location

Today's 12 Trianguli rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.3°
Max altitude: 68.2°
Azimuth: 299.7°