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public LocationGreenwich, United Kingdom
TimezoneEurope/London
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:17
sunny   (Daytime)   What's Visible Now?

δ Trianguli (delta Trianguli)

Above the horizon.  Rise: 23:33 | Tran: 9:28 | Set: 19:20
Altitude: 47.4°   Azimuth: 268.2°   Direction: West

δ Trianguli is a double hypergiant star of spectral class G0 in the constellation of Triangulum.

δ Trianguli visual magnitude is 4.87. Because of its moderate brightness, δ Trianguli 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.

Celestial coordinates and finder chart of δ Trianguli

Finder chart δ Trianguli (delta Trianguli) star
Simplified finder chart for δ Trianguli (delta Trianguli).

δ 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 δ Trianguli are provided in the following table:

02h 17m 03s
+34° 13’ 27”
142.43°
-25.39°
Triangulum
Image of δ Trianguli (delta Trianguli) star
DSS2 image of δ Trianguli. The red arrow shows the motion of δ Trianguli during the next 100 years (1.92 arcmin in Right Ascension and -0.41 arcmin in declination);

Key facts about δ Trianguli

4.87
Hypergiant

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

4.69
G0V
5929K

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

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

δ Trianguli star system properties

δ Trianguli 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 δ Trianguli double sysyem:

4.87
13.37
8.5
65.4 arcsec

Distance of δ Trianguli from the Sun and relative movement

δ Trianguli is distant 35.36 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

10.85 pc
35.36 ly
-6 km/s
1.154 arcsec/year
-0.245 arcsec/year

Alternative designations of δ Trianguli

δ Trianguli
(delta Trianguli)
8 Trianguli
SAO55420
SAO55420

Visibility of δ Trianguli from your location

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

Azimuth: 55.8°
Max altitude: 72.7°
Azimuth: 304.2°