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public LocationGreenwich, United Kingdom
TimezoneEurope/London
Sunrise: 5:09 
Transit: 12:54 
Sunset: 20:41
sunny   (Daytime)   What's Visible Now?

β Trianguli (beta Trianguli)

Altitude: 17.0°   Azimuth: 305.4°   Direction: North-West

β Trianguli is a giant star in the constellation of Triangulum.

β Trianguli visual magnitude is 3. Thanks to its high brightness, β Trianguli is clearly visible when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

The proper motion of β Trianguli is 0.15 arcsec per year in Right Ascension and -0.04 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of β Trianguli (beta Trianguli) star
DSS2 image of β Trianguli. The red arrow shows the motion of β Trianguli during the next 1000 years (2.50 arcmin in Right Ascension and -0.67 arcmin in declination);

Key facts about β Trianguli

3
Giant

β Trianguli (beta Trianguli) is above the horizon from Greenwich, United Kingdom.

Altitude: 17.0°
Azimuth: 305.4°
Direction: North-West

Celestial coordinates and finder chart of β Trianguli

β 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 β Trianguli are provided in the following table:

02h 09m 32s
+34° 59’ 13”
140.55°
-25.2°
Triangulum

The simplified sky map below shows the position of β Trianguli in the sky:

Finder chart β Trianguli (beta Trianguli) star
Simplified finder chart for β Trianguli (beta Trianguli).

Visibility of β Trianguli from your location

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

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

Azimuth: 55.0°
Max altitude: 73.5°
Azimuth: 305.0°

Distance of β Trianguli from the Sun and relative movement

β Trianguli is distant 124.24 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

38.11 pc
124.24 ly
10 km/s
0.15 arcsec/year
-0.04 arcsec/year

Spectral properties of β Trianguli

β Trianguli belongs to spectral class A5 and has a luminosity class of III corresponding to a giant star.

0.09
A5III
8658K

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

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

Alternative designations of β Trianguli

β Trianguli
(beta Trianguli)
4 Trianguli
SAO55306
SAO55306