δ Trianguli (delta Trianguli)

Above the horizon. Rise: 23:18 | Tran: 9:15 | Set: 19:08

Alt: 46.63° Az: 90.62° Direction: South

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.

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);

Celestial Coordinates

Apparent

Right Ascension 02h 18m 34s

Declination +34° 20’ 27”

Hour Angle 20h 14m 55s

Sidereal Time 22h 33m 30s

J2000

Right Ascension 02h 17m 03s

Declination +34° 13’ 27”

Galactic Coordinates

Galactic Longitude 142.43°

Galactic Latitude -25.39°

Finder Chart

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Finder chart for δ Trianguli (delta Trianguli).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.87

Class Hypergiant

Absolute magnitude 4.69

Spectral Type G0V

Color Index (B-V) 0.61

Temperature 5929K

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

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

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:

Main star magnitude 4.87

Secondary star magnitude 13.37

Magnitude difference 8.5

Separation 65.4 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 10.85

Distance (light year) 35.36

Radial Speed -6 km/s

Proper Motion RA 1.154 arcsec/y

Proper Motion Dec -0.245"/y

Alternative Designations

Bayer designation δ Trianguli
(delta Trianguli)

Flamsteed designation 8 Trianguli

Henry Draper Catalogue HD13974

SAO Catalogue SAO55420

Hipparcos Catalogue HIP10644

Durchmusterung Catalogue BD+33 395

Gliese Catalogue Gl 92

Aitken Double Star Catalogue ADS1739

Visibility from Your Location

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

Azimuth: 55.7° RISE 23:18

Max altitude: 72.9° TRANSIT 9:15

Azimuth: 304.3° SET 19:08

Set Location

Other stars in Triangulum