Algedi - α2 Capricorni (alpha2 Capricorni)

Below the horizon. Rise: 15:02 | Tran: 19:56 | Set: 0:49

Alt: -45.34° Az: 321.10° Direction: North-West

Algedi, also designated as α2 Capricorni (alpha2 Capricorni), is a multiple giant star of spectral class G8 in the constellation of Capricornus.

Algedi visual magnitude is 3.57. Because of its moderate brightness, Algedi 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 Algedi - α2 Capricorni (alpha2 Capricorni) star

DSS2 image of Algedi. The red arrow shows the motion of Algedi during the next 10000 years (10.67 arcmin in Right Ascension and 0.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 19m 25s

Declination -12° 27’ 58”

Hour Angle 10h 12m 29s

Sideral Time 06h 31m 55s

J2000

Right Ascension 20h 18m 03s

Declination -12° 32’ 40”

Galactic Coordinates

Galactic Longitude 31.1°

Galactic Latitude -24.81°

Finder Chart

Simplified finder chart for Algedi - α2 Capricorni (alpha2 Capricorni).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.57

Class Giant

Absolute magnitude 0.96

Spectral Type G8III

Color Index (B-V) 0.94

Temperature 4892K

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

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

Star System Properties

Algedi is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the Algedi double sysyem:

Main star magnitude 3.57

Secondary star magnitude 3.97

Magnitude difference 0.4

Separation 377.7 arcsec

Distance, Radial Speed, Proper Motion

Algedi is distant 108.63 light years from the Sun

Distance (parsec) 33.32

Distance (light year) 108.63

Proper Motion RA 0.064 arcsec/y

Proper Motion Dec 0.004"/y

Alternative Designations

Proper Name Algedi

Bayer designation α2 Capricorni
(alpha2 Capricorni)

Flamsteed designation 6 Capricorni

Henry Draper Catalogue HD192947

SAO Catalogue SAO163427

Hipparcos Catalogue HIP100064

Durchmusterung Catalogue BD-12 5685

FK5 Catalogue 761

Aitken Double Star Catalogue ADS13645

Visibility from Your Location

Today's Algedi - α2 Capricorni (alpha2 Capricorni) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.5° RISE 15:02

Max altitude: 26.1° TRANSIT 19:56

Azimuth: 257.5° SET 0:49

Set Location

Other stars in Capricornus