Alsafi - σ Draconis (sigma Draconis)

Above the horizon. Circumpolar today

Alt: 33.15° Az: 11.94° Direction: North-North-East

Alsafi, also designated as σ Draconis (sigma Draconis), is a variable hypergiant star of spectral class K0 in the constellation of Draco.

Alsafi visual magnitude is 4.68. Because of its moderate brightness, Alsafi 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 Alsafi - σ Draconis (sigma Draconis) star

DSS2 image of Alsafi. The red arrow shows the motion of Alsafi during the next 100 years (1.00 arcmin in Right Ascension and -2.90 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 32m 15s

Declination +69° 42’ 59”

Hour Angle 13h 59m 51s

Sidereal Time 09h 32m 07s

J2000

Right Ascension 19h 32m 21s

Declination +69° 39’ 39”

Galactic Coordinates

Galactic Longitude 101.32°

Galactic Latitude 21.89°

Finder Chart

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Finder chart for Alsafi - σ Draconis (sigma Draconis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.68

Class Hypergiant

Absolute magnitude 5.88

Spectral Type K0V

Color Index (B-V) 0.79

Temperature 5311K

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

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

Distance, Radial Speed, Proper Motion

Alsafi is distant 18.80 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

Distance (parsec) 5.77

Distance (light year) 18.80

Radial Speed 27 km/s

Proper Motion RA 0.6 arcsec/y

Proper Motion Dec -1.738"/y

Alternative Designations

Proper Name Alsafi

Bayer designation σ Draconis
(sigma Draconis)

Flamsteed designation 61 Draconis

Henry Draper Catalogue HD185144

SAO Catalogue SAO18396

Hipparcos Catalogue HIP96100

Durchmusterung Catalogue BD+69 1053

Gliese Catalogue Gl 764

General Catalogue of Variable Stars 12176

Visibility from Your Location

Alsafi - σ Draconis (sigma Draconis) is circumpolar and transits at 03:51 UTC (altitude: 71.8°)

In Evidence

Other stars in Draco

Alsafi - σ Draconis (sigma Draconis)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Draco

Alsafi - σ Draconis (sigma Draconis)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location