We use cookies to deliver essential features and to measure their performance. Learn more.
Home
Search Objects
Major Solar System Objects
Comets
Asteroids
Spacecrafts
Star Maps
Orbits
public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:23 
Transit: 12:45 
Sunset: 18:07
sunny   (Daytime)  
What's Visible Now • Tonight Timeline
Search  close
All Constellations » Cassiopeia » 

Segin - ε Cassiopeiae (epsilon Cassiopeiae)

Above the horizon.  Circumpolar today
Alt: 31.15°   Az: 22.48°   Direction: North-North-East

Segin, also designated as ε Cassiopeiae (epsilon Cassiopeiae), is a variable giant star of spectral class B3 in the constellation of Cassiopeia.

Segin visual magnitude is 3.38. Because of its moderate brightness, Segin 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 Segin - ε Cassiopeiae (epsilon Cassiopeiae) star
DSS2 image of Segin. The red arrow shows the motion of Segin during the next 10000 years (5.33 arcmin in Right Ascension and -3.50 arcmin in declination);

Celestial Coordinates

Apparent

01h 56m 12s
+63° 47’ 27”
15h 11m 16s
17h 07m 29s

J2000

01h 54m 23s
+63° 40’ 12”

Galactic Coordinates

129.84°
1.65°

Finder Chart

Finder chart Segin - ε Cassiopeiae (epsilon Cassiopeiae) star
Simplified finder chart for Segin - ε Cassiopeiae (epsilon Cassiopeiae).

Magnitude, Color, Spectral Class

3.38
Giant

-2.28
B3III
12489K

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

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

Distance, Radial Speed, Proper Motion

Segin is distant 441.73 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

135.50
441.73
-8 km/s
0.032 arcsec/y
-0.021"/y

Alternative Designations

Segin
ε Cassiopeiae
(epsilon Cassiopeiae)
45 Cassiopeiae
SAO12031
SAO12031

Visibility from Your Location

Segin - ε Cassiopeiae (epsilon Cassiopeiae) is circumpolar and transits at 00:24 UTC (altitude: 77.7°)