Home
Search Objects
Major Solar System Objects
Comets
Asteroids
Spacecrafts
Star Maps
Orbits
public  Kalutara, Sri Lanka Kalutara, Sri Lanka  ⓘ
TimezoneAsia/Colombo
Sunrise: 5:54 
Transit: 12:08 
Sunset: 18:21
Search  close
All Constellations » Cepheus » 

δ Cephei (delta Cephei)

Below the horizon.  Rise: 23:08 | Tran: 5:53 | Set: 12:34
Alt: -5.43°   Az: 29.13°   Direction: North-North-East

δ Cephei is a variable and multiple supergiant star of spectral class F5 in the constellation of Cepheus.

δ Cephei visual magnitude is 3.75. Because of its moderate brightness, δ Cephei 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 Cephei (delta Cephei) star
DSS2 image of δ Cephei. The red arrow shows the motion of δ Cephei during the next 10000 years (2.50 arcmin in Right Ascension and 0.17 arcmin in declination);

Celestial Coordinates

Apparent

22h 30m 07s
+58° 32’ 45”
16h 32m 52s
15h 02m 59s

J2000

22h 29m 10s
+58° 24’ 55”

Galactic Coordinates

105.19°
0.53°

Finder Chart

loader
  Loading map...
Finder chart for δ Cephei (delta Cephei).

Magnitude, Color, Spectral Class

3.75
Supergiant

-3.64
F5I
5968K

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

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

Star System Properties

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

3.75
6.15
2.4
40.8 arcsec

Distance, Radial Speed, Proper Motion

δ Cephei is distant 981.93 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

301.20
981.93
-15 km/s
0.015 arcsec/y
0.001"/y

Alternative Designations

δ Cephei
(delta Cephei)
SAO34508
SAO34508

Visibility from Your Location

Today's δ Cephei (delta Cephei) rise, transit and set times from Kalutara, Sri Lanka are the following (all times relative to the local timezone Asia/Colombo):

Azimuth: 31.5°
Max altitude: 38.0°
Azimuth: 328.5°