Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

27 Draconis

27 Draconis is a double hypergiant star in the constellation of Draco.

27 Draconis visual magnitude is 5.05. Because of its reltive faintness, 27 Draconis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 27 Draconis:

5.05
Hypergiant
27 Draconis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 32°.

Celestial coordinates and finder chart of 27 Draconis

27 Draconis is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 27 Draconis are provided in the following table:

17h 31m 57s
+68° 08’ 06”
98.42°
32.4°
Draco

The simplified sky map below shows the position of 27 Draconis in the sky:

Finder chart 27 Draconis star
Simplified finder chart for 27 Draconis.

Visibility of 27 Draconis from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

27 Draconis is circumpolar and transits at 08:23 UTC (altitude: 73.3°)

Digitized Sky Survey image of 27 Draconis

The image below is a photograph of 27 Draconis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 27 Draconis is -0.012 arcsec per year in Right Ascension and 0.134 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 27 Draconis star
DSS2 image of 27 Draconis. The red arrow shows the motion of 27 Draconis during the next 1000 years (-0.20 arcmin in Right Ascension and 2.23 arcmin in declination);

Distance of 27 Draconis from the Sun and relative movement

27 Draconis is distant 217.04 light years from the Sun and it is moving towards the Sun at the speed of 73 kilometers per second.

66.58 pc
217.04 ly
-73 km/s
-0.012 arcsec/year
0.134 arcsec/year

Spectral properties of 27 Draconis

27 Draconis belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

0.93
K0III
4559K

The red dot in the diagram below shows where 27 Draconis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 27 Draconis. Attribution: Richard Powell / CC BY-SA

27 Draconis star system properties

27 Draconis 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 27 Draconis double sysyem:

5.05
11.25
6.2
163.4 arcsec

Alternative designations of 27 Draconis

27 Draconis
SAO17526
SAO17526