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

20 Draconis

20 Draconis is a variable and double main-sequence star in the constellation of Draco.

20 Draconis visual magnitude is 6.41. Because of its reltive faintness, 20 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 20 Draconis:

6.41
Main-sequence
20 Draconis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 27°.

Celestial coordinates and finder chart of 20 Draconis

20 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 20 Draconis are provided in the following table:

16h 56m 25s
+65° 02’ 21”
95.55°
36.45°
Draco

The simplified sky map below shows the position of 20 Draconis in the sky:

Finder chart 20 Draconis star
Simplified finder chart for 20 Draconis.

Visibility of 20 Draconis from your location

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

20 Draconis is circumpolar and transits at 07:47 UTC (altitude: 76.4°)

Digitized Sky Survey image of 20 Draconis

The image below is a photograph of 20 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 20 Draconis is -0.041 arcsec per year in Right Ascension and 0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 20 Draconis star
DSS2 image of 20 Draconis. The red arrow shows the motion of 20 Draconis during the next 10000 years (-6.83 arcmin in Right Ascension and 5.33 arcmin in declination);

Distance of 20 Draconis from the Sun and relative movement

20 Draconis is distant 218.79 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

67.11 pc
218.79 ly
-21 km/s
-0.041 arcsec/year
0.032 arcsec/year

Spectral properties of 20 Draconis

20 Draconis belongs to spectral class F1 and has a luminosity class of V corresponding to a main-sequence star.

2.28
F1V
6989K

The red dot in the diagram below shows where 20 Draconis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 20 Draconis. Attribution: Richard Powell / CC BY-SA

20 Draconis star system properties

20 Draconis is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 20 Draconis double sysyem:

6.41
6.61
0.2
1 arcsec

Alternative designations of 20 Draconis

20 Draconis
SAO17285
SAO17285