Rastaban - β Draconis (beta Draconis)
Rastaban, also designated as β Draconis (beta Draconis), is a multiple supergiant star in the constellation of Draco.
Rastaban visual magnitude is 2.79. Thanks to its high brightness, Rastaban is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Rastaban:
Celestial coordinates and finder chart of Rastaban
Rastaban is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Rastaban are provided in the following table:
The simplified sky map below shows the position of Rastaban in the sky:
Visibility of Rastaban from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Rastaban - β Draconis (beta Draconis) is circumpolar and transits at 05:24 UTC (altitude: 89.2°)
Digitized Sky Survey image of Rastaban
The image below is a photograph of Rastaban 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 Rastaban is -0.016 arcsec per year in Right Ascension and 0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Rastaban from the Sun and relative movement
Rastaban is distant 361.42 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.
Spectral properties of Rastaban
Rastaban belongs to spectral class G2 and has a luminosity class of I corresponding to a supergiant star.
The red dot in the diagram below shows where Rastaban is situated in the Hertzsprung–Russell diagram.
Rastaban star system properties
Rastaban 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 Rastaban double sysyem: