18 Boötis
18 Boötis is a double sub-giant star in the constellation of Boötes.
18 Boötis visual magnitude is 5.41. Because of its reltive faintness, 18 Boötis should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.
The proper motion of 18 Boötis is 0.106 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Key facts about 18 Boötis
18 Boötis is above the horizon from Greenwich, United Kingdom.
Altitude: 26.2°
Azimuth: 257.6°
Direction: West-South-West
Celestial coordinates and finder chart of 18 Boötis
18 Boötis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 18 Boötis are provided in the following table:
The simplified sky map below shows the position of 18 Boötis in the sky:
Visibility of 18 Boötis from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's 18 Boötis rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Distance of 18 Boötis from the Sun and relative movement
18 Boötis is distant 85.05 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.
Spectral properties of 18 Boötis
18 Boötis belongs to spectral class F5 and has a luminosity class of IV corresponding to a sub-giant star.
The red dot in the diagram below shows where 18 Boötis is situated in the Hertzsprung–Russell diagram.
18 Boötis star system properties
18 Boötis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 18 Boötis double sysyem: