θ Lyrae (theta Lyrae)
θ Lyrae is a variable and multiple hypergiant star in the constellation of Lyra.
θ Lyrae visual magnitude is 4.36. Because of its moderate brightness, θ Lyrae should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.
The proper motion of θ Lyrae is -0.001 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Key facts about θ Lyrae
θ Lyrae (theta Lyrae) is above the horizon from Greenwich, United Kingdom.
Altitude: 14.9°
Azimuth: 313.8°
Direction: North-West
Celestial coordinates and finder chart of θ Lyrae
θ Lyrae 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 θ Lyrae are provided in the following table:
The simplified sky map below shows the position of θ Lyrae in the sky:
Visibility of θ Lyrae from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's θ Lyrae (theta Lyrae) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Distance of θ Lyrae from the Sun and relative movement
θ Lyrae is distant 768.87 light years from the Sun and it is moving towards the Sun at the speed of 31 kilometers per second.
Spectral properties of θ Lyrae
θ Lyrae belongs to spectral class K0 and has a luminosity class of II corresponding to a hypergiant star.
The red dot in the diagram below shows where θ Lyrae is situated in the Hertzsprung–Russell diagram.
θ Lyrae star system properties
θ Lyrae 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 θ Lyrae double sysyem: