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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Lyra » 

θ Lyrae (theta Lyrae)

Altitude: 61.7°   Azimuth: 103.9°   Direction: East-South-East

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.

Image of θ Lyrae (theta Lyrae) star
DSS2 image of θ Lyrae. The red arrow shows the motion of θ Lyrae during the next 100000 years (-1.67 arcmin in Right Ascension and 6.67 arcmin in declination);

Key facts about θ Lyrae

4.36
Hypergiant

θ Lyrae (theta Lyrae) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 61.7°
Azimuth: 103.9°
Direction: East-South-East

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:

19h 16m 22s
+38° 08’ 00”
69.9°
11.86°
Lyra

The simplified sky map below shows the position of θ Lyrae in the sky:

Finder chart θ Lyrae (theta Lyrae) star
Simplified finder chart for θ Lyrae (theta Lyrae).

Visibility of θ Lyrae from your location

Location: Greenwich, United Kingdom edit_location_alt
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 edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 51.9°
Max altitude: 76.7°
Azimuth: 308.1°

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.

235.85 pc
768.87 ly
-31 km/s
-0.001 arcsec/year
0.004 arcsec/year

Spectral properties of θ Lyrae

θ Lyrae belongs to spectral class K0 and has a luminosity class of II corresponding to a hypergiant star.

-2.50
K0II
4194K

The red dot in the diagram below shows where θ Lyrae is situated in the Hertzsprung–Russell diagram.

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

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:

4.36
9.06
4.7
100.2 arcsec

Alternative designations of θ Lyrae

θ Lyrae
(theta Lyrae)
SAO68065
SAO68065