δ2 Lyrae (delta2 Lyrae)

Below the horizon. Rise: 17:43 | Tran: 4:26 | Set: 15:06

Alt: -0.29° Az: 346.21° Direction: North-North-West

δ2 Lyrae is a variable and multiple bright giant star of spectral class M4 in the constellation of Lyra.

δ2 Lyrae visual magnitude is 4.3. Because of its moderate brightness, δ2 Lyrae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of δ2 Lyrae. The red arrow shows the motion of δ2 Lyrae during the next 10000 years (-1.50 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 55m 23s

Declination +36° 55’ 56”

Hour Angle 10h 50m 36s

Sidereal Time 05h 46m 00s

J2000

Right Ascension 18h 54m 30s

Declination +36° 53’ 56”

Galactic Coordinates

Galactic Longitude 66.93°

Galactic Latitude 15.32°

Finder Chart

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Finder chart for δ2 Lyrae (delta2 Lyrae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.3

Class Bright giant

Absolute magnitude -2.90

Spectral Type M4II

Color Index (B-V) 1.68

Temperature 3541K

The red dot in the diagram below shows where δ2 Lyrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of δ2 Lyrae. Attribution: Richard Powell / CC BY-SA

Star System Properties

δ2 Lyrae 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 δ2 Lyrae double sysyem:

Main star magnitude 4.3

Secondary star magnitude 11.3

Magnitude difference 7

Separation 86.2 arcsec

Distance, Radial Speed, Proper Motion

δ2 Lyrae is distant 898.07 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

Distance (parsec) 275.48

Distance (light year) 898.07

Radial Speed -26 km/s

Proper Motion RA -0.009 arcsec/y

Proper Motion Dec 0.01"/y

Alternative Designations

Bayer designation δ2 Lyrae
(delta2 Lyrae)

Flamsteed designation 12 Lyrae

Henry Draper Catalogue HD175588

SAO Catalogue SAO67559

Hipparcos Catalogue HIP92791

Durchmusterung Catalogue BD+36 3319

General Catalogue of Variable Stars Del2 Lyr

Aitken Double Star Catalogue ADS11825

Visibility from Your Location

Today's δ2 Lyrae (delta2 Lyrae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 53.1° RISE 17:43

Max altitude: 75.5° TRANSIT 4:26

Azimuth: 306.9° SET 15:06

Set Location

Other stars in Lyra