ζ2 Lyrae (zeta2 Lyrae)

Above the horizon. Rise: 7:43 | Tran: 18:42 | Set: 5:44

Alt: 69.10° Az: 122.84° Direction: East-South-East

ζ2 Lyrae is a variable and multiple hypergiant star of spectral class F0 in the constellation of Lyra.

ζ2 Lyrae visual magnitude is 5.73. Because of its faintness, ζ2 Lyrae is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of ζ2 Lyrae. The red arrow shows the motion of ζ2 Lyrae during the next 10000 years (3.67 arcmin in Right Ascension and 3.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 45m 39s

Declination +37° 37’ 17”

Hour Angle 22h 31m 03s

Sideral Time 17h 16m 43s

J2000

Right Ascension 18h 44m 48s

Declination +37° 35’ 39”

Galactic Coordinates

Galactic Longitude 66.85°

Galactic Latitude 17.37°

Finder Chart

Simplified finder chart for ζ2 Lyrae (zeta2 Lyrae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.73

Class Hypergiant

Absolute magnitude 2.41

Spectral Type F0IV

Color Index (B-V) 0.28

Temperature 7591K

The red dot in the diagram below shows where ζ2 Lyrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ζ2 Lyrae. Attribution: Richard Powell / CC BY-SA

Star System Properties

ζ2 Lyrae is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the ζ2 Lyrae double sysyem:

Main star magnitude 5.73

Secondary star magnitude 7.13

Magnitude difference 1.4

Separation 43.7 arcsec

Distance, Radial Speed, Proper Motion

ζ2 Lyrae is distant 150.09 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

Distance (parsec) 46.04

Distance (light year) 150.09

Radial Speed -25 km/s

Proper Motion RA 0.022 arcsec/y

Proper Motion Dec 0.019"/y

Alternative Designations

Bayer designation ζ2 Lyrae
(zeta2 Lyrae)

Flamsteed designation 7 Lyrae

Henry Draper Catalogue HD173649

SAO Catalogue SAO67324

Hipparcos Catalogue HIP91973

Durchmusterung Catalogue BD+37 3223

General Catalogue of Variable Stars 11311

Aitken Double Star Catalogue ADS11639

Visibility from Your Location

Today's ζ2 Lyrae (zeta2 Lyrae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.4° RISE 7:43

Max altitude: 76.1° TRANSIT 18:42

Azimuth: 307.6° SET 5:44

Set Location

Other stars in Lyra