2 Lacertae

Above the horizon. Rise: 20:26 | Tran: 3:50 | Set: 11:15

Alt: 49.09° Az: 320.75° Direction: North-West

2 Lacertae is a variable and double main-sequence star of spectral class B6 in the constellation of Lacerta.

2 Lacertae visual magnitude is 4.57. Because of its moderate brightness, 2 Lacertae 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 2 Lacertae. The red arrow shows the motion of 2 Lacertae during the next 10000 years (3.83 arcmin in Right Ascension and 0.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 22m 05s

Declination +46° 39’ 56”

Hour Angle 02h 28m 34s

Sidereal Time 00h 50m 39s

J2000

Right Ascension 22h 21m 01s

Declination +46° 32’ 12”

Galactic Coordinates

Galactic Longitude 97.79°

Galactic Latitude -8.86°

Finder Chart

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Finder chart for 2 Lacertae.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.57

Class Main-sequence

Absolute magnitude -1.40

Spectral Type B6V

Color Index (B-V) -0.1

Temperature 11573K

The red dot in the diagram below shows where 2 Lacertae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 2 Lacertae. Attribution: Richard Powell / CC BY-SA

Star System Properties

2 Lacertae 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 2 Lacertae double sysyem:

Main star magnitude 4.57

Secondary star magnitude 10.97

Magnitude difference 6.4

Separation 48.2 arcsec

Distance, Radial Speed, Proper Motion

2 Lacertae is distant 509.38 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 156.25

Distance (light year) 509.38

Radial Speed -10 km/s

Proper Motion RA 0.023 arcsec/y

Proper Motion Dec 0.005"/y

Alternative Designations

Flamsteed designation 2 Lacertae

Henry Draper Catalogue HD212120

SAO Catalogue SAO51904

Hipparcos Catalogue HIP110351

Durchmusterung Catalogue BD+45 3894

General Catalogue of Variable Stars 14130

Aitken Double Star Catalogue ADS15862

Visibility from Your Location

Today's 2 Lacertae rise, transit and set times from Tlacotepec de Mejía, México are the following (all times relative to the local timezone America/Mexico_City):

Azimuth: 43.3° RISE 20:26

Max altitude: 62.5° TRANSIT 3:50

Azimuth: 316.7° SET 11:15

Name:	Tlacotepec de Mejía, México
Latitude:	19° 11' 22.2" N
Longitude:	96° 50' 17.2" W
Timezone:	America/Mexico_City

Set Location

Other stars in Lacerta