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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: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
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All Constellations » Lacerta » 

10 Lacertae

Altitude: 6.8°   Azimuth: 29.8°   Direction: North-North-East

10 Lacertae is a double main-sequence star in the constellation of Lacerta.

10 Lacertae visual magnitude is 4.88. Because of its moderate brightness, 10 Lacertae should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The proper motion of 10 Lacertae is 0.001 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of 10 Lacertae star
DSS2 image of 10 Lacertae. The red arrow shows the motion of 10 Lacertae during the next 100000 years (1.67 arcmin in Right Ascension and -8.33 arcmin in declination);

Key facts about 10 Lacertae


10 Lacertae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 6.8°
Azimuth: 29.8°
Direction: North-North-East

Celestial coordinates and finder chart of 10 Lacertae

10 Lacertae 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 10 Lacertae are provided in the following table:

22h 39m 15s
+39° 03’ 01”

The simplified sky map below shows the position of 10 Lacertae in the sky:

Finder chart 10 Lacertae star
Simplified finder chart for 10 Lacertae.

Visibility of 10 Lacertae from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

10 Lacertae is circumpolar and transits at 12:27 UTC (altitude: 77.6°)

Distance of 10 Lacertae from the Sun and relative movement

10 Lacertae is distant 1,058.44 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

324.68 pc
1,058.44 ly
-10 km/s
0.001 arcsec/year
-0.005 arcsec/year

Spectral properties of 10 Lacertae

10 Lacertae belongs to spectral class O9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 10 Lacertae is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of 10 Lacertae. Attribution: Richard Powell / CC BY-SA

10 Lacertae star system properties

10 Lacertae 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 10 Lacertae double sysyem:

62.2 arcsec

Alternative designations of 10 Lacertae

10 Lacertae