The Constellation Lacerta

by Dominic Ford
Lacerta Lacerta
The constellation Lacerta. Roll mouse over to see labels.
Source: Stellarium.

Lacerta is a small northern constellation which appears highest in the midnight sky in the months around August.

It was introduced by the Polish astronomer Johannes Hevelius in 1690, filling an area of sky between Cygnus and Andromeda which lacks any bright stars.

Lacerta represents a lizard, though it only contains one star brighter than fourth magnitude. It is home to the open clusters NGC 7243 and NGC 7209, as well as the variable object BL Lac, the prototypical example of a blazar. Varying between magnitude 14 and 17, however, BL Lac is extremely faint and can only been seen through the largest amateur telescopes.

Date First Appeared
1690 (Hevelius)
Sky Area
0.5% of the sky
200.7 square degrees
Messier Objects
Lacerta contains no Messier objects
Caldwell Objects
Lacerta contains the following Caldwell object: C16.
The following constellations neighbor Lacerta: Andromeda, Cassiopeia, Cepheus, Cygnus, Pegasus.
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Brightest Objects in Lacerta

Stars Open Clusters Globular Clusters Galaxies
Stars Open Clusters Globular Clusters Galaxies
α-Lac (mag 3.8) NGC 7243 (mag 6.4) NGC 7242 (mag 12.0)
1-Lac (mag 4.1) NGC 7209 (mag 7.7) NGC 7248 (mag 12.4)
5-Lac (mag 4.4) IC 1442 (mag 9.1) NGC 7250 (mag 12.6)
β-Lac (mag 4.4) NGC 7245 (mag 9.2) NGC 7240 (mag 13.8)
11-Lac (mag 4.5)
HD 211073 (mag 4.5)
6-Lac (mag 4.5)
2-Lac (mag 4.5)
4-Lac (mag 4.6)
9-Lac (mag 4.6)
10-Lac (mag 4.9)
15-Lac (mag 5.0)
HD 216946 (mag 5.0)
HD 209945 (mag 5.1)
13-Lac (mag 5.1)
HD 214665 (mag 5.2)
DD Lac (mag 5.2)
EW Lac (mag 5.3)
HD 210715 (mag 5.4)
HD 216174 (mag 5.4)
HD 211096 (mag 5.5)
EN Lac (mag 5.6)
8-Lac (mag 5.7)
HD 211211 (mag 5.7)
HD 216831 (mag 5.7)




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