Lacerta


Clickable Image

Map created in Guide 7.0 with the figure outline based on Johannes Hevelius' Uranographia (1690). Click on the object's name to access its image or click on the name of adjacent constellation to see its map.


Lacerta, the Lizard, is another invention of the Polish astronomer Johannes Hevelius published in his Uranographia in 1690.


While there are many cluster located there, the main reason for Lacerta's fame is BL Lacertae. This object, originally identified as an irregular variable star, is now known to correspond to a quasi-stellar object a.k.a. an active galactic nucleus (AGN).


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Jan Wisniewski