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Tuesday 19 September 2017 - 20:44:26Posted by Bobby
Invention of Lacerta
Lacertais a small and insignificant constellation of the northern sky on the edge of the Milky Way, sandwiched between Cygnus and Andromeda. It was introduced in the 17th century by the polish astronomer Johannes Hevelius. Its brightest star is Alpha Lacertae, magnitude 3.8. Three naked-eye novas have erupted within its boundaries during the late 20th century.
Depiction: The Lizard
Highest in the Sky: September to October
Size Ranking: 68th
Coverage Area: 201 Sq. Degrees
Right Acension: 22 hours
Visibility: 90°N to 33°S
8 Lacertae: Quadruple star system
IC 5217: Planetary nebula
NGC 7209: Open cluster
NGC 7243: Open Cluster
NGC 7245: Open Cluster
Best Viewed Objects/Stars
The nucleus of a distant elliptical galaxy, originally classified as a variable star, hence its designation. It has given its name to a class of similar objects, the BL Lacertae (or BL Lac) objects, which are thought to be galaxies with powerful energy sources, perhaps massive black holes, at their centers. BL Lacertae varies between about 12th and 16th magnitudes.