Everything about Cassiopeia Constellation totally explained
Cassiopeia (colloquially /ˌkæsiˈoʊpiə/) is a northern
constellation which
Greek mythology considered to represent the vain queen
Cassiopeia who boasted about her unrivaled beauty. It is one of the 88 modern constellations, and was also one of the 48 listed by
Ptolemy.
Notable features
Cassiopeia contains two stars visible to the naked eye that rank among the most luminous in the galaxy:
ρ Cas and
V509 Cas. The star
η Cas is a nearby (19.4
ly)
binary star comprising a yellow
Sun-like dwarf and an orange dwarf star. Cassiopeia looks like a W or a crown.
If we were to observe Earth's
Sun from
Alpha Centauri, the Sun would appear to be in Cassiopeia as a yellow-white 0.5 magnitude star. The famous "W" of Cassiopeia would become a zig-zag pattern with the Sun at the leftmost end, closest to
ε Cas.
Two Messier objects, Messier 52 (NGC 7654) and Messier 103 (NGC 581) are located in Cassiopeia. Both are open clusters and being 7th apparent magnitude objects they're easy targets with binoculars.
The
supernova known as
Tycho's Star, or
SN1572, was widely observed in Cassiopeia in 1572. The scientific description of this star was written by
Tycho Brahe, and its appearance is said to have lead
Johannes Kepler to become an
astronomer.
Further Information
Get more info on 'Cassiopeia Constellation'.
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