Cassiopeia the Queen, a constellation of shiny stars within the northern hemisphere, is a well-loved fixture of fall and winter night skies.
Also called Alpha (α) Cassiopeiae, Schedar is its brightest star. And with the assistance of a star map, this orange-colored star is simple to seek out and is commonly utilized by stargazers to find the Andromeda Galaxy.
The way to discover Schedar
By the way in which, from mid-northern latitudes, Cassiopeia is circumpolar. Consequently, it circles endlessly across the north celestial pole, by no means (or hardly ever, relying in your latitude) dipping under your horizon. Nonetheless, the most effective time to see Cassiopeia is throughout fall and winter evenings, since that’s when the constellation rides highest within the sky.
Principally, the brilliant stars of Cassiopeia hint out an M or W, relying on its place within the sky and your perspective. And Schedar, the brightest star in Cassiopeia, is positioned on the W’s bottom-right tip (or the M’s upper-left tip).
Science of Schedar
The star Schedar is 228 light-years away and shines steadily at magnitude 2.2. Despite the fact that skywatchers a few centuries in the past steered that the star diversified in brightness, trendy astronomers have discerned no fluctuations.
Moreover, Schedar is about 4 instances the mass of our solar. However, Schedar is cooler than our solar. That’s as a result of it’s a red giant star. Plus, like all big stars, it rotates slowly on its axis. Thus, Schedar takes roughly 102 days to rotate as soon as, in distinction to about 25 days for our solar. Now that it’s within the late phases of stellar evolution, Schedar is about 45 instances the solar’s diameter as a result of growth of its outer layers.
The sky lore of Alpha Cassiopeiae
Despite the fact that it’s brightest star within the constellation Cassiopeia the Queen, Schedar doesn’t have any unbelievable tales behind it. However, like all stars, it has its personal attention-grabbing historical past. In truth, the star’s title, Schedar, derives from the Arabic phrase for breast.
By the way in which, Schedar’s place is: R.A. 00h 40m 30s, Dec. +56° 32′ 14″
Backside line: Schedar, the brightest star within the outstanding northern constellation Cassiopeia, is well seen many of the 12 months from northern latitudes.