The expansion shell of the star has a temperature of 50 million degrees Fahrenheit. NASA’s Chandra X-ray telescope has captured various images of this supernova. Cas A is the remnant of a massive star that exploded in a supernova 300 years ago. Rho Cas is one of the most luminous stars in the Milkyway with a luminosity 550,000 times that of the Sun.ĥ. The star HD 17156 is known to have a transiting planet orbiting it.Ĥ. So its brightness varies between 2nd mag and 3rd mag.ģ. It throws off shells of gas at unpredictable intervals.
Gamma Cas, sometimes called Tsi, is an unstable blue subgiant. The famous supernova SN1572, also known as Tycho’s star was observed in Cassiopeia.Ģ.
#Cassiopeia stars free#
Image: A constellation map of Cassiopeia (Image credit: Wikimedia Commons under a GNU Free Documentation license.) Interesting Factsġ. To learn humility, Cassiopeia was banned to the sky hanging half of the time head downward. Andromeda was saved from death by Perseus. To punish her, her daughter was chained to a rock on the coast as a sacrifice for a sea monster. Because she thought herself more beautiful than the daughters of Nereus, a god of the sea, she challenged the anger of the god Poseidon. Mythology: Cassiopeia was the wife of Cepheus and the mother of Andromeda. Best visible: 2100 hrs in the month of Novemberġ3. Other interesting objects: IC 59 and 63, NGC 281, 76.ġ2. Messier objects: Messier 52 and Messier 103 (both open clusters)ġ1. Bordering constellations: Camelopardalis, Cepheus, Perseus, Lacerta, Andromedaġ0.
Visible from: latitudes between +90° and -20°ĩ.
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