Two super-nova remnants can also be seen in this field, including Tycho’s Star which went supernova in 1572, and Cassiopeia A, which exploded around 1660 and is recognized as the brightest radio source in the sky, excluding the solar system. This includes two Messier objects, namely M52 and M103, both open star cluster with the former containing around 190 stars, and the latter about 172. Other stars of interest in Cassiopeia includes Ruchbah (Delta Cassiopeia), a binary star system 100 light years distant, whose name means the ‘knee’ Segin (Epsilon Cassiopeia), a blue-white giant 440 light years away that is 2,500 times brighter than the Sun as well as the yellow-white stars Achird (Eta Cassiopeiae) and V509 Cassiopeiae the yellow hypergiant Rho Cassiopeiae and the blue-white subgiant Zeta Cassiopeiae.Ĭassiopeia lies in a phenomenal Milky Way star field, meaning that there are a number of impressive deep-sky objects ( DSOs) that are there for your viewing pleasure. The word Caph is Arabic, and refers to the ‘palm’ of a hand. It is almost 4 times the size of the Sun, and is around 30 times brighter. – Caph ( Beta Cassiopeia), the constellation’s third brightest star, is a yellow-white giant (F2 III-IV) situated around 50 light years from Earth that has an apparent magnitude of 2.27. Its name means ‘breasts’ in Arabic, as it marks the location of the queen’s heart. – Schedar ( Alpha Cassiopeia), the second brightest star in Cassiopeia, is an orange giant (K0IIIa) found about 280 light years from our solar system that shine with a magnitude of 2.24. It has a mass 15 times greater than our sun, shines 40,000 times brighter, and forms the central most star in the traditional ‘W’ shape of the constellation. – Gamma Cassiopeia, the constellation’s brightest star, is a blue (B0.5 IVe) variable star located nearly 600 light years away whose visual magnitude ranges between 1.6 and 3.0. We usually associate Cassiopeia with its five main luminous stars which make up the majority of the constellation, although there are actually 53 Bayer/Flamsteed designated stars: Perseus on his winged-horse Pegasus subsequently rescued Andromeda from Cetus, whom her father ( Cepheus) and mother (Cassiopeia) had tied to a rock to appease the monster, and so Poseidon decided to punish Cassiopeia all the same by tying her to a chair and placing her in the heavens where she still circles the northern sky, spending half her time upside-down. She even boasted that her beauty, and that of her daughter Andromeda, was greater than that of the Nereids (sea nymphs) and so, naturally, the fabled sea-god Poseidon himself took offense and sent a sea monster (Cetus) to ravage their kingdom. Cassiopeia is named after a vain Ethiopian queen from Greek mythology, and is surrounded in the night sky by a family of constellations associated with the legend of Perseus, including the hero’s winged horse Pegasus, the queen’s husband Cepheus, her daughter Andromeda, and the sea monster Cetus.Ĭassiopeia, mother of Andromeda, was a woman who prized vanity above respect for the Gods, which in ancient Greece was not the wisest of decisions for our self-absorbed heroine.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |