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Tuesday 19 September 2017 - 08:10:02Posted by Bobby
Mythology of Cetus
Cetus,which straddles the celestial equator south of Pisces and Aries, is a large constellation representing the mythical sea monster from whose jaws Andromeda was rescued by the hero Perseus. The brightest star in the constellation is Beta Ceti, magnitude 2.0.
Depiction: The Whale
Highest in the Sky: October to December
Size Ranking: 4th
Coverage Area: 1,231 Sq. Degrees
Right Acension: 2 hours
Visibility: 64°N to 75°S
Omicron Ceti: Star
M77: Barred spiral galaxy
NGC 246: Skull Nebula
NGC 247: Spiral galaxy
NGC 1055: Spiral galaxy
Menkar, Alpha Ceti
Deneb Kaitos, Beta Ceti
Kaffaljidhma, Gamma Ceti
Baten Kaitos, Zeta Ceti
Deneb Algenubi, Eta Ceti
Deneb Kaitos Shemali, Iota Ceti
Mira, Omicron Ceti
Best Viewed Objects/Stars
Omicron Ceti (Mira)
A famous variable star. Mira is a red giant star, about 300 times larger than our Sun, that varies widely in brightness as it swells and contracts in size in a cycle that lasts approximately 11 months. At its brightest, it can reach 3rd or even 2nd magnitude. But it drops to 10th magnitude at its minimum. Mira, which was first identified as being variable in 1596, is a prototype of a class of long-period variables; referred to as Mira stars, they form the largest group of variable stars. Mira is Latin for "wonderful."
A nearby, Sunlike star. It is similar to the Sun in tepmerature and luminosity, and at a distance of 11.9 light years it is among the 20th closest stars to Earth. It appears of magnitude 3.5.
A spiral galaxy, seen face-on from Earth. A telescope shows it as a small, round patch. It is the brightest of a class of galaxies known as Seyfert galaxies, which have particularly bright centers.