What do you know about Cepheus?

In constellation knowledge, each constellation has different characteristics and meanings. In addition to several well-known constellations, there are many constellations that people usually don't pay much attention to, such as Cepheus. Next, the constellation knowledge will introduce you to what Cepheus is. Let's have a look!

Cepheus is one of the polar constellations, and its adjacent constellations are Ursa minor, Draco, Cygnus, Scorpio, Cassiopeia and Deer Leopard. Its alpha star is Scorpio. The whole constellation can be seen all year round, especially in autumn night. It is next to the North Star, far from the Big Dipper. Most of Cepheus is submerged in the Milky Way, forming a slender and skewed pentagon.

The most beautiful celestial body in Cepheus is the Iris Nebula, also known as the Rainbow Nebula (NGC7023), which is located in the star-rich area of Cepheus 1300 light years away. Nebula material surrounds a huge, hot, apparently still in the formation stage, leaking secret red light, telling us that a large number of hydrogen atoms are excited by invisible but strong ultraviolet light emitted by the star on both sides of the bright central region of the star.

IrisNebula, also known as rainbow nebula and blue rainbow nebula, numbered NGC7023 and C4, is a bright reflection nebula located in Cepheus, with a brightness of about 7, about 1300 light-years away from the Earth and a diameter of about 6 light-years.

Elephant trunk nebula, numbered IC 1396, is about 2400 light years away from the earth and has a brightness of 3.5. It is a star-forming region composed of gas and dust clouds.

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