Triangulum is one of the 48 constellation established by Claudius Ptolemy. Its area is 132 square degrees and it has 26 stars that can be seen with the naked eye. According to the legend of "Katastelismoi," there are two theories: Aries is a dim constellation, and the other is that it represents the triangle shape created by the Nile River in Egypt. [Sources of the story] Encyclopedia of constellation, New Edition (Kawade Shobo Shinsha, February 2011) Encyclopedia of the Cultural History of Stars (Hakusuisha, December 2019)

Tucana is one of the new southern constellation created during the Age of Discovery. Its area is 295 square degrees, and it can see 43 naked-eye stars. Based on observations made in the Southern Hemisphere by the Dutch Peter Keyser and Frederick Houtman, Petrus Plancius published it in 1598, drawing it on celestial sphere. It is said that in 1603, Johann constellation of Germany included it on the Uranometria Star chart, and it became widely known. Tucana is written as "Great Beaked Bird" and refers to a South American bird with a large beak. [Source of the story] Encyclopedia of the Constellations, New Edition (Kawade Shobo Shinsha, February 2011) Encyclopedia of the Cultural History of Stars (Hakusuisha, December 2019)

Cepheus is one of the Tremmy 48 constellation set by Claudius Ptolemy. It has an area of 588 square degrees and 148 naked stars. Modeled after the king of Ethiopia in ancient Greek folklore, he is considered the father of Andromeda and the husband of Cassiopeia. Although it is located just east of Cassiopeia, it is difficult to find because there is no conspicuous star alignment. [Source of the story] Zenten constellation Encyclopedia New Edition Kawade Shobo Shinsha Co., Ltd. (February 2011) Hoshi no Bunka Historical Encyclopedia, Hakusuisha Co., Ltd. (December 2019)

Aries is one of the 48 Ptolemy constellation established by Claudius Ptolemy. It is also one of the 12 ecliptic constellation, with an area of 441 square degrees and 85 naked eye stars. According to the Katasterismoi, Aries is a flying ram with golden fleece. There is a legend that when Phrixus, the son of Athamas, King of Thessaly, and his sister Helle were bullied by their stepmother Ino and were about to be sacrificed to the gods, their mother Nephele sent a flying golden ram obtained from Hermes or Zeus to help them escape. [Source of the story] New Edition of the Encyclopedia of the Constellations (Kawade Shobo constellation Co., Ltd. (February 2011) Encyclopedia of the Cultural History of Stars (Hakusuisha Co., Ltd. (December 2019)

Andromeda was created by Claudius Ptolemy. It is widely known as constellation constellation represents the image of Princess Andromeda, an ancient Ethiopian princess, chained up. When the Ethiopian royal family was ruled by King Cepheus and Queen Cassiopeia, Cassiopeia, who was very beautiful and had a strong sense of pride, said, "Even the daughters of the sea god cannot compare to my beauty." Hearing this, Poseidon, the god of the sea, was so angry that he sent a giant whale living in the sea to Ethiopia, causing a tsunami. To put an end to this disaster, Cassiopeia and Cepheus sacrificed their daughter Andromeda as ordered. It is said that Perseus came to Andromeda 's rescue and Andromeda were then married. [Source of the story] New Edition of the Encyclopedia of constellation (Kawade Shobo Shinsha Co., Ltd. (February 2011) Encyclopedia of the Cultural History of Stars (Hakusuisha Co., Ltd. (December 2019)

Capricornus was established by Claudius Ptolemy. Its area is 414 square degrees and it has 79 stars visible to the naked eye. It is one of the 48 constellation of Claudius Ptolemy and also one of constellation ecliptic In Mesopotamia it was called Suhul-Mash. Suhul means a giant carp in Sumerian, and Mash means a male goat. It depicts the god Ea with the upper body of a goat and the lower body of a fish. Ea was the father of the chief god Marduk in Babylonia, and the god of water and wisdom. It was passed down to Greece in the form of a goat-fish and was called Aegokeros. It gradually became the same as the goat-shaped faun Pan. Pan is said to be the son of Hermes or Zeus, with the upper body of a human and the lower body of a goat, and has goat horns. Long ago, when the gods were gathered in Egypt, they were attacked by the monster Typhon. The gods were frightened and transformed into various forms. In the story, Pan jumped into the river and escaped by turning into a goat above the water surface and a fish below the water surface. It is said that Zeus added Pan to constellation because his appearance was so comical. [Source of the story] Encyclopedia of the Cultural History of Stars, Hakusuisha Publishing Co., Ltd. (December 2019) Encyclopedia of constellation, Kawade Shobo Shinsha (February 2011)

The Cassiopeia was set by Claudius Ptolemy. In Japan, it can be seen in the northern sky around sunset in autumn. It is an constellation that imagines Princess Cassiopeia being strapped to a chair. When the Ethiopian royal family was ruled by King Cepheus and Queen Cassiopeia, Cassiopeia, who was very beautiful and self-respecting, said, "My beauty is no match for the daughters of the god of the sea." When Poseidon, the god of the sea, heard this, he became angry and sent a large whale living in the sea to Ethiopia to cause a tsunami. To settle this disaster, Cassiopeia and Cepheus sacrifice their daughter Andromeda in accordance with the trust. [Source of the story] Zenten constellation Encyclopedia New Edition, Kawade Shobo Shinsha Co., Ltd. (February 2011) First constellation Guide, Seibundo Shinkosha Co., Ltd. (July 2001) constellation Astronomical Observation Encyclopedia, Seibido Publishing (2002)