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Draco

A circumpolar constellation, Draco revolves around the North Pole and is only present in the northern hemisphere. Its head is the easiest way to spot it in the night sky, consisting of four stars in a trapezoid and burning brightly just north of Hercules. This tail, then slithers through the sky and ends between the Big and Little Dippers. In Latin, Draco means ‘the dragon’ and is clearly visible in the month of July. It is a constellation of the Ursa Major family and was first catalogued by the Greek astronomer Ptolemy in the 2nd century. Let us discuss this constellation in detail.
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Dorado

One of the constellations discovered late in the 16th century is Dorado. A small constellation in the southern hemisphere, Dorado was one of the constellations discovered by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. However, the Dutch astronomer Petrus Plancius listed it in the 16th century and by the 17th and 18th century, the constellation was also known as Xiphias, the swordfish. In Spanish, Dorado means ‘dolphinfish’. The constellation is represented as the colourful dolphinfish which is found in tropical waters and not the goldfish found commonly in plants and aquaria. It belongs to the Johann Bayer family of constellations and is best visible in the month of January at 9 pm.
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Delphinus

It is an interesting fact that there are three brightest stars in the constellation. They are Rotanev, Beta and Delphini. Delphini further has five stars. Delphinus or the Dolphin is a small constellation in the northern hemisphere. It is said that one of the oldest stars Rho Aquilae, which is about 50 million years old had belonged to the constellation Aquila until 1992 and later crossed the border and moved to Delphinus. It was first catalogued by the Greek astronomer Ptolemy in the 2nd century. Also, Delphinus was sometimes referred to as the Job’s Coffin due to its long and box–like shape. It belongs to the Heavenly Waters family of constellations and is clearly visible in the month of October.
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