What is the dark constellation of sextant?

Sextant is a dark constellation between Leo and Ophiuchus. It was set by Polish astronomer Jahannes Hewelius to commemorate his sextant. It has long been used to measure the height of celestial bodies and is one of the zodiac constellations. The center is located at right ascension 10, declination 10 and declination -2 degrees. Only one star is four, and the others are weak.

20 18, 10 In June, astronomers from the Canary Islands Institute and Laguna University published a new paper in the Monthly of the Royal Astronomical Society, saying that the history of this dwarf galaxy is about 65.438+0.2 billion years, and it is very small, with a mass only 100,000 times that of the Milky Way, or after swallowing a smaller neighbor.