Astronomical phenomenon: What is a compass?

Compass is one of the southern constellations, which was divided by French scientist Llakaj in 1752. Located in the south, north and south, near the brightest South Gate II of Centauri, the whole constellation is completely immersed in the Milky Way. Compass Compass is one of the southern constellations, which was divided by French scientist Llakaj in 1752. It was originally named Compass Block, and later it was officially named Compass Block because it looks like a compass. There are not many bright stars in this constellation, and it is not very eye-catching in the sky, but it is only150,000 light years away from the earth, which is worth exploring and discovering. Celestial name: compass Latin name: Circinus Latin abbreviation: Cir symbol: compass right ascension: 15.08H declination: -59.02 area: 93 square degree area ranking: 85th bright star number: 1 brightest star: compass alpha meteor shower: unconnected constellation: wolf constellation. The best observation time of square ruler: May-June, the best observation latitude: 19 N to 90 S, the apparent magnitude of the brightest star: 3.2, the total visible area: 19 N-90 S, one of the southern constellations. Located in the south, north and south, near the brightest South Gate II of Centauri, the whole constellation is completely immersed in the Milky Way. 1752, Llakaj, a French astronomer, designated a constellation to commemorate the compass, an important tool enabling people to sail in the southern hemisphere, and named it Compass Block. A bright star is three stars with a magnitude of +3 to +5. Observation characteristics compasses can be seen all year round in the tropics and the south, and the best observation time is in late May, June and early July. The midnight peak of the compass is in August, and it is not so easy to see the compass after August. It was found that the name of French astronomer Nicolas Louis de Llakaj was 1752, and he described a constellation in the sky. In order to commemorate people sailing to the southern hemisphere with compasses, this divided constellation was named compass block. Later, because the three brighter stars in this constellation, 1, are in the south and the other two are in the north, arranged in a very sharp triangle, much like the mathematical tool used by people-compass, astronomers named this constellation after the compass seat. The celestial position compass is located between Sagittarius South, Tian Yanbei, Centauri South Triangle, near the south gate of the brightest star Centauri, and the whole constellation is completely in the Milky Way. The main adjacent constellations are Centauri, Fly, Tian Yan, Rectangular Ruler and Wolf.