What sign is Sirius in?

Sirius, also known as Alpha Canis, is the brightest star in the whole day except the sun, but it is darker than Venus and Jupiter and brighter than Mars most of the time. Sirius generally refers to Sirius A, and its main system consists of a blue-white-blue dwarf and a blue-white dwarf, and its center of mass is about 8.6 ly away from the Earth.

1844, German astronomer Bessel inferred that Sirius is a binary star according to the wave pattern appearing in its motion path, because the star moves along a wavy trajectory in the nearby space, and thus inferred that it has a companion star with an orbital period of about 50 years. This companion star was first seen by American astronomer A Clark in 1862 with his homemade refracting telescope.

Sirius is the brightest star in the whole day, and its visual magnitude is-1.46, etc. In western constellations, it is the binary star of Canis Canis. Of course, the ancients in our country also noticed this bright star and called it "Wolf Star", which is located in the south of Queqiu and the most striking star in Su Jing. In the past, this star refers to the invading aliens, and its change of light and shade indicates the security of the frontier. Therefore, for the peace of the territory, the ancients set up a bow-"arrow" to shoot wolves in the southeast of "Wolf Star". The bow composed of these nine stars is very vivid. The arrow is on the string, the bow is round, and the arrow points directly at the "Wolf Star" in the northwest. Su Shi once wrote a description of this image: "I can bow like a full moon, look northwest and shoot Sirius." However, the main function of this longbow is to deter wolves by force, and the real means of catching wolves depends on a wolf trap surrounded by "Military City" 13 stars not far west of it. In order to lure Sirius, the hunter also deliberately placed a "pheasant" 1 star as bait in the trap. [ 1]

Sirius is easy to see only in winter or early spring. There are several ways to find Sirius:

Samsung Orion is very easy to find, and Samsung closely arranged between two bright stars should also be able to see it. Looking southeast along Samsung, a very conspicuous star is Sirius. Walking along the hunter's belt to the southeast, you can see an unusually bright star flashing blue and white. This is the brightest star in the night sky: Sirius, with an apparent magnitude of-1.46. Sirius is the alpha star of Canis Canis, which forms the outline of a dog with other brighter stars in Canis Canis. Sirius is in the dog's mouth.

The method of Winter Triangle is not so intuitive. To the east of Betelgeuse, there is a bright Nanhesan, which is the bright star in the upper left corner of Orion. If the connection between Nanhesan and Betelgeuse is south of perpendicular bisector, you will find him. Betelgeuse, Sirius and Nanhesan form the famous "Winter Triangle".

Both of the above methods are commonly used. In fact, the easiest way to find Sirius is to look at the southern sky around 22: 00 in the evening before and after the Spring Festival. The height angle of the brightest star is about 40, which star is the brightest under the premise of excluding planets. The orbits of planets in the night sky are generally similar to those of the moon, and Sirius is lower.

In China, Sirius's trajectory is always in the south of the world. The farther north, the lower Sirius's altitude angle.