Jisusan, 144 light years away from the Earth, with a spectral luminosity level of B9.5lll, is the 37th bright star in the sky and a binary star system. Its main star belongs to a blue giant star, with a rotation period of about 2.7 Earth days, and its companion star is a yellow main sequence star, with a spectrum of Gv and an orbital period of about 500 Earth years
- Chinese name
- Jisusan
- Foreign name
- Kaus Australis
- Classification
- Blue white giant star
- Diameter
- 6.9 times the diameter of the sun
- surface temperature
- 9800K
- Apparent magnitude
- 1.85 etc
- Absolute magnitude
- -1.44 etc
- Distance from ground
- 145 light years
- Spectrum
- B9.5III
Sagittarius ε1， Apparent magnitude 1.85. Sagittarius ε2， Apparent magnitude 10. Jisu Sanhe Ji Su Si ， Ji Su Er , Jisuyi, Dousu II , and Sagittarius μ forms the bow held by men and horses, and the qi zhong ji su san is located in the lower part of the bow. The English name of Ji Su San is Kaus Australis, which means "the south of the bow" Sagittarius δ（ Ji Su Er ）"Kaus Meridiandlis" middle of the bow ", Sagittarius λ（ Dousu II ）Kaus Borealis "North of the bow". Jisusan is a bright blue white star, which is very conspicuous in the southern part of Sagittarius. Its surface temperature and Sirius Similar, but much larger in diameter and mass. Its mass is 3.5 times that of the sun, its diameter is nearly 7 times that of the sun, and its radiation energy is 400 times that of the sun. This star has left the main star sequence and is slowly expanding into a giant star. When it was the main sequence star, it was Xuanyuan XIV Very similar Blue dwarf 。 Ji Su San, Epsilon Sagittarius. The 37th bright star in the whole day, apparent magnitude 1.85, absolute magnitude -1.44, distance 145 Light year ， spectrum The photometric level is B9.5III. Sagittarius Same Zodiac In astrology, the ecliptic 12 constellations yes universe A pronoun for position. Zodiac 12 constellation It represents 12 basic character archetypes. When a person is born, the stars fall into the position of the zodiac, which just shows a person's innate character and talent. Zodiac 12 constellation It symbolizes the psychological level. The zodiac signs reflect the way a person behaves. So the zodiac is divided into 12 constellations, called the 12 constellations of the ecliptic. In order Aries 、 Taurus 、 Gemini 、 Cancer 。 （ Sagittarius Also called the zodiac“ sagittarius ”）, summer night, from Aquila The Altair star can be found southward along the Milky Way. because Silver core It is in the direction of Sagittarius, so this part of the Milky Way is the widest and brightest. our country ancient hold Sagittarius This one region The star of is divided into two parts, Nandou Six Stars yes Sagittarius ， chiron Star genus under bow and arrow Winnowing Basket 。 Buckets are used to measure rice, and dustpans are used to lift grain. They are all Farm implements , often called together. 
