Aquarius nebulae and planetary nebulae

What are the nebulae and planetary nebulae in Aquarius? The sky will answer for you. Nebula is a planetary nebula located in Southern Aquarius and the youngest known planetary star. 1950, Karl Henize, an American, classified the nebula as type A or type B Hα star. Nebula cluster number type magnitude Cr307 open cluster 09.2NGC6 193 open cluster 05.2NGC6200 open cluster 07.4NGC6204 open cluster 08.2Hogg22 open cluster 06.7 NGC 622 1 spiral galaxy 09.9NGC6250 open cluster 05.9 IC46565438+. Open Cluster 06.9NGC6362 Globular Cluster 08.3NGC6397 Globular Cluster 05.7 Stingray Nebula (HEN- 1357) is a planetary nebula located in the southern constellation and the youngest known planetary star. 1950, Karl Henize, an American, classified the nebula as type A or type B Hα star. 197 1 year, it is observed that it belongs to Supergiant star of type B 1, and it is a branch of backward superstars. At 1989, it was found that it had become a planetary nebula. In the conclusion drawn by the researchers, the light of nebula cloud gas reaches the earth after 1975, which is about 1987. This celestial body is more than 18000 light years away from the earth. During 1995, it was observed that its central star was rapidly evolving into an Ada-type white dwarf. From 1987 to 1995, it turned dark by 3 times. In addition, the central star system consists of a main star and a companion star, and the angular distance between the companion star and the main star is 0.3 seconds. In terms of mass, the mass of the main star is about 0.6 times that of the sun, the nebula is 0.0 15 times that of the sun, and the luminosity is 3000 times that of the sun.