NGC 5882
Template:Short description Template:Infobox nebula
NGC 5882 is a small[1] planetary nebula[2] in the southern constellation of Lupus, positioned about 1.5° to the southwest of the star Epsilon Lupi.[3] It was discovered by English astronomer John Herschel on July 2, 1834 from the Cape of Good Hope observatory.[1] John L. E. Dreyer described it as "very small, round, quite sharp".[4] It is located at a distance of approximately Script error: No such module "convert". from the Sun.[5]
This nebular region consists of the cast-off outer atmosphere of an aging star. It is roughly elliptical in shape with several clumps of ionized material, and is surrounded by a larger region of low-level emission that extends for three times the nominal diameter of the main nebula.[2] The nebula is expanding with an average velocity of Script error: No such module "val".. It consists of two shells: the inner shell is elliptical and measures 11″ × 6″, while the more rapidly expanding outer shell is rounder with a diameter of Script error: No such module "val".. The inner shell has what appears to be multiple bubble-like shapes. The clumps in the outer shell may be the result of instabilities.[6]
The elemental abundances of the nebula are very similar to those in the Sun, except for a times two enrichment of nitrogen. The latter suggests that the central star did not go through second dredge-up. The central star has an apparent visual magnitude of 13.43. It shines with 830 times the luminosity of the Sun and has 22.7% of the Sun's radius.[2] It is displaced slightly from the center of symmetry for the nebula.[6]
References
<templatestyles src="Reflist/styles.css" />
Cite error: <ref> tag with name "simbad" defined in <references> is not used in prior text.
<ref> tag with name "GaiaDR2" defined in <references> is not used in prior text.Script error: No such module "Check for unknown parameters".