description Sharpless 2-290 Overview
Sharpless 2-290 (also cataloged as Abell 31) is a planetary nebula located in the constellation Cancer at an approximate distance of 2,000 light-years from Earth. Estimated to be around 20,000 years old, it is one of the largest and oldest known planetary nebulae, with an asymmetrical shell measuring approximately 4 light-years across. The nebula consists of ionized gas ejected by a central white dwarf star, with the asymmetric structure resulting from the interaction between stellar winds and the surrounding interstellar medium. As an evolved planetary nebula, Sharpless 2-290 exhibits very low surface brightness that requires specialized astrophotography techniques to observe effectively.
help Sharpless 2-290 FAQ
What is Sharpless 2-290 also called?
Sharpless 2-290 is also cataloged as Abell 31. It is a planetary nebula in the constellation Cancer.
How far away is Sharpless 2-290?
It is located approximately 2,000 light-years from Earth. That distance places it within the Milky Way and makes it an object of interest for studies of evolved stars.
How old is Sharpless 2-290?
The nebula is estimated to be around 20,000 years old. Its large, diffuse appearance reflects the long period over which material from the former star has expanded into space.
What kind of object is Sharpless 2-290?
It is a planetary nebula created during the late evolution of a sun-like star, not a planet or a supernova remnant. The glowing shell consists of gas expelled by the star and illuminated by its hot central remnant.
explore Explore More
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
