IC 5117
IC 5117 is a young, compact planetary nebula located in the constellation Cygnus. It was discovered in 1905 by Scottish-American astronomer Williamina Fleming. It is distinguished by its small angular size of approximately 1.2 arcseconds, making it appear almost stellar when observed.[1]
Physical Characteristics
Density and Temperature
The surrounding gas of the nebula is notably dense, with an estimated 90,000 molecules per cubic centimeter, and maintains a temperature around 12,000 Kelvin. The central star is even hotter, with an estimated temperature of 120,000 Kelvin.
References
- ↑ "Planetary Nebula IC 5117 | Deep⋆Sky Corner". www.deepskycorner.ch. Retrieved 2025-01-08.
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