IC 4642

IC 4642
Nebula
	The IC 4642 nebula.
Observation data: {{{epoch}}} epoch
Class	Planetary nebula
Right ascension	17h 13m 51s
Declination	-55 25’ 39”
Notable features	Helium and Nitrogen depleted
	See also: Lists of nebulae

Last updated May 17, 2025

IC 4642 is a planetary nebula located in the constellation of Ara. It is elliptical in shape with multiple shells. It is depleted in the elements helium and nitrogen.^[1]^[2]

Central star

The central star in IC 4642 is a variable star with no definitive spectral classification. It has been referred to as an absorption line star. It may be accompanied by a sub-stellar companion object.^[1]

References

1 2 Mohery, Mahmoud; Ali, Alaa; Hamam, Kholoud Ahmed; Khames, Aya Atef; Alsubaie, Abdullah Saad (2025-05-13). "Uncovering the integral spectral characteristics of the planetary nebula IC 4642". Scientific Reports. 15 (1): 16539. doi:10.1038/s41598-025-00168-2. ISSN 2045-2322.
↑ "IC 4642 - Planetary Nebula in Ara | TheSkyLive.com". theskylive.com. Retrieved 2025-05-13.

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[:0-1] 1 2 Mohery, Mahmoud; Ali, Alaa; Hamam, Kholoud Ahmed; Khames, Aya Atef; Alsubaie, Abdullah Saad (2025-05-13). "Uncovering the integral spectral characteristics of the planetary nebula IC 4642". Scientific Reports. 15 (1): 16539. doi:10.1038/s41598-025-00168-2. ISSN 2045-2322.

[2] "IC 4642 - Planetary Nebula in Ara | TheSkyLive.com". theskylive.com. Retrieved 2025-05-13.

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