List of protoplanetary nebulae

This is a list of protoplanetary nebulae. These objects represent the final stage before a planetary nebula. During this stage, the red giant star begins to slowly expel its outermost layers of material. A protoplanetary nebula usually glows with the light from its parent star. This stage is usually brief, typically lasting no more than a few thousand years.

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List

Name	Other designation	Date discovered	Distance (ly)
Boomerang Nebula	Centaurus Bipolar Nebula		About 5,000
Calabash Nebula	OH231.8+4.2		About 4,200
Egg Nebula	CRL 2688	1996	About 3,000
Frosty Leo Nebula	IRAS 09371+1212		About 3,000
Red Rectangle Nebula	HD 44179	1973	2,300 ± 300
Gomez's Hamburger	IRAS 18059-3211	1985	6500
Cotton Candy Nebula	IRAS 17150-3224
Water lily nebula	IRAS 16594-4656
	IRAS 22036+5306		About 6,500
Westbrook Nebula	IRAS 04395+3601
	IRAS 13208-6020
	IRAS 20068+4051
	IRAS 23166+1655
M1-92	IRAS 19343+2926		About 8000
	IRAS 19024+0044		11 000
	IRAS 17163-3907		13 000
Minkowski's Butterfly	M2-9		2 100

Nebula

List

Visible nebula	Dark nebula Diffuse nebula Emission nebula Planetary nebula Supernova remnant Nova remnant H II region Reflection nebula Variable nebula Preplanetary nebula

Pre-stellar nebula	Giant molecular cloud Bok globule Evaporating gaseous globule Solar nebula

Stellar nebula	Nova remnant Protoplanetary nebula Wolf–Rayet nebula

Post-stellar nebula	Planetary nebula Supernova remnant Pulsar wind nebula Supershell

Clouds	Interstellar cloud Infrared cirrus High-velocity cloud H I region

Morphology	Bipolar nebula Pinwheel nebula

Lists	List Diffuse Planetary (PNe) Protoplanetary (PPNe) Supernova renmants (SNRs)

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