IC 4406

IC 4406
Emission nebula
Planetary nebula
	Hubble Space Telescope view of IC 4406
Observation data: J2000 epoch
Right ascension	14h 22m 26.278s
Declination	−44° 09′ 04.35″
Distance	2.0 kly (600 pc) ly
Constellation	Lupus
Physical characteristics
Absolute magnitude (V)	-0.3
Notable features	-
Designations	Retina Nebula
	See also: Lists of nebulae

IC 4406, sometimes known as the Retina Nebula,^[4] is a planetary nebula near the western border of the constellation Lupus, the Wolf. It has dust clouds and has the shape of a torus. Despite this, it looks somewhat rectangular because it is seen from its side as viewed from Earth, almost in the plane^[2] of its equator.

^ ^a ^b "SIMBAD Astronomical Database". Results for IC 4406. Retrieved 2006-12-19.
^ ^a ^b Cite error: The named reference ODelletal2003 was invoked but never defined (see the help page).
^ Cite error: The named reference ODelletal2002 was invoked but never defined (see the help page).
^ Cite error: The named reference Chadwick was invoked but never defined (see the help page).

[simbad-1] "SIMBAD Astronomical Database". Results for IC 4406. Retrieved 2006-12-19.

[ODelletal2003-2] Cite error: The named reference ODelletal2003 was invoked but never defined (see the help page).

[ODelletal2002-3] Cite error: The named reference ODelletal2002 was invoked but never defined (see the help page).

[Chadwick-4] Cite error: The named reference Chadwick was invoked but never defined (see the help page).

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