IC 418

IC 418
Emission nebula
	Planetary nebula
Observation data: J2000 epoch
Right ascension	05h 27m 28.2037s[1]
Declination	−12° 41′ 50.265″[1]
Distance	3.6 ± 1.0 kly (1100 ± 300 pc)[2] ly
Apparent magnitude (V)	9.6[1]
Apparent dimensions (V)	3.5″x5.5"/11"x14"/150"/220"x250"[3]
Constellation	Lepus
Physical characteristics
Radius	0.15 ly
Absolute magnitude (V)	-
Notable features	-
Designations	Spirograph Nebula

IC 418, also known as Spirograph Nebula, is a planetary nebula located in the constellation of Lepus about 3,600 ly away.

The name derives from the intricate pattern of the nebula, which resembles a pattern which can be created using the Spirograph, a toy that produces geometric patterns (specifically, hypotrochoids and epitrochoids) on paper.

IC 418 lies about 3600 light-years away and spans 0.3 light-years across.

References

"IC 418". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-12-22.
Guzmán, Lizette; Loinard, Laurent; Gómez, Yolanda; Morisset, Christophe (2009). "Expansion Parallax of the Planetary Nebula IC 418". Paper on IC 418. 138: 46–49. arXiv:0905.0021. Bibcode:2009AJ....138...46G. doi:10.1088/0004-6256/138/1/46. S2CID 17714722.
Ramos-Larios, G.; et al. (2012). "Discovery of multiple shells around the planetary nebula IC 418". Monthly Notices of the Royal Astronomical Society. 423 (4): 3753–3760. arXiv:1204.5816. Bibcode:2012MNRAS.423.3753R. doi:10.1111/j.1365-2966.2012.21165.x. S2CID 118442646.

External links

Media related to IC 418 at Wikimedia Commons
The Spirograph Nebula (IC 418) - STScI Press Release
Astronomy Picture of the Day - IC 418: The Spirograph Nebula - 2010 April 11

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[simbad-1] "IC 418". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-12-22.

[ads-2] Guzmán, Lizette; Loinard, Laurent; Gómez, Yolanda; Morisset, Christophe (2009). "Expansion Parallax of the Planetary Nebula IC 418". Paper on IC 418. 138: 46–49. arXiv:0905.0021. Bibcode:2009AJ....138...46G. doi:10.1088/0004-6256/138/1/46. S2CID 17714722.

[3] Ramos-Larios, G.; et al. (2012). "Discovery of multiple shells around the planetary nebula IC 418". Monthly Notices of the Royal Astronomical Society. 423 (4): 3753–3760. arXiv:1204.5816. Bibcode:2012MNRAS.423.3753R. doi:10.1111/j.1365-2966.2012.21165.x. S2CID 118442646.