IC 418

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

IC 418, also known as Spirograph Nebula, is a planetary nebula located in the constellation of Lepus about 3,600 ly away. It spans 0.3 light-years across.

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.

The central star of the planetary nebula is an O-type star with a spectral type of O7fp.^[4]

References[]

^ ^a ^b ^c "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". The Astronomical Journal. 138 (1): 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.
^ González-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics. 656: A51. arXiv:2109.12114. Bibcode:2021A&A...656A..51G. doi:10.1051/0004-6361/202141916. S2CID 237940344.

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

This nebula-related article is a stub. You can help Wikipedia by .

[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". The Astronomical Journal. 138 (1): 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.

[4] González-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics. 656: A51. arXiv:2109.12114. Bibcode:2021A&A...656A..51G. doi:10.1051/0004-6361/202141916. S2CID 237940344.

[1]

[2]

[3]

[4]