# IC 4444

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Galaxy in the constellation Lupus

IC 4444 IC 4441 imaged in infrared by 2MASS Observation data (J2000 epoch) Constellation Lupus Right ascension 14h 31m 38.666s[1] Declination −43° 25′ 06.05″[1] Redshift 0.006535 ± 0.000018 [1] Heliocentric radial velocity 1,959 ± 5 km/s[1] Distance 57.8 ± 19.7 Mly (17.7 ± 6.0 Mpc)[1] Apparent magnitude (V) 11.4[2] Characteristics Type (R')SA:(s)bc [1] Size ~40,000 ly (12.4 kpc) (estimated)[1] Apparent size (V) 1.7′ × 1.4′[1] Other designations IC 4444, ESO 272- G 014, AM 1428-431, MCG -07-30-002, IRAS 14284-4311, PGC 51905

**IC 4444** is a [spiral galaxy](/source/Spiral_galaxy) in the constellation [Lupus](/source/Lupus_(constellation)). The galaxy lies about 60 million [light years](/source/Light_years) away from Earth, which means, given its apparent dimensions, that IC 4444 is approximately 40,000 light years across.[1] It was discovered by [Lewis Swift](/source/Lewis_Swift) on 28 March 1897 and listed as IC 4441, however there is no object in the coordinates mentioned by Swift, and thus IC 4441 has been identified as the same object as nearby IC 4444, which was discovered by [DeLisle Stewart](/source/DeLisle_Stewart) in 1899.[3]

IC 4444 has a well-defined bar embedded in a small and faint [galactic bulge](/source/Galactic_bulge). There may be a complete inner ring. The spiral pattern is asymmetric, with at least three [spiral arms](/source/Spiral_arm), which emerge from the ends of the bar, two arms from the northwest end and one from the southeast. The southeast arms can be traced for a quarter of a revolution before fading. From the northwest end one arm is short and wraps tightly and features many [star formation knots](/source/HII_region) and the other is more loose and can be traced for a half revolution before fading. It features a region of [intense star formation](/source/Starburst_region).[4] The [star formation](/source/Star_formation) rate of the galaxy is estimated to be about 5.9 M☉ per year.[5]

One [supernova](/source/Supernova) has been observed in IC 4444, SN 2009G. It was discovered on 5 January 2009 at an apparent magnitude of 16.5 by the CHASE project using the 0.41-m 'PROMPT 4' telescope located at [Cerro Tololo Inter-American Observatory](/source/Cerro_Tololo_Inter-American_Observatory).[6] It was identified spectographically as a [type II-P supernova](/source/Type_II_supernova#Light_curves_for_Type_II-L_and_Type_II-P_supernovae) about three months past explosion.[7]

IC 4444 forms a pair with ESO 272-012 and lies in a galaxy cloud which also includes the galaxies [IC 4362](https://en.wikipedia.org/w/index.php?title=IC_4362&action=edit&redlink=1), [IC 4386](https://en.wikipedia.org/w/index.php?title=IC_4386&action=edit&redlink=1), [IC 4402](https://en.wikipedia.org/w/index.php?title=IC_4402&action=edit&redlink=1), and [NGC 5483](/source/NGC_5483).[8]

## References

1. ^ [***a***](#cite_ref-ned_1-0) [***b***](#cite_ref-ned_1-1) [***c***](#cite_ref-ned_1-2) [***d***](#cite_ref-ned_1-3) [***e***](#cite_ref-ned_1-4) [***f***](#cite_ref-ned_1-5) [***g***](#cite_ref-ned_1-6) [***h***](#cite_ref-ned_1-7) [***i***](#cite_ref-ned_1-8) ["NASA/IPAC Extragalactic Database"](http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=IC+4441). *Results for IC 4441*. Retrieved 2 February 2025.

1. **[^](#cite_ref-2)** ["Revised NGC Data for IC 4441"](https://spider.seds.org/ngc/revngcic.cgi?IC+4441). *spider.seds.org*. Retrieved 30 March 2024.

1. **[^](#cite_ref-Seligman_3-0)** Seligman, Courtney. ["IC 4441 (probably = IC 4444 = PGC 51905)"](https://cseligman.com/text/atlas/ic44.htm#ic4441). *Celestial Atlas*. Retrieved 19 November 2018.

1. **[^](#cite_ref-4)** Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". *The Astrophysical Journal Supplement Series*. **143** (1): 73–111. [arXiv](/source/ArXiv_(identifier)):[astro-ph/0206320](https://arxiv.org/abs/astro-ph/0206320). [Bibcode](/source/Bibcode_(identifier)):[2002ApJS..143...73E](https://ui.adsabs.harvard.edu/abs/2002ApJS..143...73E). [doi](/source/Doi_(identifier)):[10.1086/342340](https://doi.org/10.1086%2F342340).

1. **[^](#cite_ref-5)** Parkash, Vaishali; Brown, Michael J. I.; Jarrett, T. H.; Bonne, Nicolas J. (1 September 2018). ["Relationships between Hi Gas Mass, Stellar Mass, and the Star Formation Rate of HICAT+WISE (H i-WISE) Galaxies"](https://cdsarc.cds.unistra.fr/viz-bin/nph-Cat/txt?J/ApJ/864/40/table8.dat.gz). *The Astrophysical Journal*. **864** (1): 40. [arXiv](/source/ArXiv_(identifier)):[1807.06246](https://arxiv.org/abs/1807.06246). [Bibcode](/source/Bibcode_(identifier)):[2018ApJ...864...40P](https://ui.adsabs.harvard.edu/abs/2018ApJ...864...40P). [doi](/source/Doi_(identifier)):[10.3847/1538-4357/aad3b9](https://doi.org/10.3847%2F1538-4357%2Faad3b9).

1. **[^](#cite_ref-6)** Pignata, G.; Maza, J.; Hamuy, M.; Antezana, R.; Gonzalez, L.; Gonzalez, P.; Lopez, P.; Silva, S.; Folatelli, G.; Iturra, D.; Cartier, R.; Forster, F.; Marchi, S.; Conuel, B.; Reichart, D.; Ivarsen, K.; Crain, A.; Foster, D.; Nysewander, M.; Lacluyze, A. (1 January 2009). ["Supernova 2009G in IC 4441"](http://www.cbat.eps.harvard.edu/iau/cbet/001600/CBET001655.txt). *Central Bureau Electronic Telegrams* (1655): 1. [Bibcode](/source/Bibcode_(identifier)):[2009CBET.1655....1P](https://ui.adsabs.harvard.edu/abs/2009CBET.1655....1P).

1. **[^](#cite_ref-7)** Stritzinger, M.; Forster, F.; Folatelli, G.; Pignata, G.; Hamuy, M. (1 January 2009). ["Supernova 2009G in IC 4444"](http://www.cbat.eps.harvard.edu/iau/cbet/001600/CBET001664.txt). *Central Bureau Electronic Telegrams* (1664): 1. [Bibcode](/source/Bibcode_(identifier)):[2009CBET.1664....1S](https://ui.adsabs.harvard.edu/abs/2009CBET.1664....1S).

1. **[^](#cite_ref-Makarov_8-0)** Makarov, Dmitry; Karachentsev, Igor (21 April 2011). ["Galaxy groups and clouds in the local (z~ 0.01) Universe"](http://www.sao.ru/hq/dim/groups/galaxies.dat). *Monthly Notices of the Royal Astronomical Society*. **412** (4): 2498–2520. [arXiv](/source/ArXiv_(identifier)):[1011.6277](https://arxiv.org/abs/1011.6277). [Bibcode](/source/Bibcode_(identifier)):[2011MNRAS.412.2498M](https://ui.adsabs.harvard.edu/abs/2011MNRAS.412.2498M). [doi](/source/Doi_(identifier)):[10.1111/j.1365-2966.2010.18071.x](https://doi.org/10.1111%2Fj.1365-2966.2010.18071.x). [S2CID](/source/S2CID_(identifier)) [119194025](https://api.semanticscholar.org/CorpusID:119194025). Retrieved 1 February 2025.

## External links

- IC 4444 on [WikiSky](/source/WikiSky): [DSS2](http://www.wikisky.org/?object=IC+4444&img_source=DSS2), [SDSS](http://www.wikisky.org/?object=IC+4444&img_source=SDSS), [GALEX](http://www.wikisky.org/?object=IC+4444&img_source=GALEX), [IRAS](http://www.wikisky.org/?object=IC+4444&img_source=IRAS), [Hydrogen α](http://www.wikisky.org/?object=IC+4444&img_source=HALPHA), [X-Ray](http://www.wikisky.org/?object=IC+4444&img_source=RASS), [Astrophoto](http://www.wikisky.org/?object=IC+4444&img_source=IMG_all), [Sky Map](http://www.wikisky.org/?object=IC+4444), [Articles and images](http://www.wikisky.org/starview?object=IC+4444)

v t e Constellation of Lupus List of stars in Lupus Lupus in Chinese astronomy Stars Bayer α (Uridim) β γ δ ε ζ η θ ι κ λ μ ν1 ν2 ξ ο π ρ σ τ1 τ2 υ φ1 φ2 χ ψ1 ψ2 ω Flamsteed 1 (i) 2 (f) Variable RU EX GG GQ HR II IL IM KT (d) V407 V462 HR 5362 5364 5401 5651 (e) 5724 (k) 5825 (g) 5943 5967 HD 134004 135344 136164 141943 142527 143811 Other Gliese 588 HIP 70849 Lupus-TR-3 SSSPM J1549−3544 WASP-132 Exoplanets GQ Lupi b HIP 70849 b Lupus-TR-3b WASP-178b Star clusters NGC 5749 NGC 5822 NGC 5824 NGC 5927 NGC 5986 Nebulae IC 4406 NGC 5882 Galaxies IC 4444 NGC 5530 NGC 5643 Astronomical events SN 1006 Category

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