• Source: NGC 772

NGC 772 (also known as Arp 78 or the Fiddlehead Galaxy) is an unbarred spiral galaxy approximately 106 million light-years away in the constellation Aries. It was discovered on 29 November 1785 by German-British astronomer William Herschel.




Characteristics


At around 200,000 light years in diameter, NGC 772 is somewhat larger than the Milky Way Galaxy, and is surrounded by several satellite galaxies – including the dwarf elliptical, NGC 770 – whose tidal forces on the larger galaxy have likely caused the emergence of a single elongated outer spiral arm that is much more developed and stronger than the others arms. Halton Arp includes NGC 772 in his Atlas of Peculiar Galaxies as Arp 78, where it is described as a "Spiral galaxy with a small high-surface brightness companion".
Three supernovae have been observed in NGC 772. SN 2003hl (Type II, mag. 16.5) was discovered on 20 August 2003. SN 2003iq (Type II, mag. 16.4) was discovered on 8 October 2003. SN 2022qze (type IIP, mag. 19.9) was discovered on 8 August 2022.
NGC 772 probably has a H II nucleus, but it may be a transitional object.




Gallery



















See also


NGC 1097
Whirlpool Galaxy




References






External links



Spiral Galaxy NGC 772; Elliptical Galaxy NGC 770

NGC 772 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
NGC 772 (Arp 78) at Constellation Guide

Kata Kunci Pencarian:

• NGC 1277
• Daftar objek NGC 1 - 1000
• Sistem klasifikasi Hubble
• Daftar galaksi spiral
• Galaksi
• 96 (angka)
• Daftar eksoplanet
• NGC 772
• Aries (constellation)
• Hubble sequence
• 6223 Dahl
• NGC 770
• List of spiral galaxies
• List of NGC objects (1–1000)
• NGC 520
• NGC 1961
• Southern Supercluster Strand