NGC 4559

NGC 4559
NGC 4559
	NGC 4559 imaged by the Sloan Digital Sky Survey
Observation data (J2000 epoch)
Constellation	Coma Berenices
Right ascension	12h 35m 57.7s
Declination	+27° 57′ 35″
Redshift	816 ± 9 km/s
Distance	~ 29 Mly (8.859 Mpc)
Apparent magnitude (V)	10.4
Characteristics
Type	SAB(rs)cd
Apparent size (V)	10.7′ × 4.4′
Other designations
	UGC 7766, PGC 42002, Caldwell 36

NGC 4559 (also known as Caldwell 36) is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices. Distance estimates for NGC 4559 range from about 28 million light-years to 31 million light-years, averaging about 29 million light-years.^[1]

NGC 4559 is a member of the Coma I Group.^[2]^[3]

Two supernovae have been recorded in NGC 4559, A Type II-L supernova in 1941 (SN 1941A) and an unclassified supernova event in 2019.

The luminous blue variable AT2016blu in NGC 4559 experiences repeated supernova-like outbursts. First observed in January 2012, it burst out again in 2014, 2016, 2017, 2018, 2019, 2020 and 2021.^[4]

Gallery[edit]

Hubble Space Telescope showing the inner structure

References[edit]

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j "NASA/IPAC Extragalactic Database". Results for NGC 4559. Retrieved 2020-12-21.
^ Sandage, A.; Tammann, G.A. (1975). "Steps toward the Hubble constant. V - The Hubble constant from nearby galaxies and the regularity of the local velocity field". The Astrophysical Journal. 196: 313–328. Bibcode:1975ApJ...196..313S. doi:10.1086/153413. ISSN 0004-637X.
^ Gregory, S.A.; Thompson, L. A. (1977). "The Coma I Galaxy Cloud". The Astrophysical Journal. 213: 345–350. Bibcode:1977ApJ...213..345G. doi:10.1086/155160. ISSN 0004-637X.
^ David Bishop (6 July 2021). "LBV 2016blu in NGC 4559". rochesterastronomy.org. Retrieved 9 August 2021.

External links[edit]

Media related to NGC 4559 at Wikimedia Commons
NGC 4559 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

[ned-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j "NASA/IPAC Extragalactic Database". Results for NGC 4559. Retrieved 2020-12-21.

[2] Sandage, A.; Tammann, G.A. (1975). "Steps toward the Hubble constant. V - The Hubble constant from nearby galaxies and the regularity of the local velocity field". The Astrophysical Journal. 196: 313–328. Bibcode:1975ApJ...196..313S. doi:10.1086/153413. ISSN 0004-637X.

[3] Gregory, S.A.; Thompson, L. A. (1977). "The Coma I Galaxy Cloud". The Astrophysical Journal. 213: 345–350. Bibcode:1977ApJ...213..345G. doi:10.1086/155160. ISSN 0004-637X.

[4] David Bishop (6 July 2021). "LBV 2016blu in NGC 4559". rochesterastronomy.org. Retrieved 9 August 2021.

[1]

[2]

[3]

[4]

v t e Caldwell catalogue
List	C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80 C81 C82 C83 C84 C85 C86 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109
See also	Messier Catalogue Catalogue of Nebulae and Clusters of Stars New General Catalogue Index Catalogue Revised New General Catalogue Herschel 400 Catalogue
Category Commons Portal

See also[edit]

Gallery[edit]

References[edit]

External links[edit]