NGC 4559

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
NGC 4559 hst 09042 R814B450.png
NGC 4559 imaged by the Hubble Space Telescope
Credit: NASA.
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 35m 57.7s[1]
Declination+27° 57′ 35″[1]
Redshift816 ± 9 km/s[1]
Distance~ 29 Mly (8.859 Mpc)[1]
Apparent magnitude (V)10.4[1]
Apparent size (V)10′.7 × 4′.4[1]
Other designations
UGC 7766,[1] PGC 42002,[1] Caldwell 36

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.

In 2016, a luminous blue variable experienced a supernova-like outburst in NGC 4559, designated AT2016blu.

See alsoEdit



  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.

External linksEdit