C36 · galaxy

NGC 4559

NGC 4559 is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices.

RA12h 35m 57sDec+27° 57' 35"

Image: KPNO/NOIRLab/NSF/AURA/Jeff Hapeman/Adam Block. CC BY 4.0, via Wikimedia Commons.

Identity & coordinates

Identification

Primary designation: C36
All designations: C36 · NGC 4559
Object type: Galaxy
Constellation: Coma Berenices
Best viewing: Spring

Coordinates & physical

Right ascension (J2000): 12h 35m 57s
Declination (J2000): +27° 57' 35"
Apparent magnitude (V): —
Distance: —
Redshift (z): 0.002715

III

Visibility tonight

The science

NGC 4559 is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices. Its velocity with respect to the cosmic microwave background is 1,096±20 km/s, which corresponds to a Hubble distance of 52.7 ± 3.8 Mly (16.17 ± 1.17 Mpc). However, 26 non-redshift measurements give a much closer distance of 24.56 ± 1.58 Mly (7.530 ± 0.483 Mpc). It was discovered by German-British astronomer William Herschel on 11 April 1785.

Summary adapted from Wikipedia · CC-BY-SA-4.0