NGC 4535

NGC 4535 is a barred spiral galaxy located some 54^[3] million light years from Earth in the constellation Virgo. It is a member of the Virgo Cluster of galaxies and is located 4.3° from Messier 87. The galactic plane of NGC 4535 is inclined by an angle of 43° to the line of sight from the Earth.^[4] The morphological classification of NGC 4535 in the De Vaucouleurs system is SAB(s)c,^[5] which indicates a bar structure across the core (SAB), no ring (s), and loosely wound spiral arms (c). The inner part of the galaxy has two spiral arms, which branch into multiple arms further away. The small^[6] nucleus is of type HII, meaning the spectrum resembles that of an H II region.^[5]

NGC 4535
NGC 4535 imaged with the Very Large Telescope at the Paranal Observatory in Chile
Observation data (J2000 epoch)
Constellation	Virgo
Right ascension	12h 34m 20.310s[1]
Declination	+08° 11′ 51.94″[1]
Redshift	0.006551
Heliocentric radial velocity	+1,962[2] km/s
Distance	54.14 ± 1.76 Mly (16.60 ± 0.54 Mpc)[3]
Group or cluster	Virgo Cluster
Apparent magnitude (B)	10.73[4]
Absolute magnitude (V)	–21.42 ± 0.09[3]
Characteristics
Type	SAB(s)c[5]
Size	117,000 ly
Apparent size (V)	11′.8 × 11′.0[6]
Other designations
CGCG 42-159, IRAS 12318+0828, MCG 1-32-104, PGC 41812, UGC 7727, VCC 1555

During 1999, the Hubble Space Telescope was used to observe Cepheid variable stars in NGC 4535. The period-luminosity relationship for these objects yielded a distance modulus of 31.02 ± 0.26 magnitude. This corresponded to a physical distance estimate of 52.2 ± 6.2 Mly (16.0 ± 1.9) Mpc, which was consistent with distance estimates for other members of the Virgo Cluster.^[7]