NGC 5555 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Virgo |
Right ascension | 14h 18m 48.0s |
Declination | −19° 08′ 20.1″ |
Redshift | 0.036515 ± 0.000033 |
Heliocentric radial velocity | 10,947 ± 10 km/s |
Distance | 539 Mly (165.20 ± 11.57 Mpc) |
Apparent magnitude (V) | 14.5 |
Apparent magnitude (B) | 15.3 |
Surface brightness | 13.51 |
Characteristics | |
Type | Sb |
Size | Approximately 143,000 ly (43.92 kpc) |
Apparent size (V) | 1.0' x 0.4' |
Other designations | |
PGC 51124, ESO 579-15, MCG -03-36-011, IRAS 14160-1854 |
NGC 5555 is a distant spiral galaxy located in the constellation Virgo. Its velocity in respect to the cosmic microwave background is 11,200 ± 20 km/s, corresponding to a Hubble Distance of 165 ± 12 Mpc (~538 million light-years).[1] It was discovered by Ormond Stone in 1886 who described it as "very faint, small, irregularly round with a bright middle nucleus."[2]
The galaxy morphology of NGC 5555 is Sb,[3][4][5] and it is known to contain regions of ionized hydrogen.[1]
To date, three non-redshift measurements give NGC 5555 a distance of 151,000 ± 6.245 megaparsecs (~493 million light-years), which is just within Hubble distance values.[6]