NGC 5559 | |
---|---|
![]() NGC 5559 taken by
Hubble Space Telescope.
[1] | |
Observation data ( J2000 epoch) | |
Constellation | Boötes |
Right ascension | 14h 19m 12.792s [2] |
Declination | +24° 47′ 55.01″ [2] |
Redshift | 0.01717 [3] |
Heliocentric radial velocity | 5103 ± 3 km/s [3] |
Distance | 252.1 Mly (77.30 Mpc) [4] |
Apparent magnitude (B) | 14.81 [5] |
Characteristics | |
Type | SBb [6] |
Other designations | |
UGC 9166, MCG +04-34-017, PGC 51155 [3] |
NGC 5559 is a barred spiral galaxy, located 240 million light-years away in the constellation of Boötes. [1] It was discovered on April 10, 1785, by the astronomer William Herschel. [7]
In 2001, a type Ib supernova was detected within NGC 5559, and was subsequently designated SN 2001co. [8] [9] The supernova was a calcium-rich supernova, as it had strong spectral lines characteristic of calcium. The progenitors of these calcium-rich supernovae are still a mystery. [1]
NGC 5559 | |
---|---|
![]() NGC 5559 taken by
Hubble Space Telescope.
[1] | |
Observation data ( J2000 epoch) | |
Constellation | Boötes |
Right ascension | 14h 19m 12.792s [2] |
Declination | +24° 47′ 55.01″ [2] |
Redshift | 0.01717 [3] |
Heliocentric radial velocity | 5103 ± 3 km/s [3] |
Distance | 252.1 Mly (77.30 Mpc) [4] |
Apparent magnitude (B) | 14.81 [5] |
Characteristics | |
Type | SBb [6] |
Other designations | |
UGC 9166, MCG +04-34-017, PGC 51155 [3] |
NGC 5559 is a barred spiral galaxy, located 240 million light-years away in the constellation of Boötes. [1] It was discovered on April 10, 1785, by the astronomer William Herschel. [7]
In 2001, a type Ib supernova was detected within NGC 5559, and was subsequently designated SN 2001co. [8] [9] The supernova was a calcium-rich supernova, as it had strong spectral lines characteristic of calcium. The progenitors of these calcium-rich supernovae are still a mystery. [1]