Key facts
- Constellation
- Boötes
- Right ascension
- 14 19 12.792
- Declination
- +24 ° 47 ′ 55.01 ″
- Heliocentric radial velocity
- 5103 ± 3 km/s
- Distance
- 252.1 Mly (77.30 Mpc )
- Type
- SBb
via Wikipedia infobox
Wikidata facts
- Instance of
- spiral galaxy
- Constellation
- Boötes
- Distance from Earth
- 77.30
- Image
- NGC5559 - HST - Potw1736a.tif
Show 11 more facts
- catalog code
- [SLK2004] 984
- redshift
- 0.017232
- time of discovery or invention
- 1785-04-10
- discoverer or inventor
- William Herschel
- galaxy morphological type
- 3
- apparent magnitude
- 12.808
- radial velocity
- 5103
- Commons category
- NGC 5559
- right ascension
- 214.8033000
- declination
- 24.7986139
- epoch
- J2000.0
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 5559 is a barred spiral galaxy, located 240 million light-years away in the constellation of Boötes. It was discovered on April 10, 1785, by the astronomer William Herschel.
In 2001, a type Ib supernova was detected within NGC 5559, and was subsequently designated SN 2001co. However, in 2003, the supernova was identified as a calcium-rich supernova, as it had strong spectral lines characteristic of calcium. The progenitors of these calcium-rich supernovae are still a mystery.
Excerpted from Wikipedia’s “NGC 5559” article, available under the CC BY-SA 4.0 licence.
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