Q64608
Sign in to saveglobular cluster in the constellation Dorado
Key facts
- Class
- VI
- Constellation
- Dorado
- Right ascension
- 05 02 11.180
- Declination
- −67 ° 59 ′ 05.89 ″
- Mass
- 7.6 × 10 M ☉
- Estimated age
- 1.60 ± 0.05 Gyr
- Other designations
- NGC 1806, KMHK 462, [SL63] 184
via Wikipedia infobox
Wikidata facts
- Image
- NGC 1806 HST.jpg
Show 6 more facts
- catalog code
- [SL63] 184
- Commons category
- NGC 1806
- time of discovery or invention
- 1836-12-30
- right ascension
- 75.546583
- declination
- -67.9849694
- apparent magnitude
- 7.342
Sources (1)
via Wikidata · CC0
~1 min read
Article
NGC 1806 is a globular cluster located within the Large Magellanic Cloud within the constellation of Dorado (the dolphin-fish), an area of the sky best seen from the Earth's southern hemisphere. It was discovered in 1836 by the British astronomer John Herschel. At an aperture of 50 arcseconds, its apparent V-band magnitude is 11.00, but at this wavelength, it has 0.05 magnitudes of interstellar extinction.
NGC 1806 is about 1.6 billion years old. Its estimated mass is 7.6×10 M☉, and its total luminosity is 1.42×10 L☉, leading to a mass-to-luminosity ratio of 0.54 M☉/L☉. All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass.