Sigma Sagittarii “Nunki”

Sigma Sagittarii

“Nunki”

This sun-like star is the second brightest star in the constellation Sagittarius. It’s modern name, Nunki, is a Babylonian or Assyrian name uncovered by archaeologists.

Star: Sigma Sagittarii; "Nunki"

Chemical Components: Like the Sun, Nunki is a "normal" unevolved star which shines by the fusion of hydrogen into helium in its deep core. Mostly hydrogen, then helium. No metallicity recorded.

Location: 5.2 arcminutes away

Right ascension: 20h 22m 27.5s

Declination: -42° 2 59"

Spectrum analysis of most abundant chemical: hydrogen

http://www.umop.net/spctelem.htm 

Stellar Classification: B2.5 V; B-type main sequence star

 http://deepsky.astroinfo.org/Sgr/

http://deepsky.astroinfo.org/Sgr/

100,000 Stars. (n.d.). Retrieved September 20, 2015, from http://stars.chromeexperiments.com/

Sagittarius. (n.d.). Retrieved September 20, 2015, from http://www.topastronomer.com/StarCharts/Constellations/Sagittarius.php