IRAS 17163-3907

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Star
IRAS 17163-3907
Fried Egg Nebula.jpg
Infrared recording of the wavelengths 8.59 µm (blue), 11.85 µm (green) and 12.81 µm (red) from IRAS 17163-3907 with fog by the Very Large Telescope
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Scorpio
Right ascension 17 h 19 m 49.33 s
declination -39 ° 10 ′ 37.9 ″
Apparent brightness 13.1 mag
Typing
Spectral class G
Astrometry
distance 13,000  ly
Physical Properties
Other names
and catalog entries
2MASS catalog 2MASS J17194933-3910374 [1]
Other names NSV 21444, GSC 07870-01348, IRSV 1716-3907, UCAC2 15112979, DENIS-P J171949.3-391037, Hen 3-1379, [NHO98] 17163-3907, GSC2 S2300121509, MSX6C G348.5107-01.1199

IRAS 17163-3907 is a star that belongs to the star class of yellow hypergiants . It is 13,000 light years from Earth and is in the constellation Scorpio . The giant is about 1,000 times the diameter of our sun and exceeds its luminosity by 500,000 times. Its outer shell has a radius of about 10,000 astronomical units, which is 10,000 times the mean distance of the earth from the sun.
Around IRAS 17163-3907 lies a cloud of dust that absorbs a large part of the emitted light in the visible light range; in the infrared range, it gives it an appearance similar to that of fried ice, which it is also known as.

Yellow giants are extremely rare stars that do not have the required mass to become what is known as a luminous blue variable star .

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