Table of Contents
What is the absolute magnitude of Altair?
0.77
Altair/Magnitude
What is Deneb’s mass?
3.779 × 10^31 kg (19 M☉)
Deneb/Mass
Is Deneb high mass?
As a blue-white supergiant (spectral type A2Ia), Deneb’s high mass (20 solar masses) and temperature (8,400° Kelvin) mean that the star will have a short lifespan and will probably go supernova within a few million years.
What is Betelgeuse fusing?
Because Betelgeuse – only about 700 light-years away, in the constellation of Orion – is one of the brightest stars in the sky. The ancient star’s main-sequence days of fusing hydrogen in its core are done; it ran out of hydrogen some time ago, and is now fusing helium into carbon and oxygen.
What is the luminosity of Deneb?
196,000 L☉
Deneb/Luminosity
A blue-white supergiant, Deneb rivals Rigel as the most luminous first-magnitude star. However, its distance, and hence luminosity, is poorly known; its luminosity is somewhere between 55,000 and 196,000 times that of the Sun.
Which magnitude star is brightest?
1st magnitude
According to this ancient scale, the brightest stars in our sky are 1st magnitude, and the very dimmest stars to the eye alone are 6th magnitude. A 2nd-magnitude star is still modesty bright but fainter than a 1st-magnitude star, and a 5th-magnitude star is still pretty faint but brighter than a 6th-magnitude star.
What is the magnitude of the star Deneb?
With an apparent magnitude of 1.25v, Deneb is the 19th brightest star in the entire sky (see: 50 Brightest Stars ). Its absolute magnitude is -8.73 and its distance is 3230 light years.
What is the surface temperature of Deneb?
The star has a surface temperature of 8,500 K. Deneb is the 19th brightest star in the sky and the easiest of the three vertices of the Summer Triangle to locate because it is part of the Northern Cross.
What is the brightness of a Deneb variable?
Deneb’s brightness fluctuates between magnitudes 1.21 and 1.29. Similar small-scale rapid fluctuations have been observed in many early supergiants. They were officially grouped into a class, the Alpha Cygni (ACYG) variables, in 1985 in the fourth edition of the General Catalogue of Variable Stars.
How many light years away is Deneb from Earth?
Deneb is a Binary or Multiple star system. Using the most recent figures given by the 2007 Hipparcos data, the star is 1411.96 light years away from Earth. The star’s name is a traditional/name which has been officially recognised by the I.A.U.