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A size comparison between R136a1 and the Sun. R136a1 is over forty times the radius of the Sun (42.7 R ☉; 29,700,000 km; 1 ⁄ 7 au) which corresponds to a volume nearly 80,000 times larger than the Sun. [4] R136a1 does not have a well-defined visible surface like the Earth or the Sun.
UY Scuti (BD-12°5055) is a red supergiant star, located 5,900 light-years away in the constellation Scutum. It is also a pulsating variable star , with a maximum brightness of magnitude 8.29 and a minimum of magnitude 10.56, which is too dim for naked-eye visibility.
R136 (formerly known as RMC 136 from the Radcliffe Observatory Magellanic Clouds catalogue [4]) is the central concentration of stars in the NGC 2070 star cluster, which lies at the centre of the Tarantula Nebula in the Large Magellanic Cloud.
Beta Scuti is the second brightest at magnitude 4.22, followed by Delta Scuti at magnitude 4.72. It is also known as 6 Aquilae. [7] Beta Scuti is a binary system, [8] [9] with the primary with a spectral type similar to the Sun, although it is 1,270 times brighter. Delta Scuti is a bluish white giant star, which is now coming at the direction ...
If this object were 10 parsecs away from Earth it would appear nearly as bright in the sky as the Sun (apparent magnitude −26.744). This quasar's luminosity is, therefore, about 2 trillion (10 12) times that of the Sun, or about 100 times that of the total light of average large galaxies like our Milky Way. (Note that quasars often vary ...
The fusion rate is so great that in 10 seconds R136a2 produces more energy than the Sun does in a year. It may have been a 221 M ☉ star at the time it was born and lost as much as 24 M ☉ in the past 1 to 2 million years, [ 4 ] but since current theories suggest that no stars can be born above 150 M ☉ it may be a merger of two or more stars.
An extreme oxygen-rich red hypergiant that has experienced two dimming periods in the 20th century where the star became dimmer by up to 2.5 magnitudes. [16] Potentially the largest known star. [14] There is a possilbility that this size might be a bit overestimated (on the order of 1 sigma). Hence, the quoted radius might be just an upper ...
The mass is equally uncertain, thought to have been up to 200 times the Sun when initially formed but now considerably less due to extreme mass loss although likely still over 100 times the Sun. [10] Modelling the star itself to match its spectrum gives a mass of 27.5 M ☉, [7] while matching its current properties to an evolutionary model ...