Antares Star Facts
Antares is a bright red supergiant star in the constellation of Scorpio.
- Antares is 550 light years from Earth and the brightest star in the constellation of Scorpius.
- Antares is a two star system consisting of the red supergiant Antares A and the much smaller but hotter Antares B.
- Antares B is ten times more massive than our sun and around 150 times brighter, but as a result of it being dwarfed by its massive parent star it cannot be viewed without the aid of a telescope.
- Antares is around 10,000 times brighter than the sun.
- Massive stars such as Antares burn their fuel extremely quickly, as a result they only exist for a few million years.
- At only around 12 million years old Antares is already nearing the end of its lifespan and is expected to explode as a supernova in the next million years.
- Low mass stars such as our sun exist in their main sequence for several billion years.
- Due to is reddish color Ancient Greeks associated the star with the planet Mars, the name Antares is Greek for "rival of Mars".
The sun is a mere dot in this image when compared in size to the giant Antares star.
Antares RadiusAntares has around 850 times the radius of the sun, if it was placed in the center of our solar system it would reach beyond the orbit of Mars.
Antares MassAntares is estimated to have a maximum mass of around 18 times greater than that of the sun.
Antares TemperatureAntares is estimated to have surface temperatures of around 3000C (5400F), around half as hot as the sun.
Antares Luminosity (energy emitted)Even though Antares is cooler than our sun its enormous size means it is around 60,000 times more luminous.
Antares StatisticsAlso Known As: Antares A, Alpha Scorpii
Distance From Earth: 550 light years
Star Type: M Class Supergiant
Mass: 18 x Sun
Luminosity: 65,000 x Sun
Diameter: 735 million miles (1.2 billion km) - 850 x Sun
Temperature: Approx 3,000C (5,400F)
Age: 12 million years old
Rotation Period: Unknown