Table of Contents
- 1 How bright will Antares supernova be?
- 2 What happens when Antares go supernova?
- 3 What would happen to Earth if a nearby star went supernova?
- 4 Is Antares a planet?
- 5 Will Antares become a black hole?
- 6 Why is Antares so bright?
- 7 How long does it take for Antares to explode?
- 8 How many light years away is Antares from Earth?
How bright will Antares supernova be?
The diameter of Antares can be measured most accurately using interferometry or observing lunar occultations events. An apparent diameter from occultations 41.3 ± 0.1 milliarcseconds has been published. For a few months, the Antares supernova could be as bright as the full moon and be visible in daytime.
What happens when Antares go supernova?
Antares, prominent on summer nights (Northern Hemisphere, that is; Down Under, winter has just begun), is likewise bright and red. As a supergiant, Antares is considered close to its end. When it has used up its hydrogen fuel, it will collapse and explode as a supernova (sometime in the next 10,000 years).
How bright is Antares?
1.09
Antares/Magnitude
What would happen to Earth if a nearby star went supernova?
The closest known candidate is IK Pegasi. It is currently estimated, however, that by the time it could become a threat, its velocity in relation to the Solar System would have carried IK Pegasi to a safe distance….Risk by supernova type.
Star designation | Distance (pc) | Mass ( M ☉) |
---|---|---|
Betelgeuse | 197 | 7.7–20 |
Rigel | 264 | 18 |
Is Antares a planet?
Antares is a two-star system consisting of Antares A – the red supergiant, and Antares B – a much smaller yet hotter blue-white main-sequence star of magnitude 5.5, spectral type B2. Planets can also occult Antares, though, with the exception of Venus, this hasn’t happened for millennia.
Is Antares brighter than the sun?
Antares is about 550 light-years away from the Sun being the brightest star in the constellation of Scorpius. It is about 10.000 times brighter than the sun with a luminosity of about 60.000 times greater.
Will Antares become a black hole?
Antares is a binary system. The primary star that can be seen with your unaided eye is the red supergiant; its companion — Antares B — is a smaller main-sequence B-type star of 5th magnitude. Antares will implode, then re-explode with the phenomenal force of a supernova, leaving behind a neutron star or black hole.
Why is Antares so bright?
So Antares is relatively cool, and its surface temperature is relatively low. Yet the star appears very bright to us. That’s because Antares is a truly enormous star. Its surface area – the surface from which light can escape this star – is gigantic.
How bright will Antares appear to Earth when it goes supernova?
How bright will Antares appear to earth when it goes supernova? The average peak absolute magnitude of a core-collapse supernova (which is what Antares will eventually be) is -16 or -17. Let’s just use -16.5 to find a happy medium for this calculation.
How long does it take for Antares to explode?
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.
How many light years away is Antares from Earth?
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.
Where is Antares located in the night sky?
Locating Antares. Antares, also called alpha Scorpii, is a prominent star in Scorpius (the Scorpion), a constellation that is visible in the southern night sky of most locations in the Northern Hemisphere.