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Alpha Centauri ... the brightest star in the constellation "Centaurus" ... has a visual magnitude of 0.00. Alpha Centauri is a triple star ... a binary yellow dwarf (G2V) circled by an orange dwarf (K1V), with a much smaller red dwarf (M5.5Ve) orbiting the pair at a greater distance. The stars are not visually resolvable, and the visual magnitude of 0.00 includes the light from all three components. The faintest of Alpha Centauri's three stars, Proxima, is the star closest to the sun, at about 4.2 light-years. Proxima's apparent magnitude is about 11 (very much too faint to see with the naked eye, even if A and B weren't almost right on top of it from our viewpoint), and its absolute magnitude is an even more dismal 15.5.
What else can I help you with?
Is Proxima Centauri a yellow star?
No, Proxima Centauri is not a yellow star. It is a red dwarf star, which means it has a cooler temperature and emits most of its light in the red and infrared spectrum.
What is the second closet star to earth?
The closest star to earth is the sun. After that the closes is Proxima Centauri.
What is the name of closest star not in your solar system?
The closest star to our solar system is Proxima Centauri, which is located about 4.24 light-years away in the Alpha Centauri star system.
If a star is closer to earth is it brighter?
Distance is one of three factors affecting the "apparent" magnitude of a star. The other two are "absolute magnitude", or how bright it REALLY is, and the amount of dust and gas between the other star and our solar system. For example, the closest star to Earth (other than our Sun, of course) is Proxima Centauri, 4.2 light years away. Proxima Centauri is NOT VISIBLE to the naked eye; it is a tiny red dwarf, so dim that you need a telescope to see it.
What part of a star is called magnitude?
Magnitude refers to the brightness of a star. There are two main types: apparent magnitude, which is how bright a star appears from Earth, and absolute magnitude, which measures a star's intrinsic brightness.
What is the apparent magnitude of proxima centauri star?
11.05
What is the scientific notation of Proxima Centauri?
Proxima Centauri is a star and there is no scientific notation for a star. There will be scientific notations for the values of its distance, its size, its age, luminosity, magnitude and so on but the question is not about any of them!
Can you see proxima centauri?
Not without a telescope. Proxima Centauri is a dim star.
How bright is proxima centauri?
Proxima Centauri is about 0.005% as bright as the sun. In other words the sun is about 20,000 times brighter than Proxima Centauri.
Which star is the closest distance to the Sun?
Proxima Centauri is the closest star to our sun at 4.24 light years away. It is a red dwarf about one-seventh the diameter of our sun. From there, the Sun is a bright 0.4 magnitude star in the constellation Cassiopeia. However, the sun is not the closest star to Proxima Centauri. The closest stars from there are Alpha Centauri A and B.
Which star is hotter the sun or proxima centauri?
Proxima Centauri is a red dwarf, a common type of star but very dim despite its closeness, and less hot than the Sun at its surface. It is only 4.24 light-years away but only a magnitude 11 star, so a hundred times dimmer than the faintest that can be seen by eye. It is 0.237 light years from Alpha Centauri from where it would be seen as a 5.5 magnitude star, so only just visible.
How far away is the alpha proxima star?
There is no star called "Alpha Proxima". "Alpha" is part of the name of the "main" star (usually the brightest star) in each constellation.Perhaps you refer to Proxima Centauri. That's about 4.3 light-years away.
What are biotic factors for Proxima Centauri?
Proxima Centauri is a star. It has no life forms.
Is Proxima Centauri a yellow star?
No, Proxima Centauri is not a yellow star. It is a red dwarf star, which means it has a cooler temperature and emits most of its light in the red and infrared spectrum.
How far is proxima centauri from your galaxy?
As the closest star to our sun, Proxima Centauri is in our galaxy.
Is the star proxima centauri a white star?
No. It's a red dwarf star.
When a star is closer to earth will it be bright?
Relative brightness (or "visual magnitude", to use the proper term) depends both on distance and on size. It's worth remembering that the CLOSEST star to our solar system is the invisibly dim Proxima Centauri.
