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Because Rigel is much farther away. Rigel is 770 light-years away, and Sirius is only 8.6 light-years away.

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Which star has the less absolute magnitude rigel or Sirius?

Sirius has a lower absolute magnitude than Rigel. Sirius is one of the brightest stars in the sky with an absolute magnitude of 1.42, while Rigel has an absolute magnitude of -8.1, making it much brighter than Sirius.


What star has a greater magnitude a Rigel or Sirius?

Sirius, which means that Rigel is brighter.


Which star is bigger sirius or rigel?

Rigel is approximately ten times LARGER than Sirius


Which is brighter Sirius or Rigel?

Well, honey, Sirius takes the crown for being the brightest star in the night sky, shining like a diamond in the rough. Rigel may be a hotshot in its own right, but it can't outshine the sass and sparkle of Sirius. So, if you're looking for some celestial bling, Sirius is the way to go.


Does Rigel have greater apparent magnitude than Sirius?

No, which means that Rigel appears brighter.


What is the bright bluish star?

Without knowing direction of even hemisphere, it's difficult to be precise. A best guess would be Sirius or Rigel.


Are the largest star the brightest?

No because they might just be bright because they are close, like Sirius and Procyon, or they might be bright because they are really are huge stars a long way way, like Rigel and Deneb.


Does rigel have a greater magnitude than sirus?

Yes, Rigel has a greater magnitude than Sirius. Rigel has an apparent magnitude of around 0.12, making it one of the brightest stars in the night sky, while Sirius has an apparent magnitude of about -1.46, making it the brightest star in the night sky.


Even though this star has an absolute magnitude greater then that of sirius it looks dimmer from earth since it's 100 times farther away?

Yes, the star with the higher absolute magnitude will appear dimmer from Earth if it is located farther away. This is because brightness decreases with distance due to the inverse square law of light, meaning that a star will appear dimmer the farther it is from the observer.


What are 5 stars in our galaxy?

Sirius, polaris, cygnus, betelgeuse, & rigel


Rigel aldebaran Sirius Antares KY cygni betelgeuse pollux arrange in ascending order?

In terms of size from smallest to largest, its Sirius, Pollux, Aldebaran, Rigel, Betelgeuse, Antares, and KY Cygni.


Give the name of four stars in your galaxy?

Sirius, Rigel, Pollux and Castor