Table of Contents
- 1 What star has the greatest apparent magnitude?
- 2 Which object has the greatest apparent magnitude in the sky?
- 3 What is the apparent magnitude of Sirius B?
- 4 What is the brightest star in the northern hemisphere?
- 5 How two stars would have the same apparent magnitude but different absolute magnitudes?
- 6 When comparing two stars How is it that one star can have a higher apparent magnitude but a lower absolute magnitude?
What star has the greatest apparent magnitude?
ABSOLUTE AND APPARENT MAGNITUDE
| Rank | Star | Apparent Magnitude |
|---|---|---|
| . | The Sun | -26.72 |
| 1 | Sirius (in Canis Major) | -1.46 |
| 2 | Canopus (in Carina) | -0.72 |
| 3 | Rigel Kentaurus (Alpha Centauri) (in Centaurus) | -0.27 |
Which object has the greatest apparent magnitude in the sky?
So for example, the apparent magnitude of the Sun is -26.7 and is the brightest celestial object we can see from Earth.
What is the name of the star at night that has the highest apparent magnitude?
Sirius A
1. Sirius A (Alpha Canis Majoris) Located in the constellation Canis Major with an apparent magnitude of -1.5 and 8 light years away from Earth. Visible from the whole planet.
What does it mean when two stars have the same apparent magnitude?
The smaller the distance between the observer and object, the greater the apparent brightness. (left) Two stars, A and B, with the same apparent magnitude. Two objects that have the same apparent magnitude, as seen from the Earth, may either be: At the same distance from the Earth, with the same luminosity.
What is the apparent magnitude of Sirius B?
-1.46
Sirius/Magnitude
What is the brightest star in the northern hemisphere?
Sirius
Sirius is highly visible in the Northern Hemisphere’s winter night sky, because the star has a high luminosity, or intrinsic brightness, relativeto other stars, and because it’s relatively close to Earth (8.6 light-years away). According to NASA, Sirius has a mass that’s two times that of Earth’s sun.
What star has the lowest apparent magnitude?
List of apparent magnitudes
| Apparent magnitude (V) | Object | Seen from… |
|---|---|---|
| −30.30 | star Sirius A | seen from 1 AU away |
| −29.30 | star Sun | seen from Mercury at perihelion |
| −27.40 | star Sun | seen from Venus at perihelion |
| −26.74 | star Sun | seen from Earth |
What planet has the brightest apparent magnitude?
He assigned an apparent magnitude of 1 to the brightest stars in the sky, and he gave the dimmest stars he could see an apparent magnitude of 6….Apparent magnitude.
| Apparent Magnitude | Celestial Object |
|---|---|
| -4.4 | Venus (at brightest) |
| -3.0 | Mars (at brightest) |
| -1.6 | Sirius (brightest star) |
| +3.0 | Naked eye limit in an urban neighborhood |
How two stars would have the same apparent magnitude but different absolute magnitudes?
Infer how two stars could have the same apparent magnitude but different absolute magnitudes. Two stars could look like they had the same brightness from Earth, but really they could be different distances apart and actually have a different brightness.
When comparing two stars How is it that one star can have a higher apparent magnitude but a lower absolute magnitude?
Remember that the magnitude system is “backwards,” in that lower numbers mean brighter stars. Therefore, in the case where the star is closer than 10 parsecs, the apparent magnitude will be a lower number (brighter) than the absolute magnitude, and m – M will be a negative number.