Apparent Magnitude of Sun at 8000 Parsecs from Galactic Center

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SUMMARY

The apparent magnitude of the Sun at a distance of 8000 parsecs from the Galactic Center, accounting for extinction, is calculated using the formula m = 20 mag + 5 * (log(8000) - 1). This calculation incorporates an extinction value of Av = 20 mag. However, the discussion highlights the need to also consider the Sun's apparent magnitude without extinction for a complete understanding of its visibility at that distance.

PREREQUISITES
  • Understanding of astronomical concepts such as apparent magnitude and absolute magnitude.
  • Familiarity with the luminosity-distance formula.
  • Basic knowledge of logarithmic calculations.
  • Awareness of extinction effects in astrophysics.
NEXT STEPS
  • Research the concept of absolute magnitude and its significance in astronomy.
  • Learn about the effects of extinction on astronomical observations.
  • Study the luminosity-distance relationship in cosmology.
  • Explore the calculation of apparent magnitudes for various celestial objects.
USEFUL FOR

Astronomy students, astrophysicists, and anyone interested in understanding the visibility of celestial objects in relation to distance and extinction effects.

Toad
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The extinction to our galactic center is about Av=20mag. What would be the apparent magnitude of our sun at the 8000parsec distance of the galactic center?

From what I know, I think I need to use http://en.wikipedia.org/wiki/Absolute_magnitude#Computation the luminosity-distance formula. So I'd have m=20mag+5*(log(8000)-1) . Is this correct, am I missing something, or am I going at this totally wrong?

Thanks!
 
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Toad said:
From what I know, I think I need to use http://en.wikipedia.org/wiki/Absolute_magnitude#Computation the luminosity-distance formula. So I'd have m=20mag+5*(log(8000)-1) . Is this correct, am I missing something, or am I going at this totally wrong?

Close, but not quite. What would the sun's apparent magnitude be at that distance if there were no extinction?
 

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