8th grade science

posted by .

the question is:

"The absolute magnitude of a star is -12.. How would you describe its brightness?"

  • 8th grade science -

    Its brightness (or apparent magnitude) will also depend upon how far away it is. If it is 10 parsecs (3 light years) away, it will be about as bright as a full moon as seen from Earth. The star's absolute magnitude is 14.7 magnitudes brighter than the sun. That is about million times brighter, when seen from the same distance.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Science

    If one star is at a distance of 100 light years, how far away would a second star that is 9 times as luminous, have to be to appear at the same brightness as the first?
  2. pre-calc

    How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: m_2 - m_1 = log (b_1/b_2) Here, M refers to a star's …
  3. Advanced Functions

    How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: M2-M1 = log (b1 / b2) Here, M refers to a star's …
  4. Math

    How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: M2-M1 = log (b1 / b2) Here, M refers to a star's …
  5. PreCalculus

    A variable star is one whose brightness alternately increases and decreases. For the variable star Delta Cephei, the time between periods of maximum brightness varies by +/- 3.5 magnitude. (a)Find a function that models the brightness …
  6. Math

    A variable star is one whose brightness alternately increases and decreases. For one such star, the time between periods of maximum brightness is 5.6 days, the average brightness (or magnitude) of the star is 5.5, and its brightness …
  7. Calculus 1

    A variable star is one whose brightness alternately increases and decreases. For one such star, the time between periods of maximum brightness is 4.7 days, the average brightness (or magnitude) of the star is 5.3, and its brightness …
  8. Science please help :)?

    3. which if the following factors determines how long a star will live ?
  9. Adv. Func./Science Question

    Hi, I have this question that I will be tested on but my teacher didn't teach us how to do it so I am confused on how to even start. Please explain on how to start the question...thank you How bright a star appears can depend on how …
  10. Math

    A variable star is one whose brightness alternately increases and decreases. Lists of variable stars can be found online, and many occur in familiar constellations visible with the naked eye. One such star, R Hydrae, has an average …

More Similar Questions