Babylon NG
Simply the best definition!

Download it's free

Absolute magnitude

Wikipedia English The Free Encyclopedia

Download this dictionary
Absolute magnitude
Absolute magnitude is the measure of intrinsic brightness of a celestial object. It is the hypothetical apparent magnitude of an object at a standard distance of exactly 10 parsecs (32.6 light years) from the observer, assuming no astronomical extinction of starlight. This places the objects on a common basis and allows the true energy output of astronomical objects to be compared without the distortion introduced by distance. As with all astronomical magnitudes, the absolute magnitude can be specified for different wavelength intervals; for stars the most commonly quoted absolute magnitude is the absolute visual magnitude, which uses only the visual (V) band of the spectrum (UBV system). Also commonly used is the absolute bolometric magnitude, which is the total luminosity expressed in magnitude units that takes into account energy radiated at all wavelengths, whether visible or not.

See more at Wikipedia.org...


© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License

WordNet 2.0 Dictionary

Download this dictionary
absolute magnitude

Noun
1. (astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth
(hypernym) magnitude
(classification) astronomy, uranology


ASTRONOMY UNBOUND Dictionary

Download this dictionary
Absolute magnitude
The apparent magnitude that a star would possess it if were placed at a distance of 10 parsecs from the Earth. In this way, absolute magnitude provides a direct comparison of the brightness of stars. The apparent magnitude of a star is based upon its luminosity and its distance. If all stars were placed at the same distance then their apparent magnitudes would only be dependent on their luminosities. Thus, absolute magnitudes are true indicators of the amount of light each star emits. The brightest star has magnitude -1.4; the Sun has an absolute magnitude of 4.8, which is actually quite faint; the faintest visible star has 6. See also magnitude.

English To Urdu Lughat

Download this dictionary
absolute magnitude
Eng: absolute magnitude
Urdu: قدر مُطلق کِسی سِتارے سے روشنی خارِج ہونے کی شرح ۔ ظاہِری تابندگی ۔ کِسی جَرم سَماوی کا وہ حُجَم یا جِسامَت جو مُعیَّنَہ معیاری فاصلے ( ۱۰ پارسَک یا ثانیہ مَنظَر ) سے دِکھائی دے ۔
  



| Absolute magnitude in French | Absolute magnitude in Spanish | Absolute magnitude in Dutch | Absolute magnitude in Portuguese | Absolute magnitude in German | Absolute magnitude in Russian | Absolute magnitude in Japanese | Absolute magnitude in Greek | Absolute magnitude in Korean | Absolute magnitude in Turkish | Absolute magnitude in Hebrew | Absolute magnitude in Arabic | Absolute magnitude in Thai | Absolute magnitude in Polish | Absolute magnitude in Hungarian | Absolute magnitude in Czech | Absolute magnitude in Lithuanian | Absolute magnitude in Latvian | Absolute magnitude in Catalan | Absolute magnitude in Urdu | Absolute magnitude in Bulgarian | Absolute magnitude in Romanian | Absolute magnitude in Swedish | Absolute magnitude in Farsi | Absolute magnitude in Hindi