The absolute magnitude is the magnitude the stars would have if viewed from a distance of 10 parsecs or some 32.6 light years. When a giant star dies, it … The Large Magellanic Cloud is a nearby dwarf galaxy which orbits the Milky Way. The apparent magnitude of the Sun is −26.74 (brighter), and the mean magnitude of the … Again, the lower or more negative the value of M, the brighter the star is. Obviously, Deneb is intrinsically very bright to make this list from its greater distance. The star is in the R136 star cluster, which is located in the Large Magellanic Cloud. A Greek astronomer named Hipparchus made an apparent magnitude scale that ranged from 1 to 6, with the brightest stars being in category 1. R136a1 isn't 4.8, like our Sun, it is -12.6, which means it is 8.7 million times brighter than our Sun. Let's take the absolute magnitude of R136a1 = −8.09 and so some top of the head non-maths estimations: An absolute magnitude is how bright the object would appear at 10 parsecs away which makes it as not quite as bright as a satellite flare but brighter than the 1006AD supernova event as seen from Earth. .The table also includes the Vega to AB and ST conversions where for a given object AB = vegamag + AB(Vega) and ST = … The brightness of a star of a given luminosity L, radiated in all directions, falls off as one over the distance to the object squared:, that is b(D) is proportional to L / D 2. Absolute magnitude is a convenient way of expressing the luminosity of a star. There is a star in the Large Magellanic Cloud called R136a1which has an absolute magnitude of -12.5. It is located near R136a1, the most massive and luminous star known.
Objects of the same luminosity that are located at different distances from us will have different apparent magnitudes. R136a3 is itself one of the most massive and most luminous stars known at 180 times more massive and 3.8 million times more luminous than the Sun.


R136a1 is 165,000 light years from Earth. The Absolute Magnitude of the Sun and Vega to AB transformation for Several Filters These calculations of the absolute magnitude of the Sun use recent determinations (and calibrations) of the spectra of Sirius and Vega by R. Bohlin and of the Sun by M. Haberreiter et al. Undoubtedly others willturn up as time goes by. It is the most massive and most luminous star ever discovered.

The scale for absolute magnitude is the same as that for apparent magnitude, that is a difference of 1 magnitude = 2.512 times difference in brightness. R136A1 is -12.6 in the ‘Absolute Magnitude’ measurement, which means it is 8.7 million times brighter than our own Sun. Apparent Magnitude is also known as Visual Magnitude. Absolute magnitude is the apparent magnitude a star would have if it were 10 parsecs away from the viewer.

10%) in determining d implies an error ~2× as large (thus 20%) in luminosity. Absolute magnitude (M) is a measure of the luminosity of a celestial object, on an inverse logarithmic astronomical magnitude scale. R136a3 is a Wolf–Rayet star in R136, a massive star cluster located in Dorado.