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For example, a star of absolute magnitude M V = 3.0 would be 100 times as luminous as a star of absolute magnitude M V = 8.0 as measured in the V filter band. The Sun has absolute magnitude M V = +4.83. [1] Highly luminous objects can have negative absolute magnitudes: for example, the Milky Way galaxy has an absolute B magnitude of about −20 ...
The absolute magnitude M, of a star or astronomical object is defined as the apparent magnitude it would have as seen from a distance of 10 parsecs (33 ly). The absolute magnitude of the Sun is 4.83 in the V band (visual), 4.68 in the Gaia satellite's G band (green) and 5.48 in the B band (blue). [20] [21] [22]
Delta Draconis (δ Draconis, abbreviated Delta Dra, δ Dra), formally named Altais / æ l ˈ t eɪ. ɪ s /, [10] is a yellow star in the constellation of Draco.It has an apparent visual magnitude of 3.0, [2] making it easily visible to the naked eye.
AAVSO light curve for Nova Cygni 1975. The dates given are Julian day numbers.. V1500 Cygni or Nova Cygni 1975 was a bright nova occurring in 1975 in the constellation Cygnus.It had the second highest intrinsic brightness of any nova of the 20th century, exceeded only by CP Puppis in 1942.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... Absolute magnitude (M V) 4.83 [5] Absolute bolometric magnitude (M bol)
Download QR code; Print/export ... Apparent magnitude (V) +3.57 [2] Characteristics ... Absolute magnitude (M V) +0.98 +0.07 −0.06 [6]
During each cycle, the brightness of the star varies from apparent magnitude +2.29 to +2.31. This star is a proper motion member of the Lower Centaurus–Crux sub-group in the Scorpius–Centaurus OB association , the nearest such association of co-moving massive stars to the Sun. [ 6 ] Epsilon Centauri is a relatively young star, with an age ...
For example, Betelgeuse has the K-band apparent magnitude of −4.05. [5] Some stars, like Betelgeuse and Antares, are variable stars, changing their magnitude over days, months or years. In the table, the range of variation is indicated with the symbol "var". Single magnitude values quoted for variable stars come from a variety of sources.