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Betelgeuse typically shows only small brightness changes near to magnitude +0.5, although at its extremes it can become as bright as magnitude 0.0 or as faint as magnitude +1.6. Betelgeuse is listed in the General Catalogue of Variable Stars with a possible period of 2,335 days. [8]
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.
This is a list of the brightest natural objects in the sky.This list orders objects by apparent magnitude from Earth, not anywhere else.This list is with reference to naked eye viewing; all objects are listed by their visual magnitudes, and objects too close together to be distinguished are listed jointly.
Astronomers have determined the cause of the dramatic dimming observed last year and earlier this year of one of the brightest stars in the night sky, a colossus called Betelgeuse that appears to ...
Betelgeuse will visible by gazing back toward Orion, with the star appearing reddish at the constellation’s shoulder. Meanwhile, a meteor shower is underway in both the Northern Hemisphere and ...
Betelgeuse has entered an uncommon period of brightening again, this time rising in brightness by around 50 percent. Is the star about to go supernova?
would be seen as a large, very bright bluish disk of 35° apparent diameter −37.42 star Betelgeuse: seen from 1 AU away −30.30: star Sirius A: seen from 1 AU away −29.30: star Sun: seen from Mercury at perihelion: −27.40: star Sun: seen from Venus at perihelion −26.832: star Sun: seen from Earth [16] about 400,000 times as bright as ...
Betelgeuse made everybody think it was going to explode in a spectacular supernova. It turns out the star just belched and shrouded itself in dust.