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WR 102's size compared to the sun. WR 102 is a Wolf–Rayet star in the constellation Sagittarius, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly evolved and close to exploding as a supernova.
Star name Effective Temperature ()Mass (M ☉) Luminosity (L ☉) Spectral type Distance (light-years)Ref. WR 102: 200,000 16.1 380,000 WO2: 8,610 [1] [2] [3]WR 142: 200,000 28.6 912,000
All of the very hottest non-degenerate stars (the hottest few) are Wolf–Rayet stars, the hottest of which being WR 102, which seems to be as hot as 210,000 K, followed by WR 142 which is around 200,000 K in temperature. LMC195-1, located in the Large Magellanic Cloud, should have a similar temperature, but at the moment this temperature is ...
WR 102c is surrounded by a shell of nebulosity which contains dust made even hotter than the star itself by intense radiation. The nebula also includes nearly 1 M ☉ of molecular hydrogen and around 10 M ☉ of ionised hydrogen, all expelled from the star. [4] There is a suggestion that WR 102c may be a binary star.
WR 142 is a Wolf-Rayet star in the constellation Cygnus, an extremely rare star on the WO oxygen sequence. It is a luminous and very hot star, highly evolved and close to exploding as a supernova. It is a luminous and very hot star, highly evolved and close to exploding as a supernova.
Thermometers in the city topped out at 102 degrees on July 2, but hit an astounding 106 degrees on Wednesday – 5 degrees higher than the city’s previous warmest October day.
By Thursday, it will be 98 degrees and Friday could hit a record 102 degrees. Saturday remains hot with a forecast of 100 degrees, and Sunday provides little relief with 95 degrees predicted.
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