Sirius B

Sirius B (also known as the Pup), is a white dwarf star and the faint companion to Sirius A, the brightest star in Earth's night sky (also known as the "Dog Star"), located in the constellation of Canis Major. It is a white dwarf, a remnant of an intermediate-mass star that have end its life, being the closest example to Earth. It is the secondary object of the Sirius binary system, of which the 'A' component is the brightest star in the night sky. Sirius B, on the other hand, can't be seen to the naked eye, as its luminosity is only 2% that of the Sun. Sirius is the fifth-nearest star system to the Sun, 8.6 light-years distant. Like all white dwarfs, Sirius B is massive and dense: While its size is comparable to that of Earth, its mass is equivalent to that of the Sun. It is the progenitor of a 5 M☉ star that existed around 100 million years ago. Sirius B's current temperature is of 25,000 K (24,700 °C; 44,500 °F), 2.5 times hotter than Sirius A and over four times hotter than the Sun. It no longer produce energy via nuclear fusion, and its remaining heat will escape to space over time. Due to its proximity, Sirius B has been the target of many studies in the last decades in attempt to discover extrasolar planets. None of them has detected a planet around Sirius B, though some planetary architethures still cannot be ruled out by current observations.

Full machine-verifiable record (JSON-LD, dual-chain proof, every album and recording): https://artists.proofprofile.net/storage/jsonld/artists/1154/artist-2363732.json