HR 6819: EARTH’S CLOSEST BLACK HOLE EVER DISCOVERED
May 10, 2020
Astronomers have spotted the closest black hole to Earth ever discovered. The black hole, at least 4.2 times the mass of the sun, is gravitationally bound to two stars in a so-called triple system, called HR 6819, roughly 1,000 light years from Earth.
About:
HR 6819, also known as HD 167128 or QV Telescopii, is a triple star system in the southern constellation of Telescopium. It is 1,120 light years from the Sun.
A May 2020 study reported it to contain a black hole, making it the closest known black hole, and the first one located in a stellar system visible to the naked eye.
HR 6819 is a hierarchical triple containing a classical Be star in a wide orbit of unknown period, a B3 III star and a non-emitting (non-accreting) black hole, designated Ab.
Dear Student,
You have still not entered your mailing address. Please enter the address where all the study materials will be sent to you. (If applicable).
