Most extreme white dwarf binary system found with orbit of just five minutes
Tuesday, March 9, 2010 - 10:42
in Astronomy & Space
An international team of astronomers has shown that the two stars in the binary HM Cancri definitely revolve around each other in a mere 5.4 minutes. This makes HM Cancri the binary star with by far the shortest known orbital period. It is also the smallest known binary.