Astronomers have discovered a cataclysmic variable with the shortest period of rotation among the currently known systems of this type
The stellar duo consists of a white dwarf and a sun-like star that make one revolution around each other in just 51 minutes!
The ZTFJ 1813+4251 system was screened out of more than a billion stars observed as part of the Zwicky Transient Facility survey, and then studied in detail using the Keck Observatory telescope. The collected data allowed modeling of the present and future object.
The white dwarf in the ZTF J1813+4251 system is 100 times smaller than the Sun and twice as «lighter» than it. The Companion is 10 times inferior to the Sun in both parameters.