This parameter must be known for all binary pairs in the mixture.

The neutron star was one of a binary pair.

They were a binary pair consisting of a larger reddish member and a smaller, slightly blue one.

It is a common binary pair, with seven planets in orbit around the blue dwarf.

The binary pair completes one orbit around its centre of mass once every 9.6045 days.

Norfolk was almost in direct conjunction between the binary pair.

The planet orbits this binary pair in a 138.3-day orbit.

A small percentage are binary pairs that orbit each other.

"We're caught in a plasma stream, between a binary pair!"

It's one member of a binary pair, the other member being a white dwarf star.