A binary star in which the presence of an invisible or unresolved component is inferred from irregularities in the proper motion of the visible component (see diagram). Similarly, a known binary star may prove to be an astrometric multiple star. Some astrometric binaries have subsequently been resolved by speckle interferometry. Components calculated to have extremely low mass may be either faint red dwarfs, brown dwarfs, or possibly even planets.
astrometric binary:
The presence of an unseen companion causes a visible star to wobble from side to side as it moves through space.
- mineral soil
- minette
- minette ironstone
- Ming
- Minghuang (684–762)
- mingle
- minicell
- minicomputer
- mini DIN connector
- minimal algebra
- minimal cut vector; minimal path vector
- minimal element
- minimalism
- minimal machine
- minimal medium
- minimal polynomial(of an algebraic number)
- minimal polynomial(of a square matrix)
- minimal state
- minimal supersymmetric standard model
- minimal surface
- minimax
- minimax; minimum
- minimax procedure
- minimax regret
- minimax strategy