IOTA SERPENTIS

'Iota Serpentis' (ι Ser / ι Serpentis) is a star system in the constellation Serpens, in its head (Serpens Caput). It is approximately 192 light years from Earth.
At the centre of the system is a spectroscopic binary, 'Iota Serpentis A' and 'B'. These are both white A-type main sequence dwarfs and both have apparent magnitudes of +5.3. This binary appears to have an orbital period of 11 years; spectroscopic evidence
indicates a third companion of A and B. A and B also have two distant companions, 'Iota Serpentis C', a 13th magnitude star 143 arcseconds away and 'Iota Serpentis D', a 12th magnitude star 151 arcseconds distant.