Iota Serpentis

Starbox short
name=ι Serpentis
epoch=J2000.0
constell=Serpens
ra=15^h 41^m 33.1^s
dec=+19° 40' 13"
spectral=A1V + A1V
appmag_v=+4.51
dist_ly=192 ± 9
dist_pc=59 ± 3
names=21 Serpentis, HR 5842,
HD 140159, SAO 101682,
HIP 76852, ADS 9744,
CCDM J15416+1940

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 evidenceindicates 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.