Iota Serpentis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 41m 33.1s |
| Declination | +19° 40' 13" |
| Apparent magnitude (V) | +4.51 |
| Distance | 192 ± 9 ly (59 ± 3 pc) |
| Spectral type | A1V + A1V |
| Other designations | |
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.
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