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Iota Draconis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Draco
Right ascension 15h 24m 55.7747s
Declination +58° 57' 57.836"
Apparent magnitude (V) 3.31
Distance 102.7 ly
(31.5 pc)
Spectral type K2III
Other designations
Edasich, 12 Draconis, HR 5744, HD 137759, HIP 75458

Iota Draconis (ι Dra / ι Draconis) is an orange giant star located 103 light-years (32 pc) away in the constellation Draco. A visually unremarkable star of apparent magnitude 3.31, it has recently been discovered to have a planet.[1]

It has the traditional name Edasich, with Eldsich recorded in the Century Cyclopedia. The Chinese knew it as Tso Choo 'Left Pivot'. It was called Al Ḍhiba' of Ulug Beg and the Dresden Globe, or Al dhīlī 'Male hyena' by Kazwini.[2]

The Iota Draconis system[3]
(in order from star)
Mass Semimajor axis
Orbital period
b ≥8.82 ± 0.72 MJ 1.275 ± 0.074 511.098 ± 0.089 0.7124 ± 0.0039


External links

Coordinates: Sky map 15h 24m 55.7747s, +58° 57′ 57.836″



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