Iota Draconis
The red giant star Iota Draconis is located 101.2 lightyears from the Solar system in the constellation Draco.[1] The star ran out of Hydrogen, for Hydrogen fusion, left the main sequence, and relies on Helium fusion. Its mass is 1.82 times that of Sol, our sun. It is at least 55 times brighter than Sol, and has 12 times Sol's diameter.
It is the dimmest star that was bright enough for its color to be determined before telescopy was brought to Astronomy.[2]
The star has two known exoplanets, both gas giants, with eccentric orbits.
References
[edit | edit source]- ↑
"★ Star Iota Draconis". Stellar Catalog. Retrieved 2026-07-24.
Red giant Iota Draconis is located 101 light years away from the Sun. It is a single star of spectral class K2III, that has 182 % of solar mass. There are multiple known exoplanets in this system.
- ↑ Neuhäuser, R.; et al. (July 2022). "Colour evolution of Betelgeuse and Antares over two millennia, derived from historical records, as a new constraint on mass and age". Monthly Notices of the Royal Astronomical Society. 516 (1): 693–719. arXiv:2207.04702. Bibcode:2022MNRAS.516..693N. doi:10.1093/mnras/stac1969.