 Artist's concept of Iota Draconis b (foreground) orbiting its parent star (center). | |
| Discovery | |
|---|---|
| Discovered by | Frink et al. |
| Discovery date | January 8, 2002 |
| Doppler Spectroscopy | |
| Orbital characteristics[2] | |
| 1.453±0.026 AU | |
| Eccentricity | 0.7010+0.0016 −0.0017 |
| 1.398643 ± 0.000035 a (510.854 ± 0.013 d) | |
| Inclination | 46+27 −19 |
| 87+64 −60 | |
| 2455590.17±0.13 | |
| 89.90±0.30 | |
| Semi-amplitude | 307.6 (± 2.3) |
| Star | Iota Draconis |
| Physical characteristics | |
| 1.1+0.22 −0.19 RJ[3] | |
| Mass | 16.4+9.3 −4.0 MJ[2] |
Iota Draconis b, formally named Hypatia (pronounced /haɪˈpeɪʃiə/ or /hɪˈpeɪʃə/), is an exoplanet orbiting the K-type giant star Iota Draconis about 101.2 light-years (31 parsecs, or nearly 2.932×1014 km) from Earth in the constellation Draco. The exoplanet was found by using the radial velocity method, from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star. It was the first planet discovered orbiting a giant star.[4]
- ^ Butler, R. P.; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572. Archived from the original on 2019-12-07. Retrieved 2009-03-11.
- ^ a b Cite error: The named reference
Hill2021was invoked but never defined (see the help page). - ^ Cite error: The named reference
campante2023was invoked but never defined (see the help page). - ^ Frink; Mitchell, David S.; Quirrenbach, Andreas; Fischer, Debra A.; Marcy, Geoffrey W.; Butler, R. Paul (2002). "Discovery of a Substellar Companion to the K2 III Giant Iota Draconis". The Astrophysical Journal. 576 (1): 478–484. Bibcode:2002ApJ...576..478F. CiteSeerX 10.1.1.6.5332. doi:10.1086/341629. S2CID 12778096.