Iota Draconis b
|Exoplanet||List of exoplanets|
|Right ascension||(α)||15h 24m 55.7747s|
|Declination||(δ)||+58° 57′ 57.836″|
|Semi-major axis||(a)||1.275 ± 0.074 AU|
|Eccentricity||(e)||0.7124 ± 0.0039|
|Orbital period||(P)||511.098 ± 0.089 d
|(ω)||91.58 ± 0.81°|
|Time of periastron||(T0)||2,452,014.59 ± 0.30 JD|
|Semi-amplitude||(K)||307.6 ± 2.3 m/s|
|Minimum mass||(m sin i)||8.82 ± 0.72 MJ|
|Stellar flux||(F⊙)||34.3 ⊕|
|Discovery date||January 8, 2002|
|Discoverer(s)||Frink et al.|
|Discovery method||Doppler Spectroscopy|
Hypatia, HD 137759 b, HIP 75458 b
|Open Exoplanet Catalogue||data|
Iota Draconis b, also named Hypatia, is an extrasolar planet approximately 103 light-years from the Sun in the northern circumpolar constellation of Draco. It was the first planet discovered orbiting a giant star (Iota Draconis).
Discovered in 2002 during a radial velocity study of K-class giant stars, it is in an eccentric orbit, which aided its detection as giant stars have pulsations which can mimic the presence of a planet.
Following its discovery the planet was designated Iota Draconis b. In July 2014 the International Astronomical Union launched a process for giving proper names to certain exoplanets and their host stars. The process involved public nomination and voting for the new names. In December 2015, the IAU announced the winning name was Hypatia for this planet. The winning name was submitted by Hypatia, a student society of the Physics Faculty of the Universidad Complutense de Madrid, Spain. Hypatia was a famous Greek astronomer, mathematician, and philosopher.
- Butler; 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.
- 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. doi:10.1086/341629.
- NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
- NameExoWorlds The Process
- Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
- NameExoWorlds The Approved Names
|This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it.|