Iota Draconis b
Extrasolar planet | List of extrasolar planets | |
---|---|---|
| ||
Parent star | ||
Star | Iota Draconis | |
Constellation | Draco | |
Right ascension | (α) | 15h 24m 55.7747s |
Declination | (δ) | +58° 57′ 57.836″ |
Apparent magnitude | (mV) | 3.31 |
Distance | 102.7 ly (31.5 pc) | |
Spectral type | K2III | |
Orbital elements | ||
Semimajor axis | (a) | 1.275 ± 0.074 AU |
Eccentricity | (e) | 0.7124 ± 0.0039 |
Orbital period | (P) | 511.098 ± 0.089 d (1.4 y) |
Argument of periastron |
(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 |
Physical characteristics | ||
Minimum mass | (m sin i) | 8.82 ± 0.72 MJ |
Stellar flux | (F⊙) | 34.3 ⊕ |
Discovery information | ||
Discovery date | January 8, 2002 | |
Discoverer(s) | Frink et al. | |
Discovery method | Doppler Spectroscopy | |
Discovery status | Confirmed | |
Other designations | ||
HD 137759 b, HIP 75458 b | ||
Database references | ||
Extrasolar Planets Encyclopaedia | data | |
SIMBAD | data | |
Exoplanet Archive | data | |
Open Exoplanet Catalogue | data |
Iota Draconis b was discovered in 2002 during a radial velocity study of K-class giant stars and was the first planet discovered orbiting a giant star. It is in an eccentric orbit, which aided its detection as giant stars have pulsations which can mimic the presence of a planet.[2]
References
- ↑ 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 et al. (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.
External links
Coordinates: 15h 24m 55.7747s, +58° 57′ 57.836″