WASP-1b
| Exoplanet | List of exoplanets | |
|---|---|---|
 | ||
| Parent star | ||
| Star | WASP-1 | |
| Constellation | Andromeda | |
| Right ascension | (α) | 00h 20m 40s |
| Declination | (δ) | +31° 59′ 24″ |
| Apparent magnitude | (mV) | 11.79 |
| Distance | 1239 ly (380 pc) | |
| Spectral type | F7V | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.0382 (± 0.0013) AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 2.5199464 (± 8e-07) d |
| Inclination | (i) | 88.65 (± 0.55)° |
| Time of transit | (Tt) | 2454461.863 (± 0.0002) JD |
| Physical characteristics | ||
| Mass | (m) | 0.86 ± 0.07 MJ |
| Radius | (r) | 1.484 +0.06 −0.09 RJ |
| Density | (ρ) | 476 kg m−3 |
| Surface gravity | (g) | 12.5 m/s² (1.27 g) |
| Temperature | (T) | 1800 |
| Discovery information | ||
| Discovery date | September 25, 2006 | |
| Discoverer(s) | Cameron et al. (SuperWASP and SOPHIE)  South Africa and  France | |
| Discovery method | Transit | |
| Discovery site | SAAO | |
| Discovery status | Published | |
| Other designations | ||
| Garafia-1 (unofficial nickname) | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
WASP-1b is an extrasolar planet orbiting the star WASP-1 located 1,239 light-years away in the constellation Andromeda. In recognition of the regional support given to the project on La Palma, the discoverers gave the planet the alternative designation Garafia-1.
Orbit and mass
The radial velocity trend of WASP-1, caused by the presence of WASP-1 b.
The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. Unlike Jupiter, but similar to many other planets detected around other stars, WASP-1b is located very close to its star, and belongs to the class of planets known as hot Jupiters.
WASP-1 b was discovered via the transit method by SuperWASP, for which the star and planet are named. Follow-up radial velocity measurements confirmed the presence of an unseen companion, and allowed for the mass of WASP-1 b to be determined.[1]
See also
References
- ↑ Cameron, A. Collier; et al. (2007). "WASP-1b and WASP-2b: two new transiting exoplanets detected with SuperWASP and SOPHIE". Monthly Notices of the Royal Astronomical Society 375 (3): 951–957. arXiv:astro-ph/0609688. Bibcode:2007MNRAS.375..951C. doi:10.1111/j.1365-2966.2006.11350.x.
Further reading
- Charbonneau, David; Winn, Joshua N.; Everett, Mark E.; Latham, David W.; Holman, Matthew J.; Esquerdo, Gilbert A.; o’Donovan, Francis T. (2007). "Precise Radius Estimates for the Exoplanets WASP-1b and WASP-2b". The Astrophysical Journal 658 (2): 1322–1327. arXiv:astro-ph/0610589. Bibcode:2007ApJ...658.1322C. doi:10.1086/512008.
- Shporer, A.; Tamuz, O.; Zucker, S.; Mazeh, T. (2007). "Photometric follow-up of the transiting planet around WASP-1". Monthly Notices of the Royal Astronomical Society 376 (3): 1296–1300. arXiv:astro-ph/0610556. Bibcode:2007MNRAS.376.1296S. doi:10.1111/j.1365-2966.2007.11537.x.
External links
Media related to WASP-1b at Wikimedia Commons
Coordinates: 
00h 20m 40s, +31° 59′ 24″
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