| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| 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 | ||
| Semimajor 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 K |
| Discovery information | ||
| Discovery date | September 25, 2006 | |
| Discoverer(s) | Cameron et al. (SuperWASP and SOPHIE) South Africa and France |
|
| Detection method | Transit | |
| Discovery site | SAAO | |
| Discovery status | Published | |
| Other designations | ||
|
Garafia-1 (unofficial nickname)
|
||
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
WASP-1b is an extrasolar planet orbiting the star WASP-1 located over 1000 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.
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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.
Media related to [//commons.wikimedia.org/wiki/Category:WASP-1_b WASP-1b] at Wikimedia Commons