WASP-1b
Extrasolar planet in the Andromeda constellation From Wikipedia, the free encyclopedia
WASP-1b is an extrasolar planet orbiting the star WASP-1 located 1,300 light-years away in the constellation Andromeda.
Size comparison of WASP-1b with Jupiter | |
| Discovery | |
|---|---|
| Discovered by | Cameron et al. (SuperWASP and SOPHIE) South Africa and France |
| Discovery site | SAAO |
| Discovery date | September 25, 2006 |
| Transit | |
| Orbital characteristics | |
| 0.0382 (± 0.0013) AU | |
| Eccentricity | 0 |
| 2.5199464 (± 8e-07) d | |
| Inclination | 88.65 (± 0.55) |
| Star | WASP-1 |
| Physical characteristics | |
| 1.484 +0.06 −0.09 RJ | |
| Mass | 0.86 ± 0.07 MJ |
Mean density | 0.476 g/cm3[citation needed] |
| 12.5 m/s2 (41 ft/s2) 1.27 g | |
| Temperature | 1,800 K |
Orbit and mass
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]
In 2018, it was discovered via observations of the Rossiter-McLaughlin effect that the orbit of WASP-1b is strongly misaligned with rotational axis of the star by 79.0+4.3
−4.5 degrees, making it a nearly "polar" orbit.[2]
See also
References
Further reading
External links
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