WASP-1b

Last updated
WASP-1b
Exoplanet Comparison WASP-1 b.png
Size comparison of WASP-1b with Jupiter
Discovery
Discovered by Cameron et al. (SuperWASP
and SOPHIE)
Flag of South Africa.svg South Africa
and Flag of France.svg France
Discovery site SAAO
Discovery dateSeptember 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

    WASP-1b is an extrasolar planet orbiting the star WASP-1 located 1,300 light-years away in the constellation Andromeda.

    Contents

    Orbit and mass

    The radial velocity trend of WASP-1, caused by the presence of WASP-1 b WASP-1 b rv.pdf
    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]

    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

    1. ↑ 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 . S2CID   735515.
    2. ↑ Simpson, E. K.; Pollacco, D.; Cameron, A. Collier; Hébrard, G.; Anderson, D. R.; Barros, S. C. C.; Boisse, I.; Bouchy, F.; Faedi, F.; Gillon, M.; Hebb, L.; Keenan, F. P.; Miller, G. R. M.; Moutou, C.; Queloz, D.; Skillen, I.; Sorensen, P.; Stempels, H. C.; Triaud, A.; Watson, C. A.; Wilson, P. A. (2011). "The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-Mc Laughlin observations★". Monthly Notices of the Royal Astronomical Society. 414 (4): 3023–3035. arXiv: 1011.5664 . Bibcode:2011MNRAS.414.3023S. doi: 10.1111/j.1365-2966.2011.18603.x . S2CID   46522188.

    Further reading

    Commons-logo.svg Media related to WASP-1b at Wikimedia Commons

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