WASP-5b

WASP-5b is an extrasolar planet orbiting the star WASP-5 located approximately 1000 light-years away in the constellation Phoenix. The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. The small orbital distance of WASP-5 b around its star mean it belongs to a class of planets known as hot Jupiters. The equilibrium planetary temperature would be 1717 K,[2] but measured in 2015 temperature was still much higher at 2500±100 K.[1] Dayside temperature measured in 2020 was 2000±90 K.[3]

WASP-5b
Size comparison of WASP-5b with Jupiter.
Discovery
Discovered byAnderson et al. (SuperWASP)
Discovery siteSAAO
Discovery dateOctober 31, 2007
Transit
Orbital characteristics
0.02729 ± 0.00056 AU (4,083,000 ± 84,000 km)
Eccentricity0
1.6284246 ± 1.3e-6 d
Inclination85.8 ± 1.1
StarWASP-5
Physical characteristics
Mean radius
1.171 ± 0.057 RJ
Mass1.637 ± 0.082 MJ
Mean density
1,352 kg/m3 (2,279 lb/cu yd)
29.6 ± 2.8 m/s2 (97.1 ± 9.2 ft/s2)
3.02 g
Temperature2500±80[1]

    The study in 2012, utilizing a Rossiter–McLaughlin effect, have determined the planetary orbit is probably aligned with the equatorial plane of the star, misalignment equal to 12.1+8
    −10    °.[4]

    See also

    References
    1. Zhou, G.; Bayliss, D. D. R.; Kedziora-Chudczer, L.; Tinney, C. G.; Bailey, J.; Salter, G.; Rodriguez, J. (2015). "Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope". Monthly Notices of the Royal Astronomical Society. 454 (3): 3002–3019. arXiv:1509.04147. Bibcode:2015MNRAS.454.3002Z. doi:10.1093/mnras/stv2138.
    2. Anderson; Gillon, M.; Hellier, C.; Maxted, P. F. L.; Pepe, F.; Queloz, D.; Wilson, D. M.; Collier Cameron, A.; Smalley, B.; Lister, T. A.; Bentley, S. J.; Blecha, A.; Christian, D. J.; Enoch, B.; Hebb, L.; Horne, K.; Irwin, J.; Joshi, Y. C.; Kane, S. R.; Marmier, M.; Mayor, M.; Parley, N. R.; Pollacco, D. L.; Pont, F.; Ryans, R.; Ségransan, D.; Skillen, I.; Street, R. A.; Udry, S.; et al. (2008). "WASP-5b: a dense, very hot Jupiter transiting a 12th-mag Southern-hemisphere star". Monthly Notices of the Royal Astronomical Society: Letters. 387 (1): L4–L7. arXiv:0801.1685. Bibcode:2008MNRAS.387L...4A. doi:10.1111/j.1745-3933.2008.00465.x. Archived from the original on 2010-04-08.
    3. Systematic phase curve study of known transiting systems from year one of the TESS mission, 2020, arXiv:2003.06407
    4. Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments, 2012, arXiv:1206.6105

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