WASP-3b

WASP-3b is an extrasolar planet orbiting the star WASP-3 located approximately 800 light-years away in the constellation Lyra. It was discovered via the transit method by SuperWASP, and follow up radial velocity observations confirmed that WASP-3b is a planet. The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. WASP-3b has such an orbital distance around its star to classify it in the class of planets known as hot Jupiters and has an atmospheric temperature of approximately 1983 K.[1]

WASP-3b
Size comparison of WASP-3b with Jupiter.
Discovery
Discovered byPollacco et al. (SuperWASP)
Discovery siteORM
Discovery dateOctober 31, 2007
Transit
Orbital characteristics
0.0317+0.0006
−0.001 AU
Eccentricity0
1.8468372 ± 6e-07 d
Inclination85.06+0.15
−0.16
StarWASP-3
Physical characteristics
Mean radius
1.454 ± 0.084 RJ
Mass2.06 ± 0.13 MJ
Mean density
1,040 kg/m3 (1,750 lb/cu yd)
2.71 m/s2 (8.9 ft/s2)
26.6 g
Temperature1983

    WASP-3b undergoes no detectable gravitational tugging from other bodies in this system.[2]

    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 3.3+2.5
    −4.4    °.[3]

    See also

    References
    1. Pollacco, D.; et al. (2008). "WASP-3b: a strongly irradiated transiting gas-giant planet". Monthly Notices of the Royal Astronomical Society. 385 (3): 1576–1584. arXiv:0711.0126. Bibcode:2008MNRAS.385.1576P. doi:10.1111/j.1365-2966.2008.12939.x. S2CID 2317308.
    2. M Montalto; et al. (Nov 2, 2012). "A new analysis of the WASP-3 system: no evidence for an additional companion". MNRAS. 427 (4): 2757. arXiv:1211.0218. Bibcode:2012MNRAS.427.2757M. doi:10.1111/j.1365-2966.2012.21926.x. S2CID 59381004.
    3. Albrecht, Simon; Winn, Joshua N.; Johnson, John A.; Howard, Andrew W.; Marcy, Geoffrey W.; Butler, R. Paul; Arriagada, Pamela; Crane, Jeffrey D.; Shectman, Stephen A.; Thompson, Ian B.; Hirano, Teruyuki; Bakos, Gaspar; Hartman, Joel D. (2012), "Obliquities of Hot Jupiter Host Stars: Evidence for Tidal Interactions and Primordial Misalignments", The Astrophysical Journal, 757 (1): 18, arXiv:1206.6105, Bibcode:2012ApJ...757...18A, doi:10.1088/0004-637X/757/1/18, S2CID 17174530

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