WASP-3b explained

WASP-3b
Discoverer:Pollacco et al. (SuperWASP)
Discovery Site:ORM
Discovered:October 31, 2007
Discovery Method:Transit
Apsis:astron
Semimajor:0.0317 AU
Eccentricity:0
Period:1.8468372 ± 6e-07 d
Inclination:85.06
Mean Radius:1.454 ± 0.084
Mass:2.06 ± 0.13

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.

WASP-3b undergoes no detectable gravitational tugging from other bodies in this system.[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 3.3°.

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Notes and References

  1. A new analysis of the WASP-3 system: no evidence for an additional companion. Nov 2, 2012. M Montalto. 1211.0218. MNRAS. 2012MNRAS.427.2757M . 10.1111/j.1365-2966.2012.21926.x. J.. Gregorio. 1. Boue. G.. Mortier. A.. Boisse. I.. Oshagh. M.. Maturi. M.. Figueira. P.. Sousa. S.. Santos. N. C.. 427. 4. 2757. 59381004.