WASP-7 b

Extrasolar planet in the constellation Microscopium From Wikipedia, the free encyclopedia

WASP-7 b

WASP-7 b is an extrasolar planet discovered in 2008. This 5-day period planet, orbiting a round the star WASP-7, is slightly smaller than Jupiter, roughly the same mass and more dense.[2]

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WASP-7 b
Thumb
Size comparison of WASP-7 b with Jupiter.
Discovery
Discovered byCameron et al. (SuperWASP)
Discovery siteSAAO
Discovery dateApril 1, 2008
Transit
Orbital characteristics
0.0618+0.0014
0.0033
AU
Eccentricity0.0173+0.0009
0.0011
[1]
4.954658+5.5e-5
4.3e-5
d
Inclination89.6+0.4
0.9
StarWASP-7
Physical characteristics
0.915+0.046
0.04
RJ
Mass0.96+0.12
0.18
MJ
Mean density
1.66 g/cm3[citation needed]
3.03 g
Temperature1393+80
82
K[1]
    Close

    A study in 2012, utilizing the Rossiter–McLaughlin effect, determined the planetary orbit is strongly misaligned with the equatorial plane of the star, with misalignment equal to 86±8°, making the planetary orbit nearly polar.[3] The orbit is also slightly eccentric, which is surprising given the tidal circularization timescale of below 650 million years.[1]

    Physical properties

    The measured temperature on the planetary dayside is 1393+80
    82
    K.[1] Sodium was detected in the planetary atmosphere in 2022.[4]

    See also

    References

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