Astronomy:WASP-3b

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WASP-3b
Exoplanet Comparison WASP-3 b.png
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
Orbital period1.8468372 ± 6e-07 d
Inclination85.06+0.15−0.16
StarWASP-3
Physical characteristics
Mean radius1.454 ± 0.084 |♃|J}}}}}}
Mass2.06 ± 0.13 ||J}}}}}}
Mean density1,040 kg/m3 (1,750 lb/cu yd)
2.71 m/s2 (8.9 ft/s2)
26.6 g
Physics1983


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 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. doi:10.1111/j.1365-2966.2008.12939.x. Bibcode2008MNRAS.385.1576P. https://academic.oup.com/mnras/article/385/3/1576/1013033. 
  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. doi:10.1111/j.1365-2966.2012.21926.x. Bibcode2012MNRAS.427.2757M. 
  3. Albrecht, Simon; Winn, Joshua N.; Johnson, John A.; Howard, Andrew W.; Marcy, Geoffrey W.; Butler, R. Paul; Arriagada, Pamela; Crane, Jeffrey D. et al. (2012), "Obliquities of Hot Jupiter Host Stars: Evidence for Tidal Interactions and Primordial Misalignments", The Astrophysical Journal 757 (1): 18, doi:10.1088/0004-637X/757/1/18, Bibcode2012ApJ...757...18A 

External links

Coordinates: Sky map 18h 33m 32s, +35° 39′ 42″