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]
![]() Size comparison of WASP-3b with Jupiter. | |
Discovery | |
---|---|
Discovered by | Pollacco et al. (SuperWASP) |
Discovery site | ORM |
Discovery date | October 31, 2007 |
Transit | |
Orbital characteristics | |
0.0317+0.0006 −0.001 AU | |
Eccentricity | 0 |
1.8468372 ± 6e-07 d | |
Inclination | 85.06+0.15 −0.16 |
Star | WASP-3 |
Physical characteristics | |
1.454 ± 0.084 RJ | |
Mass | 2.06 ± 0.13 MJ |
Mean density | 1.04 g/cm3[citation needed] |
23.44 m/s2; 2.390 g0[1] | |
Temperature | 1,983 K (1,710 °C) |
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
editReferences
edit- ^ a b 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.
- ^ 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.
- ^ 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
External links
editMedia related to WASP-3b at Wikimedia Commons