Astronomy:WASP-5b
 Size comparison of WASP-5b with Jupiter. | |
| Discovery[1] | |
|---|---|
| Discovered by | Anderson et al. (SuperWASP) |
| Discovery site | SAAO |
| Discovery date | October 31, 2007 |
| Transit | |
| Orbital characteristics[2] | |
| 0.02739 ± 0.00039 AU (4,097,000 ± 58,000 km) | |
| Eccentricity | <0.012 |
| Orbital period | 1.62842953(52) d |
| Inclination | 85.8°±1.1° |
| Semi-amplitude | 268.2+4.6 −4.2 m/s |
| Star | WASP-5 |
| Physical characteristics[2] | |
| Mean radius | 1.175±0.056 RJ |
| Mass | 1.590+0.053 −0.052 Jupiter mass |
| Mean density | 1.21+0.20 −0.16 g/cm3 |
| 28.6 m/s2 2.9 g | |
| Physics | 2000±90 K (1,730 °C; 3,140 °F)[3] |
WASP-5b is an exoplanet orbiting the star WASP-5 located approximately 1000 light-years away in the constellation Phoenix. The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. The small orbital distance of WASP-5 b around its star means it belongs to a class of planets known as hot Jupiters. The planetary equilibrium temperature would be 1717 K,[1] but the measured dayside temperature is higher, with a 2015 study finding 2500±100 K[4] and a 2020 study finding 2000±90 K.[3]
A study in 2012, utilizing the Rossiter–McLaughlin effect, determined that the planetary orbit is probably aligned with the equatorial plane of the star, with misalignment equal to 12.1+8−10°.[5]
See also
References
- ↑ 1.0 1.1 Anderson, D.R.; Gillon, M.; Hellier, C.; Maxted, P. F. L.; Pepe, F.; Queloz, D.; Wilson, D. M.; Collier Cameron, A. et al. (2008). "WASP-5b: a dense, very hot Jupiter transiting a 12th-mag Southern-hemisphere star". Monthly Notices of the Royal Astronomical Society: Letters 387 (1): L4–L7. doi:10.1111/j.1745-3933.2008.00465.x. Bibcode: 2008MNRAS.387L...4A.
- ↑ 2.0 2.1 Bonomo, A. S. et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B.
- ↑ 3.0 3.1 Wong, Ian; Shporer, Avi; Daylan, Tansu; Benneke, Björn; Fetherolf, Tara; Kane, Stephen R.; Ricker, George R.; Vanderspek, Roland et al. (2020), "Systematic Phase Curve Study of Known Transiting Systems from Year One of the TESS Mission", The Astronomical Journal 160 (4): 155, doi:10.3847/1538-3881/ababad, Bibcode: 2020AJ....160..155W
- ↑ Zhou, G.; Bayliss, D. D. R.; Kedziora-Chudczer, L.; Tinney, C. G.; Bailey, J.; Salter, G.; Rodriguez, J. (2015). "Secondary eclipse observations for seven hot-Jupiters from the Anglo-Australian Telescope". Monthly Notices of the Royal Astronomical Society 454 (3): 3002–3019. doi:10.1093/mnras/stv2138. Bibcode: 2015MNRAS.454.3002Z.
- ↑ 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, Bibcode: 2012ApJ...757...18A
External links
Coordinates: 
23h 57m 24s, −41° 16′ 38″
de:WASP-5 b
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