WASP-14b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
 |
||
| Parent star | ||
| Star | WASP-14 | |
| Constellation | Boötes | |
| Right ascension | (α) | 14h 33m 06s |
| Declination | (δ) | +21° 53′ 41″ |
| Apparent magnitude | (mV) | 9.75 |
| Distance | 520±245 ly (160±75 pc) |
|
| Spectral type | F5V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.037+0.001 −0.002 AU |
| Periastron | (q) | 0.033 AU |
| Apastron | (Q) | 0.041 AU |
| Eccentricity | (e) | 0.095+0.004 −0.007 |
| Orbital period | (P) | 2.243756+5E-6 −1E-6 d |
| Inclination | (i) | 84.79+0.52 −0.67° |
| Argument of periastron |
(ω) | 254.9+0.92 −1.72° |
| Time of transit | (Tt) | 2454465.81963+0.00065 −0.00034 JD |
| Physical characteristics | ||
| Mass | (m) | 7.725+0.43 −0.67 MJ |
| Radius | (r) | 1.259+0.08 −0.058 RJ |
| Density | (ρ) | 5133 kg m-3 |
| Surface gravity | (g) | 126.2 m/s² (12.87 g) |
| Temperature | (T) | 2800 K |
| Discovery information | ||
| Discovery date | April 1, 2008 | |
| Discoverer(s) | Cameron et al. (SuperWASP) | |
| Detection method | Transit | |
| Discovery site | SAAO | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
WASP-14b is an extrasolar planet discovered in 2008 by SuperWASP using the transit method. Follow-up radial velocity measurements showed that the mass of WASP-14b is almost eight times larger than that of Jupiter. The radius found by the transit observations show that it has a radius 25% larger than Jupiter. This makes WASP-14b one of the densest exoplanets known.[1] Its radius best fits the model of Fortney.[2]
[edit] Rotation
As of August 2008, the most recent calculation of WASP-14b's Rossiter-McLaughlin effect and so spin-orbit angle was that of Joshi.[3] This is −14 ± 17 degrees. It is too eccentric for its age and so is possibly pulled into its orbit by another planet.[1]
[edit] References
- ^ a b Joshi et al.; Pollacco, D.; Cameron, A. Collier; Skillen, I.; Simpson, E.; Steele, I.; Street, R. A.; Stempels, H. C. et al (December 29, 2008). "WASP-14b: A 7.7 Mjup transiting exoplanet in an eccentric orbit". Monthly Notices of the Royal Astronomical Society 392 (4): 1532–1538. Bibcode 2009MNRAS.392.1532J. doi:10.1111/j.1365-2966.2008.14178.x. http://www3.interscience.wiley.com/journal/121588613/abstract?CRETRY=1&SRETRY=0.
- ^ Fortney et al.; Marley, M. S.; Barnes, J. W. (2007). "Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits". The Astrophysical Journal 659 (2): 1661–1672. arXiv:astro-ph/0612671. Bibcode 2007ApJ...659.1661F. doi:10.1086/512120. http://www.iop.org/EJ/article/0004-637X/659/2/1661/70736.html.
- ^ Winn, Joshua N. (2008). "Measuring accurate transit parameters". Proceedings of the International Astronomical Union 4: 99. arXiv:0807.4929v2. doi:10.1017/S174392130802629X.
[edit] External links
Media related to WASP-14b at Wikimedia Commons
Coordinates: 
14h 33m 06s, +21° 53′ 41″
 |
This extrasolar planet related article is a stub. You can help Wikipedia by expanding it. |
