WASP-3b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
 |
||
| Parent star | ||
| Star | WASP-3 | |
| Constellation | Lyra | |
| Right ascension | (α) | 18h 33m 32s |
| Declination | (δ) | +35° 39′ 42″ |
| Apparent magnitude | (mV) | 10.64 |
| Distance | 727 ly (223 pc) |
|
| Spectral type | F7V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.0317+0.0006 −0.001 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 1.8468372 ± 6e-07 d |
| Inclination | (i) | 85.06+0.15 −0.16° |
| Time of transit | (Tt) | 2454605.55915 ± 0.00023 JD |
| Physical characteristics | ||
| Mass | (m) | 2.06 ± 0.13 MJ |
| Radius | (r) | 1.454 ± 0.084 RJ |
| Density | (ρ) | 1040 kg m-3 |
| Surface gravity | (g) | 2.71 m/s² (26.6 g) |
| Temperature | (T) | 1983 K |
| Discovery information | ||
| Discovery date | October 31, 2007 | |
| Discoverer(s) | Pollacco et al. (SuperWASP) | |
| Detection method | Transit | |
| Discovery site | ORM | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
WASP-3b is an extrasolar planet orbiting the star WASP-3 located over 727 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]
In 2010, measurements of transit timing variations of the planet WASP-3b were used to infer the presence of a second planet in the system, designated WASP-3c.[2] The discoverers note that further observations are needed to confirm the existence of this second planet.[3]
[edit] See also
[edit] References
- ^ * Pollacco et al.; Skillen, I.; Collier Cameron, A.; Loeillet, B.; Stempels, H. C.; Bouchy, F.; Gibson, N. P.; Hebb, L. et al (2008). "WASP-3b: a strongly irradiated transiting gas-giant planet". Monthly Notices of the Royal Astronomical Society 385 (3): 1576–1584. Bibcode 2008MNRAS.385.1576P. doi:10.1111/j.1365-2966.2008.12939.x. http://www3.interscience.wiley.com/journal/119396252/abstract. (web Preprint)
- ^ Planet found tugging on transits, Astronomy Now, 9 July 2010
- ^ G.Maciejewski, D.Dimitrov, R.Neuhaeuser, A.Niedzielski, St.Raetz, Ch.Ginski, Ch.Adam, C.Marka, M.Moualla, M.Mugrauer (2010). "Transit timing variation in exoplanet WASP-3b". arXiv:1006.1348v1 [astro-ph.EP].
- UK planet hunters announce three new finds (PDF requires acrobat reader)
[edit] External links
Media related to WASP-3b at Wikimedia Commons
