WASP-3b
| Exoplanet | List of exoplanets | |
|---|---|---|
 |
||
| 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 | ||
| Semi-major 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 |
| Discovery information | ||
| Discovery date | October 31, 2007 | |
| Discoverer(s) | Pollacco et al. (SuperWASP) | |
| Discovery method | Transit | |
| Discovery site | ORM | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | 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.
WASP-3b undergoes no detectable gravitational tugging from other bodies in this system.
Coordinates: 
18h 33m 32s, +35° 39′ 42″
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