WASP-4 b
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| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | WASP-4 | |
| Constellation | Phoenix | |
| Right ascension | (α) | 23h 34m 15s |
| Declination | (δ) | −42° 03′ 41″ |
| Distance | 851 ly (261 pc) | |
| Spectral type | G7V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.0230±0.001 AU |
| Orbital period | (P) | 1.3382277±0.000003 d |
| Inclination | (i) | 87.54+2.34−0.41° |
| Time of periastron | (T0) | 2454365.91475±0.00017 JD |
| Physical characteristics | ||
| Mass | (m) | 1.2704+0.083−0.096 MJ |
| Radius | (r) | 1.4465+0.037−0.078 RJ |
| Discovery information | ||
| Discovery date | October 31, 2007 | |
| Discoverer(s) | Wilson et al. (SuperWASP) | |
| Detection method | Transit | |
| Discovery site | SAAO | |
| Discovery status | Published | |
WASP-4b is an extrasolar planet orbiting the star WASP-4 located over 851 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. WASP-4b 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 1678 K.
The planet was the first discovered by WASP project using cameras in South Africa.
[edit] See also
[edit] References
UK planet hunters announce three new finds (PDF requires acrobat reader)
