WASP-15
WASP-15, also named Nyamien, is a magnitude 11 star located about 1000 light-years away in the constellation Centaurus. The star, which is more massive, larger, hotter, and more luminous than the Sun, is also less metal-rich than the Sun. WASP-15 has one known planet in its orbit, WASP-15b; the planet is a Hot Jupiter with an anomalously high radius, a phenomenon which may be explained by the presence of an internal heat source. The star was first observed by the SuperWASP program in 2006; future measurements in 2007 and 2008, as well as follow-up observations and analysis, eventually led to the discovery of WASP-15b using the transit method and Doppler spectroscopy.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 55m 42.7103s |
| Declination | −32° 09′ 34.606″ |
| Apparent magnitude (V) | 10.9 |
| Characteristics | |
| Spectral type | F5 |
| Apparent magnitude (B) | ~11.3 |
| Apparent magnitude (R) | ~11.0 |
| Apparent magnitude (J) | 9.956 ± 0.023 |
| Apparent magnitude (H) | 9.713 ± 0.025 |
| Apparent magnitude (K) | 9.693 ± 0.023 |
| Astrometry | |
| Radial velocity (Rv) | -1.6 km/s |
| Proper motion (μ) | RA: 10.164±2.113 mas/yr Dec.: −23.033±1.364 mas/yr |
| Parallax (π) | 3.5168 ± 0.0416 mas |
| Distance | 930 ± 10 ly (284 ± 3 pc) |
| Details | |
| Mass | 1.18 ± 0.12 M☉ |
| Radius | 1.477 ± 0.072 R☉ |
| Temperature | 6300 ± 100 K |
| Metallicity [Fe/H] | −0.17 ± 0.11 dex |
| Age | 3.9 +2.8 −1.3 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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