Back ডব্লিউএএসপি ১৫ Bengali/Bangla دبلیوایاسپی-۱۵ Persian WASP-15 French WASP-15 Japanese WASP-15 Korean WASP-15 Polish WASP-15 Russian WASP-15 (Nyamien) Swedish WASP-15 Ukrainian WASP-15 Vietnamese
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 55m 42.7120s[2] |
| Declination | −32° 09′ 34.616″[2] |
| Apparent magnitude (V) | 10.91[3] |
| Characteristics | |
| Spectral type | F5[3] |
| Apparent magnitude (B) | ~11.3[3] |
| Apparent magnitude (R) | ~11.0[3] |
| Apparent magnitude (J) | 9.956 ± 0.023[3] |
| Apparent magnitude (H) | 9.713 ± 0.025[3] |
| Apparent magnitude (K) | 9.693 ± 0.023[3] |
| Astrometry | |
| Radial velocity (Rv) | −2.42±0.43[2] km/s |
| Proper motion (μ) | RA: 8.723 mas/yr[2] Dec.: −22.328 mas/yr[2] |
| Parallax (π) | 3.4891±0.0176 mas[2] |
| Distance | 935 ± 5 ly (287 ± 1 pc) |
| Details[4] | |
| Mass | 1.18±0.12 M☉ |
| Radius | 1.477±0.072 R☉ |
| Luminosity | 3.09±0.34 L☉ |
| Surface gravity (log g) | 4.169±0.033 cgs |
| Temperature | 6300±100 K |
| Metallicity [Fe/H] | −0.17±0.11 dex |
| Rotational velocity (v sin i) | 4±2 km/s |
| Age | 3.9+2.8 −1.3 Gyr |
| Other designations | |
| Nyamien, CD−31 10766, TOI-820, TIC 111991770, WASP-15, TYC 7283-1162-1, 2MASS J13554270-3209345[3] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-15, also named Nyamien, is a magnitude 11 star located about 935 light-years away in the constellation Centaurus.[3] 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.[4] 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.[4]
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