| Observation data Epoch {{{epoch}}} Equinox |
|
|---|---|
| Constellation | ? |
| Right ascension | ? |
| Declination | ? |
| Apparent magnitude (V) | 10.2 |
| Characteristics | |
| Spectral type | G0 |
| Astrometry | |
| Distance | 489 ly (150 pc) |
| Details | |
| Temperature | 5900 K |
| Other designations | |
WASP-9 is an unidentified magnitude 10 main sequence yellow dwarf star. It is reported to be a G type star of temperature 5900 K. The star was identified as an extrasolar planet host star by the SuperWASP project in 2008,[1] however this discovery was later retracted. The system is thought to be a hierarchical triple containing a faint eclipsing binary pair: a combination of the eclipses of the stars and the strong rotation effects led to a false observational signature of a planet.[2]