WASP-3
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 34m 31.6249s |
| Declination | +35° 39′ 41.546″ |
| Apparent magnitude (V) | +10.485 |
| Characteristics | |
| Spectral type | F7V |
| Apparent magnitude (B) | ~11.01 |
| Apparent magnitude (V) | ~10.485 |
| Apparent magnitude (J) | 9.603±0.020 |
| Apparent magnitude (H) | 9.407±0.014 |
| Apparent magnitude (K) | 9.361±0.015 |
| Variable type | V*(1SWASP) |
| Astrometry | |
| Proper motion (μ) |
RA: -5.20 mas/yr Dec.: -23.10 mas/yr |
| Distance | 727 ly (223 pc) |
| Details | |
| Mass | 1.24 −0.11+0.06 M☉ |
| Radius | 1.31 −0.12+0.06 R☉ |
| Temperature | 6400 ±100 K |
| Metallicity | 0 (±0.2 |
| Other designations | |
|
TYC 2636-195-1, 2MASS J18343163+3539415, USNO-B1.0 1256-00285133
|
|
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia |
data |
WASP-3 is a magnitude 10 yellow-white dwarf star located about 727 light-years away in the Lyra constellation. It appears to be variable; it "passed from a less active (log R'_hk=-4.95) to a more active (log R'_hk=-4.8) state between 2007 and 2010".
The extrasolar planet WASP-3b was detected by the SuperWASP project in 2007. The William Herschel Telescope had confirmed it was a planet by 2008.
In 2010, researchers proposed a second planet orbiting WASP-3. But in 2012 this proposal was debunked.
Coordinates: 
18h 34m 31.6249s, +35° 39′ 41.546″
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