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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra[2] |
| WASP-3A | |
| Right ascension | 18h 34m 31.6252s[3] |
| Declination | +35° 39′ 41.492″[3] |
| Apparent magnitude (V) | 10.63±0.05[4] |
| WASP-3C | |
| Right ascension | 18h 34m 30.2553s[5][6] |
| Declination | +35° 39′ 34.004″[5][6] |
| Characteristics | |
| WASP-3A | |
| Evolutionary stage | main-sequence star |
| Spectral type | F7V[4] |
| Apparent magnitude (B) | 11.07±0.06[4] |
| Apparent magnitude (G) | 10.4541±0.0028[4][6] |
| Apparent magnitude (J) | 9.603±0.020[4] |
| Apparent magnitude (H) | 9.407±0.014[4] |
| Apparent magnitude (K) | 9.361±0.015[4] |
| Variable type | planetary transit[7] |
| WASP-3B | |
| Apparent magnitude (J) | 16.88±0.12[8] |
| Apparent magnitude (H) | 16.090±0.079[8] |
| Apparent magnitude (K) | 16.002±0.052[8] |
| Astrometry | |
| WASP-3A | |
| Radial velocity (Rv) | −5.490±0.007[9] km/s |
| Proper motion (μ) | RA: −5.791(12) mas/yr[3] Dec.: −21.929(15) mas/yr[3] |
| Parallax (π) | 4.3338±0.0120 mas[3] |
| Distance | 753 ± 2 ly (230.7 ± 0.6 pc) |
| Details | |
| WASP-3A | |
| Mass | 1.24+0.06 −0.11[9]: 1581 M☉ |
| Radius | 1.366±0.044[10] R☉ |
| Surface gravity (log g) | 4.30+0.07 −0.03[9]: 1581 cgs |
| Temperature | 6400±100[9]: 1581 K |
| Metallicity | 0.00±0.20[9]: 1581 |
| Rotational velocity (v sin i) | 13.4±1.5[10] km/s |
| Age | 2.1±1.2[10] Gyr |
| WASP-3B | |
| Mass | 0.108±0.006[8]: 14 M☉ |
| Surface gravity (log g) | ~5.22[8]: 13 cgs |
| Temperature | ~2900[8]: 13 K |
| Position (relative to WASP-3A)[8]: 11, 14 | |
| Component | WASP-3B |
| Epoch of observation | 2012–2013 |
| Angular distance | ~1.19″ |
| Position angle | ~87.1° |
| Projected separation | 300±20 AU |
| Position (relative to WASP-3A)[6] | |
| Component | WASP-3C |
| Angular distance | 18.33192±0.00002″ |
| Position angle | 245.81872±0.00006° |
| Projected separation | 4230 AU |
| Other designations | |
| V838 Lyr, BD+35 3293, TOI-2131, TIC 27848472, WASP-3, TYC 2636-195-1, GSC 02636-00195, 2MASS J18343163+3539415, USNO-B1.0 1256-00285133, 1SWASP J183431.62+353941.4[4] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-3 is a triple star system located about 753 light-years (231 parsecs) away from the Sun in the constellation Lyra. The system has an apparent magnitude of 10. The brightest and most massive star of this system is WASP-3A, an F-type main sequence star which has one known transiting hot Jupiter exoplanet, WASP-3b. Since the planet transits the star, the star is classified as a planetary transit variable and has received the variable star designation V838 Lyrae.[7]
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