WASP-3
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 34m 31.6249s[1] |
| Declination | +35° 39′ 41.546″[1] |
| Apparent magnitude (V) | +10.485[1] |
| Characteristics | |
| Spectral type | F7V[1] |
| Apparent magnitude (B) | ~11.01[1] |
| Apparent magnitude (V) | ~10.485[1] |
| Apparent magnitude (J) | 9.603±0.020[1] |
| Apparent magnitude (H) | 9.407±0.014[1] |
| Apparent magnitude (K) | 9.361±0.015[1] |
| Variable type | V*(1SWASP)[1] |
| Astrometry | |
| Proper motion (μ) | RA: -5.20[1] mas/yr Dec.: -23.10[1] 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.[1] 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".[2]
Planetary system
The extrasolar planet WASP-3b was detected by the SuperWASP project in 2007.[3] The William Herschel Telescope had confirmed it was a planet by 2008.
In 2010, researchers proposed a second planet orbiting WASP-3.[4][5] But in 2012 this proposal was debunked.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 2.06 ± 0.13 MJ | 0.0313 ± 0.0001 | 1.8468372 ± 6e-07 | 0 | — | — |
See also
References
- 1 2 3 4 5 6 7 8 9 10 11 12 13 "SIMBAD query result: TYC 2636-195-1 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-04.
- 1 2 M Montalto; Gregorio, J.; Boue, G.; Mortier, A.; Boisse, I.; Oshagh, M.; Maturi, M.; Figueira, P.; Sousa, S.; Santos, N. C. (Nov 2, 2012). "A new analysis of the WASP-3 system: no evidence for an additional companion". MNRAS. 427 (4): 2757. arXiv:1211.0218
. Bibcode:2012MNRAS.427.2757M. doi:10.1111/j.1365-2966.2012.21926.x. - ↑ Pollacco; Skillen, I.; Collier Cameron, A.; Loeillet, B.; Stempels, H. C.; Bouchy, F.; Gibson, N. P.; Hebb, L.; et al. (2008). "WASP-3b: a strongly irradiated transiting gas-giant planet". Monthly Notices of the Royal Astronomical Society. 385 (3): 1576–1584. arXiv:0711.0126. Bibcode:2008MNRAS.385.1576P. doi:10.1111/j.1365-2966.2008.12939.x.
- ↑ Planet found tugging on transits, Astronomy Now, 9 July 2010
- ↑ G.Maciejewski; D.Dimitrov; R.Neuhaeuser; A.Niedzielski; St.Raetz; Ch.Ginski; Ch.Adam, C.Marka; M.Moualla; M.Mugrauer (2010). "Transit timing variation in exoplanet WASP-3b". arXiv:1006.1348v1 [astro-ph.EP].
External links
- "WASP-3". Exoplanets. Retrieved 2009-05-04.
Coordinates: 
18h 34m 31.6249s, +35° 39′ 41.546″
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