| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 34m 31.6241s [1] |
| Declination | +35° 39′ 41.488″ [1] |
| Apparent magnitude (V) | 10.63 [2] |
| Characteristics | |
| Spectral type | F7V [3] |
| Apparent magnitude (B) | 11.07 [2] |
| Apparent magnitude (J) | 9.603±0.020 [3] |
| Apparent magnitude (H) | 9.407±0.014 [3] |
| Apparent magnitude (K) | 9.361±0.015 [3] |
| Variable type | EP [3] |
| Astrometry | |
| Proper motion (μ) |
RA: −4.896±1.058
[1]
mas/
yr Dec.: −21.664±0.686 [1] mas/ yr |
| Parallax (π) | 4.07 ± 0.32 mas [1] |
| Distance | 800 ± 60
ly (250 ± 20 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 | |
| Database references | |
| SIMBAD | data |
WASP-3 is a magnitude 10 yellow-white dwarf star located about 800 light-years away in the Lyra constellation. [3] 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". [4]
Planetary system
The extrasolar planet WASP-3b was detected by the SuperWASP project in 2007. [5] The William Herschel Telescope had confirmed it was a planet by 2008.
In 2010, researchers proposed a second planet orbiting WASP-3. [6] [7] But in 2012 this proposal was debunked. [4]
| 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
- ^ a b c d e Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv: 1609.04172. Bibcode: 2016A&A...595A...2G. doi: 10.1051/0004-6361/201629512. S2CID 1828208. Gaia Data Release 1 catalog entry
- ^ a b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. doi: 10.1888/0333750888/2862.
- ^ a b c d e f "TYC 2636-195-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-05-04.
- ^ a b 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. S2CID 59381004.
- ^ Pollacco, D.; 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. S2CID 2317308.
- ^ Planet found tugging on transits Archived 2010-07-13 at the Wayback Machine, 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". Monthly Notices of the Royal Astronomical Society. 407 (4): 2625–2631. arXiv: 1006.1348. Bibcode: 2010MNRAS.407.2625M. doi: 10.1111/j.1365-2966.2010.17099.x. S2CID 120998224.
External links
- "WASP-3". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-05-04.