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WASP-1

Coordinates: Sky map 00h 20m 40s, +31° 59′ 24″
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WASP-1

The star WASP-1.
Observation data
Epoch 2000      Equinox 2000
Constellation Andromeda
Right ascension 00h 20m 40.077s[1]
Declination +31° 59′ 23.79″[1]
Apparent magnitude (V) 11.79
Characteristics
Spectral type F7V[1]
Apparent magnitude (B) ~12.0[1]
Apparent magnitude (V) ~11.8[1]
Astrometry
Proper motion (μ) RA: -4.8 ± 2.3[1] mas/yr
Dec.: -5.6 ± 2.3[1] mas/yr
Distance1239 ly
(380 pc)
Absolute magnitude (MV)12.0
Details
Mass1.24 (± 0.17) M☉
Radius1.382 (± 0.1) R☉
Luminosity2.4 L☉
Temperature6200 (± 200) K
Metallicity0.23 ± 0.08[2]
Other designations
TYC 2265-107-1, 2MASS J00204007+3159239, USNO-B1.0 1219-00005465, GSC 02265-00107, 1SWASP J002040.07+315923.7
Database references
SIMBADdata

WASP-1 is a metal-rich magnitude 12 star located about 1,240 light-years away in the Andromeda constellation.[2]

Planetary system

In 2006, an extrasolar planet was discovered by transit method of the SuperWASP.[3] The planet has a density of 0.31 to 0.40 g/cm3, making it about half as dense as Saturn, and one third as dense as water.

The WASP-1 planetary system
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.86 ± 0.07 MJ 0.0382 ± 0.0013 2.5199464 ± 8e-07 0 — —

References

  1. ^ a b c d e f g "SIMBAD query result: TYC 2265-107-1 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-05-20.
  2. ^ a b Stempels, H. C.; et al. (2007). "WASP-1: a lithium- and metal-rich star with an oversized planet". Monthly Notices of the Royal Astronomical Society. 379 (2): 773–778. arXiv:0705.1677. Bibcode:2007MNRAS.379..773S. doi:10.1111/j.1365-2966.2007.11976.x.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  3. ^ Cameron, A. Collier; et al. (2007). "WASP-1b and WASP-2b: two new transiting exoplanets detected with SuperWASP and SOPHIE". Monthly Notices of the Royal Astronomical Society. 375 (3): 951–957. arXiv:astro-ph/0609688. Bibcode:2007MNRAS.375..951C. doi:10.1111/j.1365-2966.2006.11350.x.{{cite journal}}: CS1 maint: unflagged free DOI (link)

See also



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