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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[2]
Apparent magnitude (B) ~12.0[2]
Apparent magnitude (V) ~11.8[2]
Astrometry
Proper motion (μ) RA: −4.706±0.078[1] mas/yr
Dec.: −3.237±0.072[1] mas/yr
Parallax (π)2.5171±0.0676 mas[1]
Distance1,300 ± 30 ly
(400 ± 10 pc)
Details
Mass1.24 (± 0.17) M☉
Radius1.382 (± 0.1) R☉
Luminosity2.4 L☉
Temperature6200 (± 200) K
Metallicity0.23 ± 0.08[3]
Other designations
1SWASP J002040.07+315923.7, USNO-B1.0 1219-00005465, TYC 2265-107-1, GSC 02265-00107, 2MASS J00204007+3159239[2]
Database references
SIMBADdata

WASP-1 is a metal-rich magnitude 12 star located about 1,300 light-years away in the Andromeda constellation.[3]

Planetary system

In 2006, an extrasolar planet was discovered by the Wide Angle Search for Planets team using the transit method.[4] 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[5]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.948+0.029
−0.028 MJ 		0.03958+0.00047
−0.00049 		2.51994480±0.00000050 <0.013 90.0+0.0
−2.9° 		1.514+0.052
−0.047 RJ

See also

References

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d "TYC 2265-107-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-05-20.
  3. ^ 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.
  4. ^ 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.
  5. ^ Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882.



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