WASP-66

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WASP-66
Observation data
Epoch J2000      Equinox J2000
Constellation Antlia
Right ascension 10h 32m 54.001s[1]
Declination −34° 59′ 23.37″[1]
Apparent magnitude (V) 11.60[1]
Characteristics
Spectral type F4[2]
Astrometry
Proper motion (μ) RA: 14.3[1] mas/yr
Dec.: -11.5[1] mas/yr
Parallax (π)2.00 ± 0.39[3] mas
Distance1240 ± 300 ly
(380 ± 100[4] pc)
Details[5]
Mass1.30±0.07 M☉
Radius1.75±0.09 R☉
Surface gravity (log g)5.00[6] cgs
Temperature6600±150 K
Metallicity [Fe/H]0.05[6] dex
Rotational velocity (v sin i)13.4±0.9 km/s
Age3.7+0.7
−1.2 Gyr
Other designations
TYC 7193-1804-1, 2MASS J10325399-3459234[7]
Database references
SIMBADdata

WASP-66, also known as TYC 7193-1804-1, is an F-type star in the constellation Antlia. It has an apparent magnitude of 11.6,[7] which is much too faint to be seen with the unaided eye. The star is younger than Sun at 3.7+0.7
−1.2 billion years, and may be either metal-poor[5] or similar to Sun[6] in concentration of heavy elements.

According to survey published in 2017, WASP-66 has a one suspected companion - a red dwarf star with temperature 3330±150 K, at projected separation 6800±700 AU.[8]

Planetary system[]

In 2012, a superjovian planet around WASP-66 was discovered. WASP-66b has a mass that is about 2.3 times that of Jupiter. It takes just over 4 days to complete an orbit around its star, making it a typical hot Jupiter. The planet was discovered by the transit method – this is when a planet passes in front of a star, temporarily blocking some of the star's light.[4]

The planetary orbit is well aligned with the equatorial plane of the star, misalignment angle been equal to −4±22°.[9] The planet`s equilibrium temperature is 1790±60 K.[4]

The WASP-66 planetary system[5]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 2.37±0.14 MJ 0.05461+0.00099
−0.00096 		4.0860520±0.000007 <0.046 85.9±0.9° 1.09+0.25
−0.19 RJ

References[]

  1. ^ a b c d e 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.
  2. ^ "Notes on WASP-66 b". Retrieved 1 February 2017.
  3. ^ Gaia Collaboration; Brown, A. G. A.; Vallenari, A.; Prusti, T.; De Bruijne, J. H. J.; Mignard, F.; Drimmel, R.; Babusiaux, C.; Bailer-Jones, C. A. L.; Bastian, U.; Biermann, M.; Evans, D. W.; Eyer, L.; Jansen, F.; Jordi, C.; Katz, D.; Klioner, S. A.; Lammers, U.; Lindegren, L.; Luri, X.; O'Mullane, W.; Panem, C.; Pourbaix, D.; Randich, S.; Sartoretti, P.; Siddiqui, H. I.; Soubiran, C.; Valette, V.; Van Leeuwen, F.; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy & Astrophysics. 595: A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. S2CID 1828208.
  4. ^ a b c Hellier, Coel; et al. (2012). "Seven transiting hot Jupiters from WASP-South, Euler and TRAPPIST: WASP-47b, WASP-55b, WASP-61b, WASP-62b, WASP-63b, WASP-66b and WASP-67b". Monthly Notices of the Royal Astronomical Society. 426 (1): 739–750. arXiv:1204.5095. Bibcode:2012MNRAS.426..739H. doi:10.1111/j.1365-2966.2012.21780.x. S2CID 54713354.
  5. ^ a b c Bonomo, A. S.; et al. (2017), "The GAPS Programme with HARPS-N at TNG", Astronomy & Astrophysics, 602: A107, arXiv:1704.00373, doi:10.1051/0004-6361/201629882, S2CID 118923163
  6. ^ a b c Delgado Mena, E. (2015). "Li abundances in F stars: planets, rotation, and Galactic evolution". Astronomy & Astrophysics. 576: A69. arXiv:1412.4618. Bibcode:2015A&A...576A..69D. doi:10.1051/0004-6361/201425433. S2CID 56051637.
  7. ^ a b "KOI-952". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 January 2017.
  8. ^ Evans, D. F.; et al. (2017), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP)", Astronomy & Astrophysics, 610: A20, arXiv:1709.07476, doi:10.1051/0004-6361/201731855, S2CID 53400492
  9. ^ Addison, B. C.; Tinney, C. G.; Wright, D. J.; Bayliss, D. (2016), "SPIN–ORBIT ALIGNMENT FOR THREE TRANSITING HOT JUPITERS: WASP-103b, WASP-87b, and WASP-66b", The Astrophysical Journal, 823 (1): 29, arXiv:1603.05754, Bibcode:2016ApJ...823...29A, doi:10.3847/0004-637X/823/1/29, S2CID 118686465


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