WASP-76

WASP-76
Observation data
Epoch J2000      Equinox
Constellation Pisces
Right ascension 01h 46m 31.8577s[1]
Declination 02° 42′ 02.0332″[1]
Apparent magnitude (V) 9.52[2]
Characteristics
Evolutionary stage main sequence star
Spectral type F7V
B−V color index 0.61
J−H color index 0.21
J−K color index 0.3
Astrometry
Radial velocity (Rv)−1.152±0.0033[3] km/s
Proper motion (μ) RA: 45.398[1] mas/yr
Dec.: -40.819[1] mas/yr
Parallax (π)5.1204 ± 0.1579 mas[1]
Distance640 ± 20 ly
(195 ± 6 pc)
Details[4]
Mass1.46±0.07 M☉
Radius1.73±0.04 R☉
Surface gravity (log g)4.4±0.1[5] cgs
Temperature6250±100 K
Metallicity [Fe/H]0.23±0.1 dex
Rotational velocity (v sin i)3.3±0.6[5] km/s
Age5.3+6.1
−2.9[5] Gyr
Other designations
WASP-76, 2MASS J01463185+0242019, Gaia DR2 2512326349403275520
Database references
SIMBADdata

WASP-76, also known as BD+01 316, is a yellow-white main sequence star in the constellation of Pisces. Since 2014, it has had one suspected stellar companion at a projected separation of 85 astronomical units.[6][7]

Planetary system

Size comparison of WASP-76 b, Jupiter and Saturn

The "hot Jupiter" class planet WASP-76b was discovered around WASP-76 in 2013.

The WASP-76 planetary system[8]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.92±0.03 MJ 0.033 1.809886±0.000001 0 88.0±1.6° 1.83±0.06 RJ

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. ^ 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.
  3. ^ Soubiran, C.; Jasniewicz, G.; Chemin, L.; Zurbach, C.; Brouillet, N.; Panuzzo, P.; Sartoretti, P.; Katz, D.; Le Campion, J. -F.; Marchal, O.; Hestroffer, D.; Thévenin, F.; Crifo, F.; Udry, S.; Cropper, M.; Seabroke, G.; Viala, Y.; Benson, K.; Blomme, R.; Jean-Antoine, A.; Huckle, H.; Smith, M.; Baker, S. G.; Damerdji, Y.; Dolding, C.; Frémat, Y.; Gosset, E.; Guerrier, A.; Guy, L. P.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics. 616: A7. arXiv:1804.09370. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 52952408.
  4. ^ Martin, Pierre-Yves (2023). "Planet WASP-76 b". exoplanet.eu. Retrieved 2024-01-17.
  5. ^ a b c West, R. G.; Hellier, C.; Almenara, J.-M.; Anderson, D. R.; Barros, S. C. C.; Bouchy, F.; Brown, D. J. A.; Collier Cameron, A.; Deleuil, M.; Delrez, L.; Doyle, A. P.; Faedi, F.; Fumel, A.; Gillon, M.; Gómez Maqueo Chew, Y.; Hébrard, G.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Smalley, B.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Udry, S. (2016). "Three irradiated and bloated hot Jupiters". Astronomy & Astrophysics. 585: A126. arXiv:1310.5607. doi:10.1051/0004-6361/201527276. S2CID 54746373.
  6. ^ Ngo, Henry; Knutson, Heather A.; Hinkley, Sasha; Bryan, Marta; Crepp, Justin R.; Batygin, Konstantin; Crossfield, Ian; Hansen, Brad; Howard, Andrew W.; Johnson, John A.; Mawet, Dimitri; Morton, Timothy D.; Muirhead, Philip S.; Wang, Ji (2016). "FRIENDS OF HOT JUPITERS. IV. STELLAR COMPANIONS BEYOND 50 au MIGHT FACILITATE GIANT PLANET FORMATION, BUT MOST ARE UNLIKELY TO CAUSE KOZAI–LIDOV MIGRATION". The Astrophysical Journal. 827 (1): 8. arXiv:1606.07102. Bibcode:2016ApJ...827....8N. doi:10.3847/0004-637X/827/1/8. S2CID 41083068.
  7. ^ Ginski, C.; Mugrauer, M.; Seeliger, M.; Buder, S.; Errmann, R.; Avenhaus, H.; Mouillet, D.; Maire, A.-L.; Raetz, S. (2016). "A lucky imaging multiplicity study of exoplanet host stars – II". Monthly Notices of the Royal Astronomical Society. 457 (2): 2173–2191. arXiv:1601.01524. Bibcode:2016MNRAS.457.2173G. doi:10.1093/mnras/stw049. S2CID 53626523.
  8. ^ Planet WASP-76 b at exoplanet.eu