WASP-76

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WASP-76
Artist Impression of the exoplanet WASP-76b (noirlab2318a).jpg
Artist impression of WASP-76b and WASP-76 [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Pisces [2]
Right ascension 01h 46m 31.8576s [3]
Declination 02° 42′ 02.030″ [3]
Apparent magnitude  (V)9.52 [4]
Characteristics
Evolutionary stage main sequence [5] [3]
Spectral type F7 [5]
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 [6] km/s
Proper motion (μ)RA: +45.531 [3] mas/yr
Dec.: −40.593 [3] mas/yr
Parallax (π)5.2899±0.0826  mas [3]
Distance 617 ± 10  ly
(189 ± 3  pc)
Details
Mass 1.280±0.028 [7]   M☉
Radius 1.667±0.020 [7]   R☉
Luminosity 4.6 [3]   L☉
Surface gravity (log g)4.4±0.1 [5]   cgs
Temperature 6,250±100 [5]   K
Metallicity [Fe/H]0.23±0.1 [5]   dex
Rotational velocity (v sin i)3.3±0.6 [5]  km/s
Age 5.3+6.1
−2.9 [5]   Gyr
Other designations
WASP-76, 2MASS J01463185+0242019, Gaia DR3 2512326349403275520
Database references
SIMBAD data

WASP-76, also known as BD+01 316, is a yellow-white main sequence star in the constellation of Pisces. A suspected stellar companion at a projected separation of 85 astronomical units was reported in 2014. [8]

Contents

After about five billion years, WASP-76 has expanded and become more luminous than at the start of its main sequence life, but most probably has not yet reached the subgiant branch. [3] [5]

Planetary system

Size comparison of WASP-76 b, Jupiter and Saturn WASP-76 b size comparison.png
Size comparison of WASP-76 b, Jupiter and Saturn
Artistic image of WASP-76b, showing its possible glory effect WASP-76bEffetdeGloire.jpg
Artistic image of WASP-76b, showing its possible glory effect

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

Analysis of transit-timing variations suggest an additional planet in the system. [7]

The WASP-76 planetary system [7]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.92  MJ 0.0316±0.00021.80988132(12)0.00087±0.0003187.88±0.16 ° 1.842±0.024  RJ

References

  1. ↑ "Gemini North Detects Multiple Rock-Forming Elements in the Atmosphere of a Scorching Exoplanet" (Press release). NOIRLab. 2023-06-14. Retrieved 2025-06-13.
  2. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  3. 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  4. ↑ 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.
  5. 1 2 3 4 5 6 7 8 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. ↑ 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.
  7. 1 2 3 4 Wang, Weilong; Gu, Shenghong; Wang, Xiaobin; Sun, Leilei; Lee, Byeong-Cheol; Kwok, Chi-Tai; Hui, Ho-Keung; Dou, Jiangpei; Xiang, Yue; Cao, Dongtao; Xu, Fukun (June 2025). "Observations and Studies on the Transiting Systems HAT-P-36, XO-2 and WASP-76". The Astronomical Journal. 169 (6): 342. Bibcode:2025AJ....169..342W. doi: 10.3847/1538-3881/add1de . ISSN   0004-6256.
  8. ↑ 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 .
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