WASP-59

Last updated
WASP-59
Observation data
Epoch J2000       Equinox J2000
Constellation Pegasus [1]
Right ascension 23h 18m 29.54747s [2]
Declination +24° 53′ 21.4386″ [2]
Apparent magnitude  (V)12.78 [3]
Characteristics
Evolutionary stage Main sequence [2]
Spectral type K5V [4]
Astrometry
Radial velocity (Rv)−57.07±0.44 [2] km/s
Proper motion (μ)RA: −33.675 mas/yr [2]
Dec.: −2.675 mas/yr [2]
Parallax (π)8.6178±0.0140  mas [2]
Distance 378.5 ± 0.6  ly
(116.0 ± 0.2  pc)
Details [5]
Mass 0.719±0.035  M☉
Radius 0.613±0.044  R☉
Surface gravity (log g)4.72±0.06 [4]   cgs
Temperature 4650±150  K
Metallicity [Fe/H]-0.15±0.11  dex
Rotational velocity (v sin i)2.3±1.5 km/s
Age 7±7  Gyr
Other designations
TOI-5969, TIC 91051152, WASP-59, 2MASS J23182955+2453214 [3]
Database references
SIMBAD data
Exoplanet Archive data

WASP-59 is a K-type main-sequence star about 379 light-years away in the constellation Pegasus. The star's age is essentially unconstrained by observations. WASP-59 is slightly depleted in heavy elements, having 70% of the solar abundance of iron. [5] The star produces extremely low levels of ultraviolet light, indicating an absence of flare activity. [6]

A multiplicity survey in 2015 did not detect any stellar companions to WASP-59. [7]

Planetary system

In 2012 a transiting hot Jupiter planet, WASP-59b, was detected on a tight, mildly eccentric orbit. [4]

Its equilibrium temperature is 670±35  K . [4] The planet is unusually dense for a gas giant, representing an outlier on the mass-radius diagram. [8]

The WASP-59 planetary system [5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b0.857+0.046
−0.047  MJ 		0.0697±0.00117.919585±0.0000100.101+0.046
−0.048		89.27±0.52° 0.775±0.068  RJ

References

  1. ↑ 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.
  2. 1 2 3 4 5 6 7 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.
  3. 1 2 "WASP-59". SIMBAD . Centre de données astronomiques de Strasbourg.
  4. 1 2 3 4 Hébrard, G.; Collier Cameron, A.; Brown, D. J. A.; Díaz, R. F.; Faedi, F.; Smalley, B.; Anderson, D. R.; Armstrong, D.; Barros, S. C. C.; Bento, J.; Bouchy, F.; Doyle, A. P.; Enoch, B.; Gómez Maqueo Chew, Y.; Hébrard, É. M.; Hellier, C.; Lendl, M.; Lister, T. A.; Maxted, P. F. L.; McCormac, J.; Moutou, C.; Pollacco, D.; Queloz, D.; Santerne, A.; Skillen, I.; Southworth, J.; Tregloan-Reed, J.; Triaud, A. H. M. J.; Udry, S.; et al. (2012), "WASP-52b, WASP-58b, WASP-59b, and WASP-60b: four new transiting close-in giant planets", Astronomy & Astrophysics, 549: A134, arXiv: 1211.0810 , doi:10.1051/0004-6361/201220363, S2CID   54502046
  5. 1 2 3 Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; 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 & Astrophysics, 602: A107, arXiv: 1704.00373 , Bibcode:2017A&A...602A.107B, doi:10.1051/0004-6361/201629882, S2CID   118923163
  6. ↑ Shkolnik, Evgenya L. (2013), "An Ultraviolet Investigation of Activity on Exoplanet Host Stars", The Astrophysical Journal, 766 (1): 9, arXiv: 1301.6192 , Bibcode:2013ApJ...766....9S, doi:10.1088/0004-637X/766/1/9, S2CID   118415788
  7. ↑ Wöllert, Maria; Brandner, Wolfgang; Bergfors, Carolina; Henning, Thomas (2015), "A Lucky Imaging search for stellar companions to transiting planet host stars", Astronomy & Astrophysics, 575: A23, arXiv: 1507.01938 , Bibcode:2015A&A...575A..23W, doi:10.1051/0004-6361/201424091, S2CID   119250579
  8. ↑ Southworth, J.; Mancini, L.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dominik, M.; Gerner, T.; Hinse, T. C.; Jorgensen, U. G.; Kains, N.; Ricci, D.; Schafer, S.; Schonebeck, F.; Tregloan-Reed, J.; Alsubai, K. A.; Bozza, V.; Chen, G.; Dodds, P.; Dreizler, S.; Fang, X. -S.; Finet, F.; Gu, S. -H.; Hardis, S.; Harpsoe, K.; Henning, Th.; Hundertmark, M.; Jessen-Hansen, J.; Kerins, E.; Kjeldsen, H.; et al. (2013), "High-precision photometry by telescope defocussing. V. WASP-15 and WASP-16", Monthly Notices of the Royal Astronomical Society, 434 (2): 1300–1308, arXiv: 1306.3509 , doi: 10.1093/mnras/stt1089 , S2CID   53645606
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