WASP-107

Last updated
WASP-107
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Virgo [1]
Right ascension 12h 33m 32.844s [2]
Declination −10° 08′ 46.23″ [2]
Apparent magnitude  (V)11.47 [3]
Characteristics
Evolutionary stage Main sequence [4]
Spectral type K6 [5] or K7V [4]
Astrometry
Radial velocity (Rv)+14.06±0.20 [2] km/s
Proper motion (μ)RA: −96.665 mas/yr [2]
Dec.: −9.372 mas/yr [2]
Parallax (π)15.5277±0.0260  mas [2]
Distance 210.0 ± 0.4  ly
(64.4 ± 0.1  pc)
Details [5]
Mass 0.683+0.017
−0.016  M☉
Radius 0.67±0.02  R☉
Luminosity 0.132±0.003  L☉
Surface gravity (log g)4.633±0.012  cgs
Temperature 4425±70  K
Metallicity [Fe/H]+0.02±0.09  dex
Rotation 17.1±1.0  d [6]
Rotational velocity (v sin i)0.507+0.072
−0.086 [6]  km/s
Age 3.4±0.7  Gyr
Other designations
K2-235, EPIC 228724232, TOI-1905, TIC 429302040, WASP-107, TYC 5530-1795-1, 2MASS J12333284-1008461, GALAH 160403003601196 [7]
Database references
SIMBAD data
Exoplanet Archive data

WASP-107 (also known as TOI-1905) is a K6V-type main sequence star located 210 light-years from Earth in the constellation of Virgo. It has a mass of 0.68 solar masses with a radius of 0.67 solar radii. It has a temperature of 4425 Kelvin with a brightness of 0.132 solar luminosity and is around 3.4 billion years old. [5]

Planetary system

There are currently two exoplanets that have been discovered orbiting WASP-107; they are WASP-107b, a warm super-Neptunian planet, and WASP-107c, a gas giant planet. [8]

The WASP-107 planetary system [5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.096±0.005  MJ 0.0566±0.00175.7214742(43) [6] 0.06±0.0489.560(78) [6] ° 0.96±0.03  RJ
c≥0.36±0.04  MJ —1088+15
−16		0.28±0.07——

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 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. ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355. Bibcode:2000A&A...355L..27H.
  4. 1 2 Dressing, Courtney D.; Hardegree-Ullman, Kevin; Schlieder, Joshua E.; Newton, Elisabeth R.; Vanderburg, Andrew; Feinstein, Adina D.; Duvvuri, Girish M.; Arnold, Lauren; Bristow, Makennah; Thackeray, Beverly; Schwab Abrahams, Ellianna; Ciardi, David R.; Crossfield, Ian J. M.; Yu, Liang; Martinez, Arturo O.; Christiansen, Jessie L.; Crepp, Justin R.; Isaacson, Howard (2019). "Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars. IV. Updated Properties for 86 Cool Dwarfs Observed during Campaigns 1-17". The Astronomical Journal. 158 (2): 87. arXiv: 1905.11457 . Bibcode:2019AJ....158...87D. doi: 10.3847/1538-3881/ab2895 .
  5. 1 2 3 4 Piaulet, Caroline; Benneke, Björn; et al. (February 2021). "WASP-107b's Density Is Even Lower: A Case Study for the Physics of Planetary Gas Envelope Accretion and Orbital Migration". The Astronomical Journal . 161 (2): 70. arXiv: 2011.13444 . Bibcode:2021AJ....161...70P. doi: 10.3847/1538-3881/abcd3c .
  6. 1 2 3 4 Bourrier, V.; Attia, M.; et al. (January 2023). "DREAM: I. Orbital architecture orrery". Astronomy & Astrophysics . 669: A63. arXiv: 2301.07727 . Bibcode:2023A&A...669A..63B. doi: 10.1051/0004-6361/202245004 .
  7. ↑ "WASP-107". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-12-01.
  8. ↑ "WASP-107 c - NASA Science". 2020-12-17. Retrieved 2025-12-01.
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