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
[edit]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]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.096±0.005 MJ | 0.0566±0.0017 | 5.7214742(43)[6] | 0.06±0.04 | 89.560(78)[6]° | 0.96±0.03 RJ |
| c | ≥0.36±0.04 MJ | — | 1088+15 −16 |
0.28±0.07 | — | — |
References
[edit]- ^ 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.
- ^ a b c d e 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.
- ^ 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.
- ^ a b 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.
- ^ a b c d 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.
- ^ a b c d 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.
- ^ "WASP-107". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-12-01.
- ^ "WASP-107 c - NASA Science". 2020-12-17. Retrieved 2025-12-01.
