Astronomy:TOI-1117
TOI-1117 is a single G-type star in the constellation of Pavo.[1] It has approximately 0.97 times the mass and 1.05 times the radius of the Sun, with a surface temperature of 5,635±62 K and a spectral type of G7.[2] TOI-1117 is too faint to be visible to the naked eye. Based upon parallax measurements, it is located 544 light-years (166.8 parsecs) from the Sun.[3] The object is drifting towards the Sun with a radial velocity of −24.73 km/s.[4]
Planetary system
In June of 2025, three exoplanets (b, c and d) were identified via the radial velocity method. An additional planet was discovered using the transit technique.[5]
None of these planets orbit in the habitable zone; all are believed to be sub-Neptune planets.[6][7][8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 8.90+0.95 −0.96 M⊕ |
0.0330±0.0002 | 2.22816±0.00001 | 0 | — | 2.46+0.13 −0.12 R⊕ |
| c | 8.78+1.19 −1.21 M⊕ |
0.0534±0.0003 | 4.579±0.004 | 0 | — | — |
| d | 10.71+1.59 −1.58 M⊕ |
0.0817±0.0006 | 8.665±0.011 | 0 | — | — |
See also
- List of exoplanets discovered in 2025
- Exoplanet
- sub-Neptune
- Main Sequence Star
References
- ↑ Walter, Filip (2025-06-29). "TOI-1117 (Transiting exoplanet)". https://var.astro.cz/en/Stars/100559.
- ↑ "TOI-1117". https://exoplanetarchive.ipac.caltech.edu/overview/TOI-1117#star_TOI-1117_collapsible.
- ↑ "★ TOI 1117" (in en). https://www.stellarcatalog.com/stars/toi-1117.
- ↑ "TOI-1117". https://simbad.cds.unistra.fr/simbad/sim-id.
- ↑ Lockley, Isobel S.; Armstrong, David J.; Fernández, Jorge Fernández; Millholland, Sarah; Knierim, Henrik; Mena, Elisa Delgado; Sousa, Sergio; Collins, Karen A. et al. (2025-06-05). "The TOI-1117 Multi-planetary System: 3 sub-Neptunes, 1 in both the Neptunian Desert and Radius Valley". Monthly Notices of the Royal Astronomical Society 541 (2): 919. doi:10.1093/mnras/staf939. Bibcode: 2025MNRAS.541..919L.
- ↑ "⬤ Exoplanet TOI 1117 b" (in en). https://www.stellarcatalog.com/exoplanet.php?planetID=101997.
- ↑ "⬤ Exoplanet TOI 1117 c" (in en). https://www.stellarcatalog.com/exoplanet.php?planetID=101998.
- ↑ "⬤ Exoplanet TOI 1117 d" (in en). https://www.stellarcatalog.com/exoplanet.php?planetID=101999.
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