TOI-1117
The location of TOI-1117 in the sky, the star is located in the white circle. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pavo[1] |
| Right ascension | 18h 14m 24.534s[2] |
| Declination | −66° 25′ 11.31″[2] |
| Apparent magnitude (V) | 11.016 |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Astrometry | |
| Radial velocity (Rv) | −24.73±0.24[2] km/s |
| Proper motion (μ) | RA: −15.491 mas/yr[2] Dec.: −38.741 mas/yr[2] |
| Parallax (π) | 5.9951±0.0154 mas[2] |
| Distance | 544 ± 1 ly (166.8 ± 0.4 pc) |
| Details[3] | |
| Mass | 0.97±0.02 M☉ |
| Radius | 1.05±0.03 R☉ |
| Luminosity | 0.363 L☉ |
| Surface gravity (log g) | 4.41±0.03 cgs |
| Temperature | 5635±62 K |
| Metallicity [Fe/H] | +0.136±0.044 dex |
| Rotation | 40 days |
| Rotational velocity (v sin i) | 1.32±0.04 km/s |
| Age | 4.42±1.50[4] Gyr |
| Other designations | |
| TOI-1117, TIC 295541511, 2MASS J18142452-6625113[5] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
TOI-1117 is a single G-type star in the constellation of Pavo.[6] 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.[3] 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.[7] The object is drifting towards the Sun with a radial velocity of −24.73 km/s.[8]
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.[9]
None of these planets orbit in the habitable zone; all are believed to be sub-Neptune planets.[10][11][12]
| 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
References
- ^ 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 f 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.
- ^ a b "TOI-1117". NASA Exoplanet Archive. Retrieved 2025-10-09.
- ^ De Laverny, Patrick; Ligi, Roxanne; Crida, Aurélien; Recio-Blanco, Alejandra; Palicio, Pedro A. (2025). "The Gaia spectroscopic catalogue of exoplanets and host stars". Astronomy & Astrophysics. 699: A100. arXiv:2505.22205. Bibcode:2025A&A...699A.100D. doi:10.1051/0004-6361/202554739.
- ^ "TOI-1117". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-10-10.
- ^ Walter, Filip (2025-06-29). "TOI-1117 (Transiting exoplanet)". VarAstro. Retrieved 2025-10-10.
- ^ "★ TOI 1117". Stellar Catalog. Retrieved 2025-10-09.
- ^ "TOI-1117". SIMBAD. Retrieved 2025-10-09.
- ^ Lockley, Isobel S.; Armstrong, David J.; Fernández, Jorge Fernández; Millholland, Sarah; Knierim, Henrik; Mena, Elisa Delgado; Sousa, Sergio; Collins, Karen A.; Watkins, Cristilyn N. (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. arXiv:2506.05521. Bibcode:2025MNRAS.541..919L. doi:10.1093/mnras/staf939.
- ^ "⬤ Exoplanet TOI 1117 b". Stellar Catalog. Retrieved 2025-10-09.
- ^ "⬤ Exoplanet TOI 1117 c". Stellar Catalog. Retrieved 2025-10-09.
- ^ "⬤ Exoplanet TOI 1117 d". Stellar Catalog. Retrieved 2025-10-09.