This page summarises the information held within TEPCat for the transiting planetary system TOI-1117b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2025MNRAS.541..919L | |
| Date of discovery paper | 2025 / 6 / 9 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 18 14 24.49 | h m s |
| Declination | −66 25 11.9 | d m s |
| Right ascension (decimal) | 273.60204 | degrees |
| Declination (decimal) | -66.41997 | degrees |
| V-band apparent magnitude | 11.02 | mag |
| K-band apparent magnitude | 9.39 | mag |
| Transit duration | 0.11 ( 2.6 ) | day hour |
| Transit depth | 0.05 | % |
| Time of mid-transit | 2459386.964 ± 0.004 | HJD or BJD |
| Orbital period | 2.22816 ± 0.00001 | days |
| Reference for orbital ephemeris | 2025MNRAS.541..919L |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5635 ± 62 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.136 ± 0.044 | dex |
| Stellar mass | 0.97 ± 0.02 | Msun |
| Stellar radius | 1.05 ± 0.03 | Rsun |
| Stellar logarithmic surface gravity | 4.41 ± 0.03 | c.g.s. |
| Stellar mean density | 0.91 ± 0.13 ( 1.28 ± 0.18 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0330 ± 0.0002 | AU |
| Planetary mass | 0.0280 ± 0.0030 ( 8.90 ± 0.95 ) | Mjup Mearth |
| Planetary radius | 0.219 +0.012 −0.011 ( 2.45 +0.13 −0.12 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 2.49 ± 0.45 ( 3.30 ± 0.60 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1538 ± 21 | K |
| Reference of detailed study | 2025MNRAS.541..919L |
TOI-1117b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/08/27 John Southworth (Keele University, UK)