This page summarises the information held within TEPCat for the transiting planetary system NGTS-31. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2025MNRAS.536.2011V | |
| Date of discovery paper | 2025 / 1 / 7 | y / m / d |
| Data/telescope used for discovery | NGTS | |
| Right ascension | 05 21 41.11 | h m s |
| Declination | −38 39 24.5 | d m s |
| Right ascension (decimal) | 80.42129 | degrees |
| Declination (decimal) | -38.65681 | degrees |
| V-band apparent magnitude | 13.44 | mag |
| K-band apparent magnitude | 11.78 | mag |
| Transit duration | 0.15 ( 3.6 ) | day hour |
| Transit depth | 1.2 | % |
| Time of mid-transit | 2459039.1615 ± 0.0004 | HJD or BJD |
| Orbital period | 4.162734 ± 0.000004 | days |
| Reference for orbital ephemeris | 2025MNRAS.536.2011V |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5710 ± 70 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.00 ± 0.04 | dex |
| Stellar mass | 0.96 +0.11 −0.05 | Msun |
| Stellar radius | 1.70 +0.20 −0.21 | Rsun |
| Stellar logarithmic surface gravity | 4.43 +0.14 −0.16 | c.g.s. |
| Stellar mean density | 0.414 +0.015 −0.013 ( 0.584 +0.021 −0.018 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.064 ± 0.008 | AU |
| Planetary mass | 1.12 ± 0.12 ( 356 ± 38 ) | Mjup Mearth |
| Planetary radius | 1.61 ± 0.16 ( 18.0 ± 1.8 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.23 +0.08 −0.06 ( 0.305 +0.106 −0.080 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1410 ± 20 | K |
| Reference of detailed study | 2025MNRAS.536.2011V |
NGTS-31 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)