This page summarises the information held within TEPCat for the transiting planetary system NGTS-38. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | arXiv:2602.12977 | |
| Date of discovery paper | 2026 / 2 / 16 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 07 14 51.52 | h m s |
| Declination | −29 25 49.9 | d m s |
| Right ascension (decimal) | 108.71467 | degrees |
| Declination (decimal) | -29.43053 | degrees |
| V-band apparent magnitude | 10.23 | mag |
| K-band apparent magnitude | 8.94 | mag |
| Transit duration | 0.620 ( 14.88 ) | day hour |
| Transit depth | 0.3 | % |
| Time of mid-transit | 2459209.2286 ± 0.0031 | HJD or BJD |
| Orbital period | 180.52791 ± 0.00038 | days |
| Reference for orbital ephemeris | arXiv:2602.12977 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6310 ± 129 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.33 ± 0.09 | dex |
| Stellar mass | 1.46 ± 0.09 | Msun |
| Stellar radius | 1.88 ± 0.08 | Rsun |
| Stellar logarithmic surface gravity | 4.06 ± 0.02 | c.g.s. |
| Stellar mean density | 0.214 +0.025 −0.021 ( 0.302 +0.035 −0.030 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.308 ± 0.011 | |
| Orbital semimajor axis | 0.695 ± 0.036 | AU |
| Planetary mass | 4.78 +0.40 −0.37 ( 15195 +1272 −1176 ) | Mjup Mearth |
| Planetary radius | 1.081 ± 0.047 ( 12.12 ± 0.53 ) | Rjup Rearth |
| Planetary surface gravity | 95.5 +6.8 −6.4 3.98 +0.03 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 3.54 +0.72 −0.59 ( 4.70 +0.96 −0.78 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 458 ± 11 | K |
| Reference of detailed study | arXiv:2602.12977 |
NGTS-38 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/02/19 John Southworth (Keele University, UK)