This page summarises the information held within TEPCat for the transiting planetary system NGTS-4. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019MNRAS.486.5094W | |
| Date of discovery paper | 2018 / 9 / 4 | y / m / d |
| Data/telescope used for discovery | NGTS | |
| Right ascension | 05 58 23.76 | h m s |
| Declination | −30 48 42.5 | d m s |
| Right ascension (decimal) | 89.59900 | degrees |
| Declination (decimal) | -30.81181 | degrees |
| V-band apparent magnitude | 13.14 | mag |
| K-band apparent magnitude | 11.07 | mag |
| Transit duration | 0.075 ( 1.80 ) | day hour |
| Transit depth | 0.13 | % |
| Time of mid-transit | 2457607.9975 ± 0.0034 | HJD or BJD |
| Orbital period | 1.3373508 ± 0.0000008 | days |
| Reference for orbital ephemeris | 2019MNRAS.486.5094W |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5143 ± 100 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.28 ± 0.10 | dex |
| Stellar mass | 0.75 ± 0.02 | Msun |
| Stellar radius | 0.84 ± 0.01 | Rsun |
| Stellar logarithmic surface gravity | 4.5 ± 0.1 | c.g.s. |
| Stellar mean density | 1.27 ± 0.10 ( 1.79 ± 0.14 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.68 −0.0 | |
| Orbital semimajor axis | 0.019 ± 0.005 | AU |
| Planetary mass | 0.065 ± 0.009 ( 20.7 ± 2.9 ) | Mjup Mearth |
| Planetary radius | 0.284 ± 0.023 ( 3.18 ± 0.26 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.44 ± 0.12 ( 1.91 ± 0.16 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2019MNRAS.486.5094W |
NGTS-4 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)