This page summarises the information held within TEPCat for the transiting planetary system NGTS-8. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2020MNRAS.491.2834C | |
| Date of discovery paper | 2019 / 11 / 8 | y / m / d |
| Data/telescope used for discovery | NGTS | |
| Right ascension | 21 55 54.19 | h m s |
| Declination | −14 04 06.2 | d m s |
| Right ascension (decimal) | 328.97579 | degrees |
| Declination (decimal) | -14.06839 | degrees |
| V-band apparent magnitude | 13.68 | mag |
| K-band apparent magnitude | 11.64 | mag |
| Transit duration | 0.109 ( 2.62 ) | day hour |
| Transit depth | 1.5 | % |
| Time of mid-transit | 2457500.17830 ± 0.00073 | HJD or BJD |
| Orbital period | 2.49970 ± 0.00001 | days |
| Reference for orbital ephemeris | 2020MNRAS.491.2834C |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5241 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.24 ± 0.09 | dex |
| Stellar mass | 0.89 +0.05 −0.04 | Msun |
| Stellar radius | 0.98 ± 0.02 | Rsun |
| Stellar logarithmic surface gravity | 4.41 ± 0.03 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.010 +0.014 −0.010 | |
| Orbital semimajor axis | 0.035 ± 0.001 | AU |
| Planetary mass | 0.93 +0.04 −0.03 ( 295.64 +12.72 −9.54 ) | Mjup Mearth |
| Planetary radius | 1.09 ± 0.03 ( 12.22 ± 0.34 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.67 +0.06 −0.05 ( 0.889 +0.080 −0.066 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1345 ± 19 | K |
| Reference of detailed study | 2020MNRAS.491.2834C |
NGTS-8 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)