This page summarises the information held within TEPCat for the transiting planetary system NGTS-17. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2021MNRAS.504.6018T | |
| Date of discovery paper | 2021 / 3 / 19 | y / m / d |
| Data/telescope used for discovery | NGTS | |
| Right ascension | 04 51 36.14 | h m s |
| Declination | −34 13 34.4 | d m s |
| Right ascension (decimal) | 72.90058 | degrees |
| Declination (decimal) | -34.22622 | degrees |
| V-band apparent magnitude | 14.33 | mag |
| K-band apparent magnitude | 12.72 | mag |
| Transit duration | 0.1413 ( 3.391 ) | day hour |
| Transit depth | 1.0 | % |
| Time of mid-transit | 2458442.5219 ± 0.0009 | HJD or BJD |
| Orbital period | 3.24253 ± 0.00001 | days |
| Reference for orbital ephemeris | 2021MNRAS.504.6018T |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5650 ± 100 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.15 ± 0.1 | dex |
| Stellar mass | 1.025 +0.034 −0.033 | Msun |
| Stellar radius | 1.337 ± 0.042 | Rsun |
| Stellar logarithmic surface gravity | 4.00 ± 0.12 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0391 ± 0.0043 | AU |
| Planetary mass | 0.76 +0.20 −0.16 ( 241 +63 −50 ) | Mjup Mearth |
| Planetary radius | 1.24 ± 0.11 ( 13.9 ± 1.2 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.38 +0.20 −0.13 ( 0.50 +0.27 −0.17 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1457 ± 50 | K |
| Reference of detailed study | 2021MNRAS.504.6018T |
NGTS-17 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/04/12 John Southworth (Keele University, UK)