This page summarises the information held within TEPCat for the transiting planetary system NGTS-9. 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 | 09 27 40.96 | h m s |
| Declination | −19 20 50.3 | d m s |
| Right ascension (decimal) | 141.92067 | degrees |
| Declination (decimal) | -19.34731 | degrees |
| V-band apparent magnitude | 12.80 | mag |
| K-band apparent magnitude | 11.45 | mag |
| Transit duration | 0.085 ( 2.04 ) | day hour |
| Transit depth | 0.5 | % |
| Time of mid-transit | 2457671.8109 ± 0.0027 | HJD or BJD |
| Orbital period | 4.43527 ± 0.00002 | days |
| Reference for orbital ephemeris | 2020MNRAS.491.2834C |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6330 ± 130 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.31 ± 0.15 | dex |
| Stellar mass | 1.34 ± 0.05 | Msun |
| Stellar radius | 1.38 ± 0.04 | Rsun |
| Stellar logarithmic surface gravity | 4.37 ± 0.20 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.060 +0.076 −0.052 | |
| Orbital semimajor axis | 0.058 +0.003 −0.002 | AU |
| Planetary mass | 2.90 ± 0.17 ( 921 ± 54 ) | Mjup Mearth |
| Planetary radius | 1.07 ± 0.06 ( 11.99 ± 0.67 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 2.21 +0.40 −0.37 ( 2.93 +0.53 −0.49 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1448 ± 36 | K |
| Reference of detailed study | 2020MNRAS.491.2834C |
NGTS-9 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)