This page summarises the information held within TEPCat for the transiting planetary system NGTS-2. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2018MNRAS.481.4960R | |
| Date of discovery paper | 2018 / 5 / 27 | y / m / d |
| Data/telescope used for discovery | NGTS | |
| Right ascension | 14 20 29.49 | h m s |
| Declination | −31 12 06.7 | d m s |
| Right ascension (decimal) | 215.12288 | degrees |
| Declination (decimal) | -31.20186 | degrees |
| V-band apparent magnitude | 10.96 | mag |
| K-band apparent magnitude | 9.80 | mag |
| Transit duration | 0.1944 ( 4.666 ) | day hour |
| Transit depth | 1.1 | % |
| Time of mid-transit | 2457501.99114 ± 0.00050 | HJD or BJD |
| Orbital period | 4.5111204 ± 0.0000018 | days |
| Reference for orbital ephemeris | 2018MNRAS.481.4960R |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6450 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.09 ± 0.09 | dex |
| Stellar mass | 1.302 ± 0.034 | Msun |
| Stellar radius | 1.62 ± 0.09 | Rsun |
| Stellar logarithmic surface gravity | 4.135 ± 0.028 | c.g.s. |
| Stellar mean density | 0.309 ± 0.028 ( 0.436 ± 0.040 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0584 ± 0.0011 | AU |
| Planetary mass | 0.670 ± 0.089 ( 212 ± 28 ) | Mjup Mearth |
| Planetary radius | 1.536 ± 0.062 ( 17.22 ± 0.69 ) | Rjup Rearth |
| Planetary surface gravity | 6.5 +1.1 −0.9 2.81 +0.07 −0.06 | m/s2 log(cgs) |
| Planetary mean density | 0.183 ± 0.033 ( 0.243 ± 0.044 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1638 ± 29 | K |
| Reference of detailed study | 2018MNRAS.481.4960R |
| Reference | λ (degrees) |
|---|---|
| Anderson et al. (2018) | −11.3 ± 4.8 |
Page generated on 2024/09/10 John Southworth (Keele University, UK)