This page summarises the information held within TEPCat for the transiting planetary system WASP-157. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2016PASP..128l4403M | |
| Date of discovery paper | 2016 / 3 / 18 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 13 26 37.25 | h m s |
| Declination | −08 19 03.2 | d m s |
| Right ascension (decimal) | 201.65521 | degrees |
| Declination (decimal) | -8.31756 | degrees |
| V-band apparent magnitude | 12.91 | mag |
| K-band apparent magnitude | 10.76 | mag |
| Transit duration | 0.0811 ( 1.946 ) | day hour |
| Transit depth | 0.7 | % |
| Time of mid-transit | 2457257.803194 ± 0.000088 | HJD or BJD |
| Orbital period | 3.9516205 ± 0.0000040 | days |
| Reference for orbital ephemeris | 2016PASP..128l4403M |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5840 ± 140 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.34 ± 0.09 | dex |
| Stellar mass | 1.26 ± 0.12 | Msun |
| Stellar radius | 1.134 ± 0.051 | Rsun |
| Stellar logarithmic surface gravity | 4.5 ± 0.2 | c.g.s. |
| Stellar mean density | 0.86 ± 0.14 ( 1.21 ± 0.20 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.11 −0.0 | |
| Orbital semimajor axis | 0.0529 ± 0.0017 | AU |
| Planetary mass | 0.574 ± 0.093 ( 182 ± 29 ) | Mjup Mearth |
| Planetary radius | 1.065 ± 0.047 ( 11.94 ± 0.53 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.48 ± 0.10 ( 0.64 ± 0.13 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1339 ± 93 | K |
| Reference of detailed study | 2016PASP..128l4403M |
WASP-157 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)