| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
WASP-157 DR2 3630269399833507200 J13263727-0819033 |
||||
| RA | 13:26:37.2697 | DEC | -08:19:03.351 | ||
| Parallax 2.966 mas |
P.M. RA -31.728 mas/y |
P.M. DEC -8.74 mas/y |
|||
| MagV 12.91 |
MagR* 11.954 |
MagI* 12.163 |
MagJ 11.11 |
MagH 10.799 |
MagK 10.764 |
| MagG 12.182 |
MagGBP 12.544 |
MagGRP 11.678 |
|||
| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2457826.835939 ± 4.2e-05 BJDTDB |
|||||
| Period 3.95161598 ± 3.2e-07 days |
|||||
| Transit Parameters | |||||
| Močnik et al. 2016 | |||||
| Rp/Rs 0.0944 ± 0.0019 |
a/Rs 10.04 +0.32 -0.32 |
i 84.93 +0.45 -0.21 deg |
|||
| e - |
ω - deg |
||||
| DepthR* 8.24 mmag |
Duration* 1.94 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Močnik et al. 2016 | |||||
| Teff 5838.0 +140.0 -140.0 K |
Log(g) 4.5 +0.2 -0.2 cm/s2 |
Fe/H 0.34 +0.09 -0.09 dex |
|||
| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 9.67" | ||||
| Total Observations (Recent) | 33 (5) | ||||
| O-C | -0.23 ± 1.3 minutes | ||||
| ExoClock Observations (Recent) | 14 (5) | ||||
| Space Observations (Recent) | 19 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | 0.095401 ± 0.0001 | ||||
| TESS Rp/Rs | - | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| WASP-157b (LOW) 2026-03-11 | Giovanni Calapai Home Astronomical Observatory | Celestron 11 Schmidt-Cassegrain Atik 314L+ / AstrodonExoPlanet-BB / 90.0 | 0.26 ± 2.88 | |
| WASP-157b (LOW) 2025-07-13 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 2.96 ± 2.3 | |
| WASP-157b (LOW) 2025-05-02 | Stefan Brenner NOE Volkssternwarte AST | Martini-Truss mit Zambuto 11“ f/4,7 Omegon veTEC 571 C / Clear / 180.0 | -2.82 ± 6.62 | |
| WASP-157b (LOW) 2025-05-02 | Kevin Johnson Holbrook Observatory | Meade LX50 10" Atik 383L+ / Lum / 90.0 | -7.57 ± 4.61 | |
| WASP-157b (LOW) 2025-04-17 | Eric Soto Cerro Tololo Observatory | PlaneWave Delta Rho 350 QHY600 CMOS / rpr / 60.0 | -1.43 ± 2.16 | |
| WASP-157b (LOW) 2023-04-17 | Antelm Ginard IAC | IAC Telescope CAMELOT2 / R / 151.0 | 1.89 ± 1.35 | |
| WASP-157b (LOW) 2023-04-13 | Magdalena Szkudlarek Deep Sky Chile - ROTUZ | PlaneWave CDK 20 QHY268M pro / R / 42.0 | -2.04 ± 2.02 | |
| WASP-157b (LOW) 2023-03-28 | Bryan Martin Tiger Butte Observatory Remote | AG Optical IDK ZWO ASI 294 / R / 180.0 | -3.25 ± 6.62 | |
| WASP-157b (LOW) 2022-06-04 | David Arnot OSO PIRATE | PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 60.0 | -4.98 ± 2.45 | |
| WASP-157b (LOW) 2022-05-20 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / R / 60.0 | -2.01 ± 2.3 | |
| WASP-157b (LOW) 2022-02-26 | Michael Irzyk Melun | C14 H694 / Clear / 30.0 | -6.71 ± 2.88 | |
| WASP-157b (LOW) 2021-04-23 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0 | -1.31 ± 2.16 | |
| WASP-157b (LOW) 2020-05-15 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / V / 120.0 | -3.63 ± 3.31 | |
| WASP-157b (LOW) 2020-02-18 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / V / 120.0 | -7.01 ± 5.76 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| WASP-157b (LOW) 2018-05-07 | K2 | 0.23 ± 0.19 | ||
| WASP-157b (LOW) 2018-04-25 | K2 | -0.09 ± 0.26 | ||
| WASP-157b (LOW) 2018-04-13 | K2 | -0.13 ± 0.1 | ||
| WASP-157b (LOW) 2018-04-01 | K2 | 0.12 ± 1.01 | ||
| WASP-157b (LOW) 2018-03-28 | K2 | 0.26 ± 0.13 | ||
| WASP-157b (LOW) 2018-03-24 | K2 | 0.1 ± 0.19 | ||
| WASP-157b (LOW) 2018-03-20 | K2 | -0.42 ± 0.24 | ||
| WASP-157b (LOW) 2015-09-23 | K2 | -0.41 ± 0.71 | ||
| WASP-157b (LOW) 2015-08-31 | K2 | -0.2 ± 0.2 | ||
| WASP-157b (LOW) 2015-08-27 | K2 | -0.44 ± 0.39 | ||
| WASP-157b (LOW) 2015-08-23 | K2 | 0.31 ± 0.24 | ||
| WASP-157b (LOW) 2015-08-19 | K2 | -0.09 ± 0.32 | ||
| WASP-157b (LOW) 2015-08-15 | K2 | 0.54 ± 0.3 | ||
| WASP-157b (LOW) 2015-08-07 | K2 | 0.33 ± 0.3 | ||
| WASP-157b (LOW) 2015-07-30 | K2 | -0.22 ± 0.4 | ||
| WASP-157b (LOW) 2015-07-26 | K2 | -0.08 ± 0.17 | ||
| WASP-157b (LOW) 2015-07-22 | K2 | 0.43 ± 0.43 | ||
| WASP-157b (LOW) 2015-07-18 | K2 | -0.06 ± 0.24 | ||
| WASP-157b (LOW) 2015-07-14 | K2 | -0.18 ± 0.2 | ||