results
WASP-157 b
Total Reductions to Date: 4
Date Processed: 09/24/2023 at 00:07:22 (PDT)
Exoplanet Watch Ephemeris
| Parameter | Value | Uncertainty |
|---|---|---|
| Orbital Period (Days) | 3.9516186736999868 | 4.081539160139689e-06 |
| Ephemeris (BJD_TDB) | 2460035.7914563697 | 0.002865240462118109 |
| Time saved (hours) | - |
Assumed Priors
| Parameter | Value | Uncertainty | Units | Reference |
|---|---|---|---|---|
| RA | 201.6551525 | decimal | ||
| DEC | -8.3176353 | decimal | ||
| Host Star Metallicity | 0.34 | 0.09 | Kokori et al. 2021 | |
| Host Star log(g) | 4.5 | 0.2 | Log10(cgs) | Kokori et al. 2021 |
| Host Star Radius [R_Sun] | 1.13 | 0.05 | Sol | Kokori et al. 2021 |
| Host Star Effective Temperature [K] | 5838.0 | 140.0 | K | Kokori et al. 2021 |
| a/Rs | 10.31 | 0.35 | Kruse et al. 2019 | |
| eccentricity | 0.0 | Močnik et al. 2016 | ||
| inclination [degrees] | 85.09 | 0.304 | deg | Mayo et al. 2018 |
| omega [degrees] | 0.0 | deg | Kokori et al. 2021 | |
| orbital period [days] | 3.951605 | 3e-06 | day | Kokori et al. 2021 |
| Rp | 11.81 | 0.91 | R_Earth | Kruse et al. 2019 |
| Rp/Rs | 0.0873 | 0 | Kruse et al. 2019 | |
| ephemeris [JD] | 2457265.70719 | 9e-05 | BJD-TDB | Kokori et al. 2021 |
Previously Published Mid-Transit Times
| Value | Uncertainty | Units | Reference |
|---|---|---|---|
| 2457222.238635 | 0.000193 | BJD | Livingston et al. 2018, Petigura et al. 2018 |
| 2457257.803194 | 8.8e-05 | BJD | Močnik et al. 2016 |
| 2457265.70719 | 9e-05 | BJD-TDB | Kokori et al. 2021 |
Observations
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.001 | 0.023 |
| Am2 | 0.001 | 0.011 |
| a/Rs | 11.67 | 0.97 |
| Rp/Rs | 0.166 | 0.048 |
| ephemeris [JD] | 2459387.714 | 0.011 |
| eccentricity | 0.0 | |
| inclination [degrees] | 85.09 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.951605 | |
| u0 | 2.2833537684154224 | |
| u1 | -4.003360123450728 | |
| u2 | 4.226252802027944 | |
| u3 | -1.5062463840165647 | |
| duration | 0 | 0 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| CBB | Astrodon ExoPlanet-BB | 500.0 nm | 1000.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | LPAC (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.0113 | 0.0068 |
| Am2 | -0.005 | 0.0053 |
| a/Rs | 9.05 | 0.33 |
| Rp/Rs | 0.116 | 0.011 |
| ephemeris [JD] | 2460031.8304 | 0.004 |
| eccentricity | 0.0 | |
| inclination [degrees] | 85.09 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.951605 | |
| u0 | 2.2069723955895273 | |
| u1 | -3.791204816201735 | |
| u2 | 4.017821906482366 | |
| u3 | -1.4335894259999464 | |
| duration | 0.1123 | 0.0083 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| RJ | Johnson R | 590.0 nm | 810.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | MBEB (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.0432 | 0.0074 |
| Am2 | -0.022 | 0.011 |
| a/Rs | 8.57 | 0.94 |
| Rp/Rs | 0.14 | 0.024 |
| ephemeris [JD] | 2460031.8332 | 0.0075 |
| eccentricity | 0.0 | |
| inclination [degrees] | 85.09 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.951605 | |
| u0 | 1.6705675891294347 | |
| u1 | -2.908352792315367 | |
| u2 | 3.5822603249412337 | |
| u3 | -1.3444750683754627 | |
| duration | 0.103 | 0.011 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| V | Johnson V | 502.8 nm | 586.8 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | CCHD (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 0.9989 | 0.0081 |
| Am2 | 0.0027 | 0.0053 |
| a/Rs | 10.9 | 0.6 |
| Rp/Rs | 0.159 | 0.024 |
| ephemeris [JD] | 2460035.797 | 0.0041 |
| eccentricity | 0.0 | |
| inclination [degrees] | 85.09 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 3.951605 | |
| u0 | 1.9173753694544202 | |
| u1 | -3.4164879725334996 | |
| u2 | 3.9456468939434273 | |
| u3 | -1.4465342320696273 | |
| duration | 0 | 0 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| CV | MObs CV | 350.0 nm | 850.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | MBEB (collaborate/publish) |
