results
WASP-118 b

Total Reductions to Date: 10
Date Processed: 09/18/2023 at 00:07:19 (PDT)
Exoplanet Watch Ephemeris
Parameter | Value | Uncertainty |
---|---|---|
Orbital Period (Days) | 4.046050495180524 | 3.758160857370653e-07 |
Ephemeris (BJD_TDB) | 2459494.6226824066 | 0.00019101687682234565 |
Time saved (hours) | 0.0001 |
Assumed Priors
Parameter | Value | Uncertainty | Units | Reference |
---|---|---|---|---|
RA | 19.5505861 | decimal | ||
DEC | 2.7027847 | decimal | ||
Host Star Metallicity | 0.16 | 0.1 | Hay et al. 2016 | |
Host Star log(g) | 4.03 | 0.09 | Log10(cgs) | ExoFOP-TESS TOI |
Host Star Radius [R_Sun] | 1.7 | 0.03 | Sol | Gajdoš et al. 2019 |
Host Star Effective Temperature [K] | 6404.0 | 123.1 | K | ExoFOP-TESS TOI |
a/Rs | 6.776 | 0.006 | Gajdoš et al. 2019 | |
eccentricity | 0.0 | Močnik et al. 2017 | ||
inclination [degrees] | 89.86 | 0.18 | deg | Gajdoš et al. 2019 |
omega [degrees] | 0.0 | deg | Hay et al. 2016 | |
orbital period [days] | 4.0460496 | 1e-06 | day | Ivshina & Winn 2022 |
Rp | 14.94 | 0.27 | R_Earth | Gajdoš et al. 2019 |
Rp/Rs | 0.0806 | 0 | Gajdoš et al. 2019 | |
ephemeris [JD] | 2459450.11564 | 0.00026 | BJD-TDB | Ivshina & Winn 2022 |
Previously Published Mid-Transit Times
Value | Uncertainty | Units | Reference |
---|---|---|---|
2456787.81336 | 0.00065 | BJD, HJD | Gajdoš et al. 2019, Hay et al. 2016 |
2457394.72301 | 0.000193 | BJD | Petigura et al. 2018 |
2457423.044825 | 2e-05 | BJD | Močnik et al. 2017 |
2459450.11564 | 0.00026 | BJD-TDB | Ivshina & Winn 2022 |
2459474.39271 | 0.000637 | BJD | ExoFOP-TESS TOI |
Observations

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.332 | 0.018 |
Am2 | -0.223 | 0.013 |
a/Rs | 6.749 | 0.017 |
Rp/Rs | 0.1611 | 0.0069 |
ephemeris [JD] | 2459490.5969 | 0.0014 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.2260133418037085 | |
u1 | -3.980229913044103 | |
u2 | 4.3251776894768605 | |
u3 | -1.5709610537862955 | |
duration | 0.2164 | 0.0015 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
NA | Custom | 552.0 nm | 691.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | LGEC (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0002 | 0.0013 |
Am2 | 0 | |
a/Rs | 6.806 | 0.017 |
Rp/Rs | 0.08154 | 0.00097 |
ephemeris [JD] | 2459494.62242 | 0.00094 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.8342118608872546 | |
u1 | -5.100220447130983 | |
u2 | 4.9784793124442706 | |
u3 | -1.7124706520154191 | |
duration | 0.20499 | 0.00072 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0002 | 0.0014 |
Am2 | 0 | |
a/Rs | 6.755 | 0.017 |
Rp/Rs | 0.0808 | 0.001 |
ephemeris [JD] | 2459470.34635 | 0.00096 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.8353708021576347 | |
u1 | -5.10564108788104 | |
u2 | 4.9857773694904575 | |
u3 | -1.7155070094731801 | |
duration | 0.20747 | 0.00069 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0 | 0.0013 |
Am2 | 0 | |
a/Rs | 6.746 | 0.017 |
Rp/Rs | 0.07974 | 0.00092 |
ephemeris [JD] | 2459478.43962 | 0.00091 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.8354472365016785 | |
u1 | -5.10368154185358 | |
u2 | 4.982107020109814 | |
u3 | -1.713872640518734 | |
duration | 0.20747 | 0.00069 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0001 | 0.0014 |
Am2 | 0 | |
a/Rs | 6.78 | 0.017 |
Rp/Rs | 0.08211 | 0.00095 |
ephemeris [JD] | 2459490.57513 | 0.00095 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.8356043259849377 | |
u1 | -5.103951241734388 | |
u2 | 4.982218915133174 | |
u3 | -1.7138719251428762 | |
duration | 0.20636 | 0.00072 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0001 | 0.0014 |
Am2 | 0 | |
a/Rs | 6.806 | 0.017 |
Rp/Rs | 0.08189 | 0.00095 |
ephemeris [JD] | 2459450.1161 | 0.001 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.8356851977493864 | |
u1 | -5.104193009647186 | |
u2 | 4.9823491953260195 | |
u3 | -1.7138413091854323 | |
duration | 0.20526 | 0.00073 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0 | 0.0014 |
Am2 | 0 | |
a/Rs | 6.805 | 0.017 |
Rp/Rs | 0.08051 | 0.00095 |
ephemeris [JD] | 2459462.25346 | 0.00091 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.8342629547067197 | |
u1 | -5.100393700614882 | |
u2 | 4.9785652589674525 | |
u3 | -1.7124344388728874 | |
duration | 0.20526 | 0.0007 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0 | 0.0014 |
Am2 | 0 | |
a/Rs | 6.805 | 0.017 |
Rp/Rs | 0.07743 | 0.00096 |
ephemeris [JD] | 2459454.1612 | 0.001 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.835100597864548 | |
u1 | -5.104116670571874 | |
u2 | 4.9836943567649925 | |
u3 | -1.714678209794834 | |
duration | 0.20526 | 0.00071 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9998 | 0.0013 |
Am2 | 0 | |
a/Rs | 6.746 | 0.017 |
Rp/Rs | 0.08168 | 0.00095 |
ephemeris [JD] | 2459466.29856 | 0.00098 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.834641043555841 | |
u1 | -5.100938593706417 | |
u2 | 4.978859031177181 | |
u3 | -1.7125614068358237 | |
duration | 0.20748 | 0.00072 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9989 | 0.0013 |
Am2 | 0 | |
a/Rs | 6.804 | 0.018 |
Rp/Rs | 0.0828 | 0.0012 |
ephemeris [JD] | 2459474.3918 | 0.0012 |
eccentricity | 0.0 | |
inclination [degrees] | 89.86 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.0460496 | |
u0 | 2.835033202272942 | |
u1 | -5.103137829108589 | |
u2 | 4.982015477098409 | |
u3 | -1.7139107760249463 | |
duration | 0.20598 | 0.00068 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
I | Cousins I | 721.0 nm | 875.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
EPW | TESS (collaborate/publish) |