results
WASP-13 b

Total Reductions to Date: 8
Date Processed: 09/18/2023 at 00:07:19 (PDT)
Exoplanet Watch Ephemeris
Parameter | Value | Uncertainty |
---|---|---|
Orbital Period (Days) | 4.353011295856238 | 3.729368211397485e-07 |
Ephemeris (BJD_TDB) | 2459606.4033564064 | 0.000221533313106838 |
Time saved (hours) | - |
Assumed Priors
Parameter | Value | Uncertainty | Units | Reference |
---|---|---|---|---|
RA | 140.1029654 | decimal | ||
DEC | 33.8823291 | decimal | ||
Host Star Metallicity | 0.0 | 0.2 | Patel & Espinoza 2022 | |
Host Star log(g) | 4.06 | 0.1 | Log10(cgs) | Patel & Espinoza 2022 |
Host Star Radius [R_Sun] | 1.37 | 0.15 | Sol | Patel & Espinoza 2022 |
Host Star Effective Temperature [K] | 5950.0 | 70.0 | K | Patel & Espinoza 2022 |
a/Rs | 7.75 | 0.23 | Patel & Espinoza 2022 | |
eccentricity | 0.016 | Bonomo et al. 2017 | ||
inclination [degrees] | 84.88 | 0.45 | deg | Bonomo et al. 2017 |
omega [degrees] | 0.0 | deg | Patel & Espinoza 2022 | |
orbital period [days] | 4.3530101 | 2.7e-06 | day | Patel & Espinoza 2022 |
Rp | 16.25 | 0.94 | R_Earth | ExoFOP-TESS TOI |
Rp/Rs | 0.1013 | 0 | ExoFOP-TESS TOI | |
ephemeris [JD] | 2458883.80332 | 0.00022 | BJD | Patel & Espinoza 2022 |
Previously Published Mid-Transit Times
Value | Uncertainty | Units | Reference |
---|---|---|---|
2455305.62823 | 0.00025 | BJD-UTC | Brothwell et al. 2014 |
2455575.5142933335 | 0.0012333333333333335 | BJD-TDB, HJD | Ivshina & Winn 2022, Bonomo et al. 2017, Barros et al. 2012 |
2458883.80332 | 0.00022 | BJD | Patel & Espinoza 2022 |
2458892.510627 | 0.000568 | BJD | ExoFOP-TESS TOI |
Observations

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0011 | 0.0028 |
Am2 | -0.0005 | 0.0012 |
a/Rs | 7.116 | 0.093 |
Rp/Rs | 0.1128 | 0.0028 |
ephemeris [JD] | 2459606.4055 | 0.0016 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.194451548315115 | |
u1 | -3.919382090653955 | |
u2 | 4.277014711024204 | |
u3 | -1.552084104952879 | |
duration | 0.1792 | 0.0036 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
R | Cousins R | 561.7 nm | 719.7 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | PJEF (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 1.0002 | 0.0012 |
Am2 | 0 | |
a/Rs | 7.242 | 0.059 |
Rp/Rs | 0.0952 | 0.0012 |
ephemeris [JD] | 2458875.0972 | 0.00093 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.7098570550262226 | |
u1 | -4.884487775199071 | |
u2 | 4.867087278967061 | |
u3 | -1.6924564862689606 | |
duration | 0.1701 | 0.0022 |
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 | 0.9991 | 0.0017 |
Am2 | 0 | |
a/Rs | 7.13 | 0.07 |
Rp/Rs | 0.0968 | 0.0014 |
ephemeris [JD] | 2458896.8629 | 0.0012 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.7087445266556123 | |
u1 | -4.880324030603938 | |
u2 | 4.8618924493705205 | |
u3 | -1.6903128729743515 | |
duration | 0.1746 | 0.0026 |
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 | 0.9995 | 0.0016 |
Am2 | 0 | |
a/Rs | 7.222 | 0.069 |
Rp/Rs | 0.0932 | 0.0014 |
ephemeris [JD] | 2458888.155 | 0.0011 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.7084103045514305 | |
u1 | -4.878966907072406 | |
u2 | 4.860072957806612 | |
u3 | -1.6895162828649064 | |
duration | 0.1705 | 0.0026 |
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 | 0.0015 |
Am2 | 0 | |
a/Rs | 7.04 | 0.076 |
Rp/Rs | 0.093 | 0.0014 |
ephemeris [JD] | 2458892.51 | 0.0012 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.7097197584456802 | |
u1 | -4.884802319571567 | |
u2 | 4.8681276627757075 | |
u3 | -1.693045029109065 | |
duration | 0.1773 | 0.0029 |
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 | 1.0006 | 0.0013 |
Am2 | 0 | |
a/Rs | 7.226 | 0.074 |
Rp/Rs | 0.0953 | 0.0015 |
ephemeris [JD] | 2458883.8038 | 0.0012 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.708937489895144 | |
u1 | -4.881181908176321 | |
u2 | 4.8629462200675295 | |
u3 | -1.6907017293228077 | |
duration | 0.1707 | 0.0027 |
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 | 0.9997 | 0.0012 |
Am2 | 0 | |
a/Rs | 7.339 | 0.085 |
Rp/Rs | 0.0925 | 0.0017 |
ephemeris [JD] | 2458870.7438 | 0.0013 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.7096256176332787 | |
u1 | -4.883948624059753 | |
u2 | 4.86668386553878 | |
u3 | -1.6923607865930643 | |
duration | 0.166 | 0.0031 |
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 | 0.0012 |
Am2 | 0 | |
a/Rs | 7.302 | 0.059 |
Rp/Rs | 0.0943 | 0.0013 |
ephemeris [JD] | 2458879.45043 | 0.00093 |
eccentricity | 0.016 | |
inclination [degrees] | 84.88 | |
omega [degrees] | 0.0 | |
orbital period [days] | 4.3530101 | |
u0 | 2.7100632259356505 | |
u1 | -4.886214138068025 | |
u2 | 4.869965827842112 | |
u3 | -1.6938148431415918 | |
duration | 0.1679 | 0.0021 |
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) |