results
XO-5 b


Total Reductions to Date: 7
Date Processed: 09/24/2023 at 00:07:22 (PDT)
Exoplanet Watch Ephemeris
Parameter | Value | Uncertainty |
---|---|---|
Orbital Period (Days) | 4.187756503163547 | 3.081619868537068e-07 |
Ephemeris (BJD_TDB) | 2460017.6940103476 | 0.00030019768155710897 |
Time saved (hours) | 0.0009 |
Assumed Priors
Parameter | Value | Uncertainty | Units | Reference |
---|---|---|---|---|
RA | 116.7163868 | decimal | ||
DEC | 39.0944695 | decimal | ||
Host Star Metallicity | 0.25 | 0.03 | Kokori et al. 2022 | |
Host Star log(g) | 4.52 | 0.06 | Log10(cgs) | Kokori et al. 2022 |
Host Star Radius [R_Sun] | 1.11 | 0.09 | Sol | Kokori et al. 2022 |
Host Star Effective Temperature [K] | 5510.0 | 44.0 | K | Kokori et al. 2022 |
a/Rs | 9.9602 | 0.511 | Southworth 2010 | |
eccentricity | 0.0 | 0.014 | Ment et al. 2018 | |
inclination [degrees] | 86.7 | 0.4 | deg | Bonomo et al. 2017 |
omega [degrees] | 331.01 | 0.72 | deg | Ment et al. 2018 |
orbital period [days] | 4.1877539 | 1.4e-06 | day | Ivshina & Winn 2022 |
Rp | 11.77 | 0.63 | R_Earth | ExoFOP-TESS TOI |
Rp/Rs | 0.1068 | 0 | ExoFOP-TESS TOI | |
ephemeris [JD] | 2455218.5258 | 0.00045 | BJD-TDB | Ivshina & Winn 2022 |
Previously Published Mid-Transit Times
Value | Uncertainty | Units | Reference |
---|---|---|---|
2454485.6664 | 0.0004 | HJD | Burke et al. 2008 |
2454552.67168 | 0.00029 | BJD | Pal et al. 2009 |
2455218.5258 | 0.00045 | BJD-TDB | Ivshina & Winn 2022 |
2455469.7912 | 0.0003 | BJD-TDB | Kokori et al. 2022 |
2456864.31328 | 0.00021500000000000002 | BJD-TDB, HJD-UTC | Bonomo et al. 2017, Smith 2015 |
2459582.167296 | 0.000546 | BJD | ExoFOP-TESS TOI |
Observations

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9846 | 0.0054 |
Am2 | 0.015 | 0.014 |
a/Rs | 9.76 | 0.17 |
Rp/Rs | 0.1049 | 0.0038 |
ephemeris [JD] | 2459280.6513 | 0.0015 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 1.9169272445276837 | |
u1 | -3.3871157820748508 | |
u2 | 3.8562116906440576 | |
u3 | -1.3860230956348585 | |
duration | 0.1305 | 0.0032 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter | Detail | Min | Max |
---|---|---|---|
CV | Clear (unfiltered) reduced to V sequence | 350.0 nm | 850.0 nm |
Organization | Observer Code | Secondary Observers |
---|---|---|
AAVSO | MWAA (collaborate/publish) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.958 | 0.0054 |
Am2 | 0.0381 | 0.007 |
a/Rs | 9.76 | 0.22 |
Rp/Rs | 0.0958 | 0.0049 |
ephemeris [JD] | 2460017.6925 | 0.0017 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 1.9165420466635994 | |
u1 | -3.3855296735499447 | |
u2 | 3.8541106301058923 | |
u3 | -1.3851229457888232 | |
duration | 0.1289 | 0.0041 |
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) |

Parameter | Value | Uncertainty |
---|---|---|
Am1 | 0.9998 | 0.0023 |
Am2 | 0 | |
a/Rs | 9.63 | 0.11 |
Rp/Rs | 0.1039 | 0.0017 |
ephemeris [JD] | 2459586.35316 | 0.00091 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 2.5171468391556875 | |
u1 | -4.4122100171384195 | |
u2 | 4.4293889165024 | |
u3 | -1.5343256725166299 | |
duration | 0.1327 | 0.002 |
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 | 0.0021 |
Am2 | 0 | |
a/Rs | 9.8 | 0.12 |
Rp/Rs | 0.1006 | 0.0016 |
ephemeris [JD] | 2459590.54281 | 0.00094 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 2.517066106477992 | |
u1 | -4.4117759029158865 | |
u2 | 4.4287891083838655 | |
u3 | -1.5340792459518702 | |
duration | 0.1287 | 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 | 1.0001 | 0.0023 |
Am2 | 0 | |
a/Rs | 9.83 | 0.13 |
Rp/Rs | 0.1011 | 0.0017 |
ephemeris [JD] | 2459582.16809 | 0.00095 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 2.51723075613065 | |
u1 | -4.412223252691463 | |
u2 | 4.429224508876013 | |
u3 | -1.5342319463146108 | |
duration | 0.1281 | 0.0024 |
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 | 0.0021 |
Am2 | 0 | |
a/Rs | 9.84 | 0.12 |
Rp/Rs | 0.1021 | 0.0017 |
ephemeris [JD] | 2459598.91773 | 0.00085 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 2.5171464357925957 | |
u1 | -4.412084834601144 | |
u2 | 4.429189771186984 | |
u3 | -1.5342513063783643 | |
duration | 0.1287 | 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 | 1.0001 | 0.0022 |
Am2 | 0 | |
a/Rs | 9.76 | 0.13 |
Rp/Rs | 0.1005 | 0.0018 |
ephemeris [JD] | 2459603.1069 | 0.001 |
eccentricity | 0.0 | |
inclination [degrees] | 86.7 | |
omega [degrees] | 331.01 | |
orbital period [days] | 4.1877539 | |
u0 | 2.5174933420611914 | |
u1 | -4.413865965909062 | |
u2 | 4.431700455365675 | |
u3 | -1.535327765480321 | |
duration | 0.1297 | 0.0024 |
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) |