results

WASP-13 b

Timing Plot

Total Reductions to Date: 8

Date Processed: 09/06/2025 at 07:00:04 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.353011285440786 3.6206678970457975e-07
Ephemeris (BJD_TDB) 2459606.403296865 0.0002152963502260754
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] 5826.0 100.0 K Kokori et al. 2023
a/Rs 8.51 0.21 Kokori et al. 2023
eccentricity 0.016 Bonomo et al. 2017
inclination [degrees] 86.9 1.6 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 4.35301101 6.6e-07 day Kokori et al. 2023
Rp 16.25 0.94 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1013 0 ExoFOP-TESS TOI
ephemeris [JD] 2457077.3036 0.00028 BJD-TDB Kokori et al. 2023

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
2457077.3036 0.00028 BJD-TDB Kokori et al. 2023
2458883.80332 0.00022 BJD Patel & Espinoza 2022
2458892.510627 0.0005681 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001190
Parameter Value Uncertainty
Am1 1.0008 0.0028
Am2 -0.0001 0.0013
a/Rs 8.08 0.15
Rp/Rs 0.1076 0.0028
ephemeris [JD] 2459606.4049 0.0018
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.1543470759544934
u1 -3.83084883432286
u2 4.199959227962648
u3 -1.5234574070100115
duration 0.1752 0.0039
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for e0d4775d6597d2a6132ac5860c16113b
Parameter Value Uncertainty
Am1 1.0002 0.0012
Am2 0
a/Rs 8.395 0.087
Rp/Rs 0.0922 0.0012
ephemeris [JD] 2458875.09719 0.00088
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.6792820499015133
u1 -4.836155466000533
u2 4.846570802519034
u3 -1.6896973142004819
duration 0.1649 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for e6a2482f9e1761a201b73db912ec0e39
Parameter Value Uncertainty
Am1 0.9992 0.0017
Am2 0
a/Rs 8.22 0.12
Rp/Rs 0.0945 0.0013
ephemeris [JD] 2458896.8628 0.0012
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.6795192370226912
u1 -4.838499832399219
u2 4.850304148201699
u3 -1.6913234805500066
duration 0.1694 0.0031
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 156071d9016315ffdfa74350f4793ddb
Parameter Value Uncertainty
Am1 0.9995 0.0016
Am2 0
a/Rs 8.41 0.11
Rp/Rs 0.0905 0.0014
ephemeris [JD] 2458888.1547 0.0011
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.678865781170128
u1 -4.836239195067404
u2 4.847759215915068
u3 -1.6903857297805502
duration 0.1638 0.0027
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 22af4b195f256a3806deba0672b86fd5
Parameter Value Uncertainty
Am1 1.0002 0.0015
Am2 0
a/Rs 8.15 0.1
Rp/Rs 0.0902 0.0013
ephemeris [JD] 2458892.5101 0.0011
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.678116655933675
u1 -4.833184271532016
u2 4.84358017504029
u3 -1.6885124872669803
duration 0.1698 0.0025
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for bb53a7932c5937784ed16db284c68ebd
Parameter Value Uncertainty
Am1 1.0006 0.0013
Am2 0
a/Rs 8.37 0.11
Rp/Rs 0.0923 0.0015
ephemeris [JD] 2458883.8039 0.001
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.6784594161061355
u1 -4.834096558004096
u2 4.844594896974687
u3 -1.6889576828866373
duration 0.1653 0.0026
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for f560fdb654bbdf54d49d04b6ed2fc4f9
Parameter Value Uncertainty
Am1 0.9997 0.0012
Am2 0
a/Rs 8.64 0.13
Rp/Rs 0.0895 0.0014
ephemeris [JD] 2458870.7436 0.0012
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.67883577461846
u1 -4.835463428926482
u2 4.846217891020314
u3 -1.6895901644980174
duration 0.1583 0.0029
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for e0d9003921fd5347efbe58715387ff72
Parameter Value Uncertainty
Am1 1.0001 0.0012
Am2 0
a/Rs 8.51 0.088
Rp/Rs 0.0913 0.0011
ephemeris [JD] 2458879.45021 0.00089
eccentricity 0.016
inclination [degrees] 86.9
omega [degrees] 0.0
orbital period [days] 4.35301101
u0 2.678341210424778
u1 -4.83431974160736
u2 4.845332373222743
u3 -1.6893537698390824
duration 0.1619 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)