results

WASP-28 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) 3.408834876323844 3.0167084973130594e-07
Ephemeris (BJD_TDB) 2460229.807936572 0.0002289666369835654
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 353.6162694 decimal
DEC -1.5799849 decimal
Host Star Metallicity -0.29 0.1 Kokori et al. 2023
Host Star log(g) 4.37 0.018 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 1.094 0.031 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 6150.0 140.0 K Kokori et al. 2023
a/Rs 8.62 0.1 Kokori et al. 2023
eccentricity 0.0 Močnik et al. 2020
inclination [degrees] 88.3 1.6 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 3.40883502 5e-07 day Kokori et al. 2023
Rp 13.66 0.31 R_Earth Močnik et al. 2020
Rp/Rs 0.1157 0 Močnik et al. 2020
ephemeris [JD] 2457618.64044 0.00014 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2455290.4056550004 0.0005250000000000001 BJD-TDB, nan Bonomo et al. 2017, Maciejewski et al. 2016, Anderson et al. 2015, Petrucci et al. 2015
2456933.46456 0.00013 BJD-TDB Ivshina & Winn 2022
2457618.64044 0.00014 BJD-TDB Kokori et al. 2023
2457642.502126 1.4e-05 BJD Močnik et al. 2020
2457683.40894 3e-05 BJD-TDB Kokori et al. 2022
2460229.806391 0.0003378 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0000500
Parameter Value Uncertainty
Am1 14.29 0.1
Am2 -0.124 0.012
a/Rs 8.58 0.27
Rp/Rs 0.108 0.016
ephemeris [JD] 2459128.7573 0.004
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.2097764827774915
u1 -3.8058806494253745
u2 4.081970969019735
u3 -1.485866741545745
duration 0.1369 0.0049
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
SR Sloan r 553.1 nm 693.1 nm
Organization Observer Code Secondary Observers
AAVSO JBEB (collaborate/publish)
Light curve chart for 0004736
Parameter Value Uncertainty
Am1 1.0108 0.0067
Am2 -0.006 0.0019
a/Rs 8.39 0.22
Rp/Rs 0.1238 0.0053
ephemeris [JD] 2460229.8088 0.002
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.084854070268037
u1 -3.6901973821244143
u2 4.1501568706546195
u3 -1.5448134969560852
duration 0.1421 0.0042
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 0004726
Parameter Value Uncertainty
Am1 0.9859 0.005
Am2 0.0097 0.0034
a/Rs 8.84 0.18
Rp/Rs 0.1079 0.0044
ephemeris [JD] 2460229.8092 0.0016
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 1.8666497807926317
u1 -3.1651075649581566
u2 3.69820220414722
u3 -1.3997443648741874
duration 0.1327 0.0029
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 69850a86cf19bfc5402d8e61e66fea6e
Parameter Value Uncertainty
Am1 1.0017 0.0049
Am2 0
a/Rs 9.12 0.088
Rp/Rs 0.1264 0.002
ephemeris [JD] 2459469.6304 0.0012
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.811594382305082
u1 -5.052693701894099
u2 4.96699334626822
u3 -1.7258939526652348
duration 0.1304 0.0014
Not 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 d1ce9200f8ebe1284f5a2f7c13640dfe
Parameter Value Uncertainty
Am1 1.0 0.0025
Am2 0
a/Rs 8.76 0.13
Rp/Rs 0.1139 0.0016
ephemeris [JD] 2459462.82001 0.00085
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.8115395076420024
u1 -5.052768079526396
u2 4.967337214290416
u3 -1.72610856838693
duration 0.1348 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 d354a4748765950cf716e4e5d3d7c6f8
Parameter Value Uncertainty
Am1 1.0003 0.0024
Am2 0
a/Rs 8.63 0.13
Rp/Rs 0.1149 0.0017
ephemeris [JD] 2459449.1847 0.00089
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.812103505085922
u1 -5.053328416678477
u2 4.966988327664938
u3 -1.7257633420584888
duration 0.1371 0.0023
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 d441acb544d1c75cd4c8ac97bd58c655
Parameter Value Uncertainty
Am1 1.0001 0.0024
Am2 0
a/Rs 8.63 0.12
Rp/Rs 0.1142 0.0016
ephemeris [JD] 2459452.59257 0.00081
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.811882628773508
u1 -5.053378145346024
u2 4.96760508918971
u3 -1.7261094985941106
duration 0.1371 0.002
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 57f34cc9970484b393b058cdfedcf59e
Parameter Value Uncertainty
Am1 1.0001 0.0028
Am2 0
a/Rs 8.52 0.14
Rp/Rs 0.1162 0.0018
ephemeris [JD] 2459466.2286 0.001
eccentricity 0.0
inclination [degrees] 88.3
omega [degrees] 0.0
orbital period [days] 3.40883502
u0 2.81227867685891
u1 -5.0547226117240145
u2 4.9692512112519545
u3 -1.7268072023392365
duration 0.1385 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)