results

WASP-127 b

Timing Plot

Total Reductions to Date: 5

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.178064633501517 4.162008106708223e-07
Ephemeris (BJD_TDB) 2460039.6891744146 0.00018880260676679914
Time saved (hours) 0.0008  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 160.5587646 decimal
DEC -3.8349989 decimal
Host Star Metallicity -0.18 0.06 Boehm et al. 2025
Host Star log(g) 4.18 0.01 Log10(cgs) Boehm et al. 2025
Host Star Radius [R_Sun] 1.39 0.03 Sol Boehm et al. 2025
Host Star Effective Temperature [K] 5620.0 85.0 K Boehm et al. 2025
a/Rs 8.116 0.106 Boehm et al. 2025
eccentricity 0.0 Boehm et al. 2025
inclination [degrees] 88.2 1.1 deg Kokori et al. 2023
omega [degrees] 0.0 deg Boehm et al. 2025
orbital period [days] 4.178062 5.7e-07 day Boehm et al. 2025
Rp 14.69 0.28 R_Earth Seidel et al. 2020
Rp/Rs 0.101 0 Seidel et al. 2020
ephemeris [JD] 2459989.546 0.001 BJD-TDB Boehm et al. 2025

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2459989.546 0.001 BJD-TDB Boehm et al. 2025
2458385.175527 9.1e-05 BJD-TDB Kokori et al. 2023
2458218.05313 0.00012 BJD-TDB Ivshina & Winn 2022
2456776.62124 0.00023 BJD Seidel et al. 2020
2458238.943367 5.5e-05 BJD-TDB Skaf et al. 2020
2458543.942051 0.00011293 BJD ExoFOP-TESS TOI
2457808.60283 0.00031 BJD-TDB Palle et al. 2017
2457248.74131 0.00016 BJD Lam et al. 2017

Observations

Light curve chart for 0005407
Parameter Value Uncertainty
Am1 0.922 0.061
Am2 0.04 0.046
a/Rs 8.63 0.3
Rp/Rs 0.066 0.046
ephemeris [JD] 2458915.805 0.012
eccentricity 0.0
inclination [degrees] 88.2
omega [degrees] 0.0
orbital period [days] 4.178062
u0 1.7453848303000956
u1 -2.993533555359969
u2 3.5860951579504214
u3 -1.3379463794535664
duration 0.1595 0.0089
Not 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 SMAMA (collaborate/publish) MOBS
Light curve chart for 0008445
Parameter Value Uncertainty
Am1 0.955 0.044
Am2 0.023 0.044
a/Rs 8.61 0.31
Rp/Rs 0.047 0.047
ephemeris [JD] 2458915.773 0.012
eccentricity 0.0
inclination [degrees] 88.2
omega [degrees] 0.0
orbital period [days] 4.178062
u0 1.7447855785829602
u1 -2.99233350595807
u2 3.5850925613206037
u3 -1.3375445805234518
duration 0.1578 0.0085
Not 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 JAHB (collaborate/publish) MOBS
Light curve chart for 0002485
Parameter Value Uncertainty
Am1 1.2105 0.0081
Am2 -0.105 0.0064
a/Rs 7.59 0.3
Rp/Rs 0.116 0.014
ephemeris [JD] 2459972.8365 0.0071
eccentricity 0.0
inclination [degrees] 88.2
omega [degrees] 0.0
orbital period [days] 4.178062
u0 2.01704201817744
u1 -3.6147297980643565
u2 4.093081851180759
u3 -1.49539401030217
duration 0.1918 0.0085
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 NANF (collaborate/publish)
Light curve chart for 0002992
Parameter Value Uncertainty
Am1 0.962 0.017
Am2 0.0292 0.0042
a/Rs 8.61 0.29
Rp/Rs 0.069 0.013
ephemeris [JD] 2460018.7879 0.0089
eccentricity 0.0
inclination [degrees] 88.2
omega [degrees] 0.0
orbital period [days] 4.178062
u0 2.017582193066251
u1 -3.6158663736649648
u2 4.094136492525146
u3 -1.4958522509190435
duration 0.1589 0.0062
Not 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 NANF (collaborate/publish)
Light curve chart for 0003938
Parameter Value Uncertainty
Am1 0.986 0.0046
Am2 0.0056 0.0016
a/Rs 8.63 0.31
Rp/Rs 0.085 0.011
ephemeris [JD] 2460039.6987 0.0038
eccentricity 0.0
inclination [degrees] 88.2
omega [degrees] 0.0
orbital period [days] 4.178062
u0 2.134784365408541
u1 -3.695146362272228
u2 4.0016598524678635
u3 -1.4412977959747986
duration 0.1037 0.005
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 PJEG (collaborate/publish)