results

WASP-181 b

Timing Plot

Total Reductions to Date: 11

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.5195091546113515 1.2004031389451644e-06
Ephemeris (BJD_TDB) 2460228.878049647 0.00041682447827088095
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 26.7932253 decimal
DEC 3.1329325 decimal
Host Star Metallicity 0.09 0.04 Kokori et al. 2023
Host Star log(g) 4.487 0.039 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 0.965 0.043 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 5839.0 70.0 K Kokori et al. 2023
a/Rs 12.09 0.54 Kokori et al. 2023
eccentricity 0.0 Kokori et al. 2023
inclination [degrees] 88.38 0.76 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 4.51949982 6e-07 day Kokori et al. 2023
Rp 13.27 0.8 R_Earth Turner et al. 2019
Rp/Rs 0.1261 0 Turner et al. 2019
ephemeris [JD] 2458741.95975 0.00012 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2457747.66681 0.00035 JD Turner et al. 2019
2458741.95975 0.00012 BJD-TDB Kokori et al. 2023
2459451.5213205 0.000342285 BJD, BJD-TDB Ivshina & Winn 2022, ExoFOP-TESS TOI

Observations

Light curve chart for 0007071
Parameter Value Uncertainty
Am1 1.028 0.034
Am2 -0.02 0.02
a/Rs 12.74 1.48
Rp/Rs 0.136 0.044
ephemeris [JD] 2459148.71 0.011
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7740070597746136
u1 -3.0977422253069067
u2 3.7373740864716676
u3 -1.4136388652481613
duration 0.122 0.016
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 NLIC (collaborate/publish) MOBS
Light curve chart for 0006454
Parameter Value Uncertainty
Am1 0.868 0.03
Am2 0.0423 0.0093
a/Rs 10.56 1.15
Rp/Rs 0.199 0.046
ephemeris [JD] 2459175.8522 0.0064
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7739769133366101
u1 -3.0987734292797975
u2 3.7391850020145965
u3 -1.4143884303532106
duration 0.15 0.013
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 RFCA (collaborate/publish) MOBS
Light curve chart for 0010989
Parameter Value Uncertainty
Am1 0.943 0.02
Am2 0.049 0.02
a/Rs 10.84 1.48
Rp/Rs 0.146 0.055
ephemeris [JD] 2459428.923 0.011
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7738907415183123
u1 -3.0978101654511505
u2 3.7378397939822845
u3 -1.413920314351293
duration 0.1125 0.0066
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 FSAF (collaborate/publish) MOBS
Light curve chart for 0009729
Parameter Value Uncertainty
Am1 0.976 0.019
Am2 0.015 0.01
a/Rs 14.69 1.57
Rp/Rs 0.115 0.037
ephemeris [JD] 2459523.813 0.012
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7736517684607283
u1 -3.097224334434023
u2 3.737072425337424
u3 -1.4134998036774111
duration 0.099 0.012
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 FSAF (collaborate/publish) MOBS
Light curve chart for 0004008
Parameter Value Uncertainty
Am1 0.977 0.019
Am2 0.016 0.01
a/Rs 14.79 1.54
Rp/Rs 0.121 0.035
ephemeris [JD] 2459523.813 0.013
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7740667501629306
u1 -3.097832073234831
u2 3.7375146541520037
u3 -1.4137492753867944
duration 0.098 0.012
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 PAIB (collaborate/publish) MOBS
Light curve chart for 0009328
Parameter Value Uncertainty
Am1 0.33 0.11
Am2 0.99 0.57
a/Rs 10.85 1.55
Rp/Rs 0.247 0.07
ephemeris [JD] 2459573.565 0.012
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7741546728311601
u1 -3.0987851052755127
u2 3.7389241349817524
u3 -1.4142936468230891
duration 0.0542 0.004
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 RPEC (collaborate/publish) MOBS
Light curve chart for 0013003
Parameter Value Uncertainty
Am1 0.999 0.026
Am2 0.005 0.01
a/Rs 11.04 1.55
Rp/Rs 0.117 0.041
ephemeris [JD] 2459600.667 0.012
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7738335597187438
u1 -3.097793078165416
u2 3.7376548176958595
u3 -1.4136952435537897
duration 0.129 0.016
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 ASJB (collaborate/publish) MOBS
Light curve chart for 0002143
Parameter Value Uncertainty
Am1 0.9395 0.0052
Am2 0.046 0.017
a/Rs 14.65 0.76
Rp/Rs 0.122 0.011
ephemeris [JD] 2459871.8416 0.0031
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 2.6929198299706374
u1 -4.870809181424627
u2 4.89941388513399
u3 -1.7215244606730447
duration 0.1028 0.0063
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
AAVSO LPAC (collaborate/publish)
Light curve chart for 0004702
Parameter Value Uncertainty
Am1 0.887 0.03
Am2 0.082 0.043
a/Rs 14.57 1.57
Rp/Rs 0.075 0.036
ephemeris [JD] 2460219.857 0.012
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7740995635088388
u1 -3.0990326911642474
u2 3.739420135026785
u3 -1.4144869516496743
duration 0.098 0.013
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 CPHB (collaborate/publish) MOBS
Light curve chart for 0004737
Parameter Value Uncertainty
Am1 1.0403 0.0054
Am2 -0.0275 0.0053
a/Rs 12.01 0.39
Rp/Rs 0.1521 0.0052
ephemeris [JD] 2460228.8793 0.0017
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 2.032488750766183
u1 -3.697538006271486
u2 4.234544475837598
u3 -1.5694951572326645
duration 0.1318 0.0049
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 0004727
Parameter Value Uncertainty
Am1 1.183 0.02
Am2 -0.116 0.021
a/Rs 12.67 1.35
Rp/Rs 0.141 0.034
ephemeris [JD] 2460228.8768 0.0087
eccentricity 0.0
inclination [degrees] 88.38
omega [degrees] 0.0
orbital period [days] 4.51949982
u0 1.7737706074306825
u1 -3.0973153487004383
u2 3.7371599802280473
u3 -1.413615183270268
duration 0.123 0.016
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 CPHB (collaborate/publish) MOBS