results

TOI-2154 b

Timing Plot

Total Reductions to Date: 4

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.8240788208998118 6.823302533727207e-06
Ephemeris (BJD_TDB) 2460230.816263421 0.0009059634762268309
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 71.0281482 decimal
DEC 84.3642652 decimal
Host Star Metallicity 0.011 0.071 Rodriguez et al. 2023
Host Star log(g) 4.239 0.042 Log10(cgs) Rodriguez et al. 2023
Host Star Radius [R_Sun] 1.396 0.049 Sol Rodriguez et al. 2023
Host Star Effective Temperature [K] 6280.0 160.0 K Rodriguez et al. 2023
a/Rs 7.91 0.33 Rodriguez et al. 2023
eccentricity 0.117 0.1 Rodriguez et al. 2023
inclination [degrees] 83.37 0.55 deg Rodriguez et al. 2023
omega [degrees] 31.0 98.0 deg Rodriguez et al. 2023
orbital period [days] 3.8240801 2.5e-06 day Rodriguez et al. 2023
Rp 16.29 0.59 R_Earth Rodriguez et al. 2023
Rp/Rs 0.1069 0 Rodriguez et al. 2023
ephemeris [JD] 2459148.60166 0.0011 BJD-TDB Rodriguez et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2459148.60166 0.0011 BJD-TDB Rodriguez et al. 2023
2459768.102761 0.000245 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0004642
Parameter Value Uncertainty
Am1 1.069 0.012
Am2 -0.029 0.023
a/Rs 7.65 0.62
Rp/Rs 0.114 0.024
ephemeris [JD] 2460123.755 0.0059
eccentricity 0.117
inclination [degrees] 83.37
omega [degrees] 31.0
orbital period [days] 3.8240801
u0 2.1212733775222112
u1 -3.8178398494648884
u2 4.279158355685639
u3 -1.5825918199785334
duration 0.114 0.021
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 PMIF (collaborate/publish) UNIS
Light curve chart for 0004599
Parameter Value Uncertainty
Am1 1.096 0.013
Am2 -0.05 0.018
a/Rs 7.2 0.62
Rp/Rs 0.117 0.021
ephemeris [JD] 2460207.8644 0.007
eccentricity 0.117
inclination [degrees] 83.37
omega [degrees] 31.0
orbital period [days] 3.8240801
u0 2.121619701831515
u1 -3.8188890718615536
u2 4.280460205837673
u3 -1.5831907720238063
duration 0.128 0.023
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 PMIF (collaborate/publish) UNIS
Light curve chart for 0004602
Parameter Value Uncertainty
Am1 0.913 0.012
Am2 0.0441 0.0087
a/Rs 7.67 0.49
Rp/Rs 0.146 0.022
ephemeris [JD] 2460211.7002 0.0051
eccentricity 0.117
inclination [degrees] 83.37
omega [degrees] 31.0
orbital period [days] 3.8240801
u0 2.1217468221130686
u1 -3.819349535068823
u2 4.280934659121293
u3 -1.5833318823746407
duration 0.119 0.016
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 PMIF (collaborate/publish) UNIS
Light curve chart for 0004734
Parameter Value Uncertainty
Am1 0.9592 0.0044
Am2 0.0269 0.0072
a/Rs 7.63 0.22
Rp/Rs 0.0883 0.0057
ephemeris [JD] 2460230.8121 0.0029
eccentricity 0.117
inclination [degrees] 83.37
omega [degrees] 31.0
orbital period [days] 3.8240801
u0 2.5136833019294675
u1 -4.456733014341364
u2 4.550144628755432
u3 -1.607094848541096
duration 0.1078 0.0074
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
RJ Johnson R 590.0 nm 810.0 nm
Organization Observer Code Secondary Observers
AAVSO MBEB (collaborate/publish)