results

HAT-P-53 b

Timing Plot

Total Reductions to Date: 7

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.961624869952286 3.217798349320002e-07
Ephemeris (BJD_TDB) 2460152.869759486 0.00041464587683911694
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 21.8711012 decimal
DEC 38.9681137 decimal
Host Star Metallicity 0.0 0.08 Kokori et al. 2023
Host Star log(g) 4.31 0.043 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 1.209 0.081 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 5956.0 50.0 K Yalçınkaya et al. 2024
a/Rs 5.6 0.3 Kokori et al. 2023
eccentricity 0.085 Bonomo et al. 2017
inclination [degrees] 86.2 1.5 deg Kokori et al. 2023
omega [degrees] 0.0 deg Yalçınkaya et al. 2024
orbital period [days] 1.96162529 3.5e-07 day Yalçınkaya et al. 2024
Rp 12.9 1.02 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1172 0 ExoFOP-TESS TOI
ephemeris [JD] 2458771.88605 0.00028 BJD-TDB Yalçınkaya et al. 2024

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2455829.4481929997 0.00044 BJD-TDB, BJD-UTC Bonomo et al. 2017, Hartman et al. 2015
2457502.7149 0.0003 BJD-TDB Kokori et al. 2022
2457898.96242 0.00039 BJD-TDB Kokori et al. 2023
2458771.88605 0.00028 BJD-TDB Yalçınkaya et al. 2024
2458785.619295 0.0015216 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0000846
Parameter Value Uncertainty
Am1 0.9994 0.0057
Am2 0.0015 0.003
a/Rs 5.4 0.14
Rp/Rs 0.1342 0.005
ephemeris [JD] 2459434.9124 0.0014
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 2.638367242720337
u1 -4.722190873220478
u2 4.7465863244451345
u3 -1.6627626232153458
duration 0.1255 0.0037
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
SI Sloan i 697.5 nm 827.5 nm
Organization Observer Code Secondary Observers
AAVSO LNWA (collaborate/publish) BPAG
Light curve chart for 0001077
Parameter Value Uncertainty
Am1 1.651 0.051
Am2 -0.526 0.059
a/Rs 7.08 0.24
Rp/Rs 0.2344 0.0055
ephemeris [JD] 2459550.6494 0.0037
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 2.477051456692634
u1 -4.449727491837618
u2 4.619587229808009
u3 -1.646911125825811
duration 0.1009 0.0042
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0001966
Parameter Value Uncertainty
Am1 0.8729 0.0062
Am2 0.13 0.054
a/Rs 5.18 0.29
Rp/Rs 0.1614 0.0073
ephemeris [JD] 2459846.8421 0.0036
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 2.7428580396309754
u1 -4.932483309439379
u2 4.892345329433576
u3 -1.7027199867235452
duration 0.1169 0.0056
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 0002000
Parameter Value Uncertainty
Am1 1.044 0.029
Am2 -0.04 0.029
a/Rs 4.1 0.21
Rp/Rs 0.143 0.017
ephemeris [JD] 2459850.7711 0.0047
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 2.072127246833829
u1 -3.764458504282523
u2 4.276140470986724
u3 -1.583809149818571
duration 0.171 0.01
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 0002005
Parameter Value Uncertainty
Am1 0.989 0.019
Am2 0.0101 0.0075
a/Rs 4.81 0.76
Rp/Rs 0.094 0.017
ephemeris [JD] 2459852.7301 0.0066
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 2.4767599295763767
u1 -4.448879725665045
u2 4.6188429077689666
u3 -1.6467230428541755
duration 0.136 0.026
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO NANF (collaborate/publish)
Light curve chart for 0002116
Parameter Value Uncertainty
Am1 1.0002 0.0075
Am2 -0.0001 0.0026
a/Rs 5.84 0.33
Rp/Rs 0.1119 0.0053
ephemeris [JD] 2459897.858 0.0028
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 1.828200675653267
u1 -3.1922700538012725
u2 3.7966871333493204
u3 -1.432617698626268
duration 0.112 0.0077
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 0004171
Parameter Value Uncertainty
Am1 1.0321 0.0089
Am2 -0.0172 0.0026
a/Rs 5.79 0.71
Rp/Rs 0.107 0.013
ephemeris [JD] 2460152.8656 0.0068
eccentricity 0.085
inclination [degrees] 86.2
omega [degrees] 0.0
orbital period [days] 1.96162529
u0 2.0715577451093297
u1 -3.762367807921988
u2 4.273319924111039
u3 -1.582509797620951
duration 0.114 0.017
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)