results

HAT-P-17 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) 10.338536541751251 7.582220583168241e-07
Ephemeris (BJD_TDB) 2460539.057747793 0.00028820879725496954
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 324.5359781 decimal
DEC 30.4881882 decimal
Host Star Metallicity 0.0 0.08 Kokori et al. 2023
Host Star log(g) 4.52 0.02 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 0.838 0.021 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 5246.0 80.0 K Kokori et al. 2023
a/Rs 22.6 0.5 Kokori et al. 2023
eccentricity 0.342 0.006 Kokori et al. 2023
inclination [degrees] 89.2 0.2 deg Kokori et al. 2023
omega [degrees] 201.0 1.0 deg Kokori et al. 2023
orbital period [days] 10.33853522 7e-07 day Kokori et al. 2023
Rp 11.87 0.62 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1348 0 ExoFOP-TESS TOI
ephemeris [JD] 2456703.460703 5e-05 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454801.1698049996 0.0002 BJD-TDB, BJD-UTC Bonomo et al. 2017, Howard et al. 2012
2456569.05972 5e-05 BJD-TDB Kokori et al. 2022
2456703.460703 5e-05 BJD-TDB Kokori et al. 2023
2458719.47527 0.00025 BJD-TDB Ivshina & Winn 2022
2460539.055031 0.0015556 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001888
Parameter Value Uncertainty
Am1 1.134 0.013
Am2 -0.104 0.013
a/Rs 24.36 0.91
Rp/Rs 0.155 0.01
ephemeris [JD] 2459825.6958 0.0035
eccentricity 0.342
inclination [degrees] 89.2
omega [degrees] 201.0
orbital period [days] 10.33853522
u0 1.5788870881030213
u1 -2.7208676920422366
u2 3.3908879378977996
u3 -1.248907283430417
duration 0.16 0.0068
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 SGEO (collaborate/publish)
Light curve chart for 0004051
Parameter Value Uncertainty
Am1 1.0464 0.0092
Am2 -0.0307 0.0066
a/Rs 20.98 0.52
Rp/Rs 0.1814 0.0066
ephemeris [JD] 2460135.8553 0.0022
eccentricity 0.342
inclination [degrees] 89.2
omega [degrees] 201.0
orbital period [days] 10.33853522
u0 2.128836490642782
u1 -3.651038845883387
u2 3.9064829194763555
u3 -1.3842805060246186
duration 0.1921 0.0052
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)
Light curve chart for ac8aaa47340e360c91e5c83d9378b93f
Parameter Value Uncertainty
Am1 1.00025 0.00094
Am2 0
a/Rs 22.47 0.29
Rp/Rs 0.1209 0.0016
ephemeris [JD] 2458729.81358 0.00097
eccentricity 0.342
inclination [degrees] 89.2
omega [degrees] 201.0
orbital period [days] 10.33853522
u0 2.462031103439731
u1 -4.321378520240051
u2 4.382980545750646
u3 -1.523633063638826
duration 0.1691 0.0024
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 026fcfa6078da35858a1cc0f65319df3
Parameter Value Uncertainty
Am1 0.99995 0.00086
Am2 0
a/Rs 22.52 0.29
Rp/Rs 0.1189 0.0015
ephemeris [JD] 2459815.35953 0.00096
eccentricity 0.342
inclination [degrees] 89.2
omega [degrees] 201.0
orbital period [days] 10.33853522
u0 2.4623820550964832
u1 -4.3227316707557835
u2 4.384879847780686
u3 -1.524530166781584
duration 0.1683 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 70a9af68fd3c60116411b69b1c7d64ab
Parameter Value Uncertainty
Am1 1.0 0.0011
Am2 0
a/Rs 22.39 0.3
Rp/Rs 0.12 0.0016
ephemeris [JD] 2458719.4761 0.001
eccentricity 0.342
inclination [degrees] 89.2
omega [degrees] 201.0
orbital period [days] 10.33853522
u0 2.463007489082263
u1 -4.323411233934283
u2 4.3847732901242695
u3 -1.5243694799340366
duration 0.1695 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)