results

HAT-P-52 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) 2.753607928575307 3.1103857986287616e-07
Ephemeris (BJD_TDB) 2459883.3809084524 0.00027211681526994594
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 42.7217412 decimal
DEC 29.0222492 decimal
Host Star Metallicity 0.28 0.08 Kokori et al. 2023
Host Star log(g) 4.483 0.051 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 0.893 0.047 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 5131.0 50.0 K Kokori et al. 2023
a/Rs 8.9 0.5 Kokori et al. 2023
eccentricity 0.03 Bonomo et al. 2017
inclination [degrees] 87.0 0.9 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 2.7535976 3.6e-07 day Kokori et al. 2023
Rp 10.71 0.81 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1202 0 ExoFOP-TESS TOI
ephemeris [JD] 2458233.96601 0.0002 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2455852.103643 0.00041 BJD-TDB, BJD-UTC Bonomo et al. 2017, Hartman et al. 2015
2456581.8074 0.0004 BJD-TDB Kokori et al. 2022
2456645.13981 0.00032 BJD-TDB Mallonn et al. 2019
2457727.30376 0.00026 BJD-TDB Ivshina & Winn 2022
2458233.96601 0.0002 BJD-TDB Kokori et al. 2023
2459883.369678 0.00121474 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0000670
Parameter Value Uncertainty
Am1 1.0638 0.0086
Am2 -0.025 0.015
a/Rs 6.41 1.49
Rp/Rs 0.169 0.028
ephemeris [JD] 2459269.2986 0.0089
eccentricity 0.03
inclination [degrees] 87.0
omega [degrees] 0.0
orbital period [days] 2.7535976
u0 2.160567333173033
u1 -3.730715392276551
u2 3.9379638077044987
u3 -1.3678156899207474
duration 0.122 0.016
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CBB Clear with blue-blocking 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO BANP (collaborate/publish)
Light curve chart for 0001396
Parameter Value Uncertainty
Am1 0.808 0.02
Am2 0.181 0.051
a/Rs 11.38 1.5
Rp/Rs 0.147 0.051
ephemeris [JD] 2459599.771 0.012
eccentricity 0.03
inclination [degrees] 87.0
omega [degrees] 0.0
orbital period [days] 2.7535976
u0 2.1607221923325852
u1 -3.7315982751666033
u2 3.93925692487735
u3 -1.36838078334383
duration 0 0
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 0002016
Parameter Value Uncertainty
Am1 1.235 0.058
Am2 -0.195 0.045
a/Rs 6.4 0.11
Rp/Rs 0.24 0.01
ephemeris [JD] 2459855.85582 0.00039
eccentricity 0.03
inclination [degrees] 87.0
omega [degrees] 0.0
orbital period [days] 2.7535976
u0 1.8085251849093438
u1 -3.107233711224255
u2 3.5277497907627695
u3 -1.2290412118802898
duration 0.1644 0.0034
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 0002131
Parameter Value Uncertainty
Am1 0.965 0.011
Am2 0.035 0.011
a/Rs 8.76 1.17
Rp/Rs 0.118 0.025
ephemeris [JD] 2459855.8345 0.0084
eccentricity 0.03
inclination [degrees] 87.0
omega [degrees] 0.0
orbital period [days] 2.7535976
u0 2.3772009989675116
u1 -4.110293392068284
u2 4.166334387612512
u3 -1.433241932428519
duration 0.102 0.018
Not 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 0002312
Parameter Value Uncertainty
Am1 1.007 0.01
Am2 -0.0039 0.0076
a/Rs 8.25 1.4
Rp/Rs 0.114 0.04
ephemeris [JD] 2459880.618 0.01
eccentricity 0.03
inclination [degrees] 87.0
omega [degrees] 0.0
orbital period [days] 2.7535976
u0 2.3762762036142426
u1 -4.107468811591986
u2 4.163227680312222
u3 -1.4320350102975512
duration 0.098 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
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
AAVSO DLMA (collaborate/publish) RWEA