results

HAT-P-51 b

Timing Plot

Total Reductions to Date: 9

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.218020211850385 6.693498278269118e-07
Ephemeris (BJD_TDB) 2459939.7251674854 0.00028898736458661745
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 21.0651251 decimal
DEC 32.8107 decimal
Host Star Metallicity 0.302 0.052 Kang et al. 2024
Host Star log(g) 4.4256 0.0069 Log10(cgs) Kang et al. 2024
Host Star Radius [R_Sun] 0.995 0.013 Sol Kang et al. 2024
Host Star Effective Temperature [K] 5453.0 31.0 K Kang et al. 2024
a/Rs 10.86 0.08 Kang et al. 2024
eccentricity 0.07 Bonomo et al. 2017
inclination [degrees] 89.28 0.3 deg Kang et al. 2024
omega [degrees] 0.0 deg Kang et al. 2024
orbital period [days] 4.21802091 6.6e-07 day Kang et al. 2024
Rp 13.51 0.19 R_Earth Kang et al. 2024
Rp/Rs 0.1361 0 ExoFOP-TESS TOI
ephemeris [JD] 2458349.53123 0.00013 BJD-TDB Kang et al. 2024

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2456194.12243 0.0004 BJD-TDB, BJD-UTC Bonomo et al. 2017, Hartman et al. 2015
2457868.67797 0.00024 BJD-TDB Kokori et al. 2022
2458345.31404 0.00019 BJD-TDB Kokori et al. 2023
2458349.53123 0.00013 BJD-TDB Kang et al. 2024
2459855.36278 0.00097559 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001087
Parameter Value Uncertainty
Am1 0.9992 0.0057
Am2 0.002 0.02
a/Rs 11.16 0.21
Rp/Rs 0.1287 0.0051
ephemeris [JD] 2459551.6613 0.0026
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 1.6396835103804763
u1 -2.8261362025741015
u2 3.4279463216446198
u3 -1.2414935783706142
duration 0.1347 0.0025
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 0002263
Parameter Value Uncertainty
Am1 1.0032 0.0048
Am2 -0.0023 0.0018
a/Rs 10.78 0.21
Rp/Rs 0.1287 0.0032
ephemeris [JD] 2459939.7257 0.0017
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 1.7123880343425308
u1 -2.981230485312219
u2 3.548183527586421
u3 -1.2793410237446783
duration 0.1395 0.0028
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
NA Custom 418.0 nm 700.0 nm
Organization Observer Code Secondary Observers
AAVSO MBEB (collaborate/publish)
Light curve chart for 0004407
Parameter Value Uncertainty
Am1 0.997 0.023
Am2 0.0031 0.0065
a/Rs 10.48 0.23
Rp/Rs 0.109 0.028
ephemeris [JD] 2460192.8047 0.0097
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 1.6387785942756417
u1 -2.823282531331062
u2 3.4243503583671298
u3 -1.239846370284913
duration 0.1413 0.0047
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 cff8bdb33f5a21bfbe08ab9606d09f08
Parameter Value Uncertainty
Am1 1.0001 0.0056
Am2 0
a/Rs 11.19 0.19
Rp/Rs 0.127 0.0031
ephemeris [JD] 2459859.5813 0.0016
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 2.509071921834163
u1 -4.405455356530683
u2 4.4277652951710404
u3 -1.5313817944956756
duration 0.1342 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 b5257b2001e30003a9fdf95b0e445708
Parameter Value Uncertainty
Am1 1.0001 0.0052
Am2 0
a/Rs 10.74 0.2
Rp/Rs 0.1219 0.003
ephemeris [JD] 2459876.4549 0.0016
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 2.509077330286139
u1 -4.405514930776733
u2 4.427846674689391
u3 -1.53140900821874
duration 0.1393 0.0026
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 da8889f532eeb66a661f70a883ae4508
Parameter Value Uncertainty
Am1 0.9997 0.0054
Am2 0
a/Rs 10.61 0.19
Rp/Rs 0.1229 0.003
ephemeris [JD] 2459872.2363 0.0015
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 2.508714120051705
u1 -4.40422526008302
u2 4.426177189435424
u3 -1.5306659834489285
duration 0.1408 0.0027
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 8043b6985cd878174ef76fae1e007529
Parameter Value Uncertainty
Am1 1.0002 0.0054
Am2 0
a/Rs 10.93 0.19
Rp/Rs 0.1247 0.0031
ephemeris [JD] 2459880.6769 0.0016
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 2.5090098392104494
u1 -4.4052625225945174
u2 4.427518142513872
u3 -1.5312653931546425
duration 0.1373 0.0026
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 b15db942d11d1569600749d271f93723
Parameter Value Uncertainty
Am1 1.0007 0.0051
Am2 0
a/Rs 11.21 0.17
Rp/Rs 0.1283 0.0029
ephemeris [JD] 2459855.3634 0.0014
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 2.508971754133574
u1 -4.405176174196687
u2 4.427451409028434
u3 -1.531246922991154
duration 0.1342 0.0021
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 356b64a4d30754a4db4be47ec08bffa3
Parameter Value Uncertainty
Am1 0.9995 0.0052
Am2 0
a/Rs 11.1 0.17
Rp/Rs 0.1258 0.0029
ephemeris [JD] 2459868.018 0.0013
eccentricity 0.07
inclination [degrees] 89.28
omega [degrees] 0.0
orbital period [days] 4.21802091
u0 2.509350947858962
u1 -4.4060037993215655
u2 4.4281379518048025
u3 -1.5314850343578015
duration 0.1347 0.0021
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)