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HAT-P-18 b

View target in exoplanet catalog
Timing Plot
Global Light Curve

Total Reductions to Date: 16

Date Processed: 09/18/2023 at 00:07:19 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 5.50802961008147 1.6747224582127454e-07
Ephemeris (BJD_TDB) 2460090.8592578867 2.7398115695541635e-05
Time saved (hours) 0.0003  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 256.346376 decimal
DEC 33.0123251 decimal
Host Star Metallicity 0.1 0.08 Patel & Espinoza 2022
Host Star log(g) 4.57 0.04 Log10(cgs) Patel & Espinoza 2022
Host Star Radius [R_Sun] 0.75 0.04 Sol Patel & Espinoza 2022
Host Star Effective Temperature [K] 4803.0 80.0 K Patel & Espinoza 2022
a/Rs 16.52 0.06 Fu et al. 2022
eccentricity 0.087 0.15 Bonomo et al. 2017
inclination [degrees] 88.66 0.03 deg Fu et al. 2022
omega [degrees] 12.0 22.0 deg Knutson et al. 2014
orbital period [days] 5.5080232 5.6e-06 day Patel & Espinoza 2022
Rp 10.73 0.74 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1469 0 ExoFOP-TESS TOI
ephemeris [JD] 2459743.853395 2.3e-05 BJD-TDB Fu et al. 2022

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454715.022256667 0.00026333333333333336 BJD-TDB, BJD-UTC Bonomo et al. 2017, Seeliger et al. 2015, Hartman et al. 2011
2456411.49556 0.00053 BJD-TDB Ivshina & Winn 2022
2457276.25646 0.0001 BJD-TDB Kokori et al. 2022
2457507.592196 0.000194 BJD Kirk et al. 2017
2458983.744992 0.000385 BJD ExoFOP-TESS TOI
2459033.31735 0.00021 BJD Patel & Espinoza 2022
2459743.853395 2.3e-05 BJD-TDB Fu et al. 2022

Observations

Light curve chart for 0003657
Parameter Value Uncertainty
Am1 0.994 0.023
Am2 0.0056 0.0064
a/Rs 16.55 0.17
Rp/Rs 0.097 0.037
ephemeris [JD] 2456697.914 0.01
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.395705297031266
u1 -2.4052435552403773
u2 3.1034081401485762
u3 -1.09386983569508
duration 0.0807 0.01
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 SPUA (collaborate/publish) MOBS
Light curve chart for 0000671
Parameter Value Uncertainty
Am1 1.011 0.015
Am2 -0.01 0.061
a/Rs 16.22 0.17
Rp/Rs 0.138 0.022
ephemeris [JD] 2458658.7738 0.0033
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.7105090972621042
u1 -2.972186574500691
u2 3.4752376150694735
u3 -1.2135600860458111
duration 0.1141 0.0028
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 FMAA (collaborate/publish) MOBS
Light curve chart for 0000307
Parameter Value Uncertainty
Am1 0.234 0.0012
Am2 0.1 0.027
a/Rs 16.54 0.17
Rp/Rs 0.119 0.0074
ephemeris [JD] 2458983.7446 0.0017
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.71027810922536
u1 -2.9710620272504698
u2 3.4736751168689084
u3 -1.2128911470820056
duration 0.1094 0.0015
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 SGEO (collaborate/publish)
Light curve chart for 0000672
Parameter Value Uncertainty
Am1 0.992 0.014
Am2 0.0089 0.0062
a/Rs 16.22 0.17
Rp/Rs 0.128 0.012
ephemeris [JD] 2459038.8276 0.0037
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.7104391501890999
u1 -2.972018051405068
u2 3.4751227194777417
u3 -1.2135437664784097
duration 0.1129 0.0019
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 FMAA (collaborate/publish) MOBS
Light curve chart for 0001713
Parameter Value Uncertainty
Am1 1.005 0.021
Am2 -0.0033 0.0055
a/Rs 16.79 0.17
Rp/Rs 0.119 0.025
ephemeris [JD] 2459765.8828 0.0091
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.7104240521870975
u1 -2.9709297990769534
u2 3.4733145221731023
u3 -1.2128087235268268
duration 0.1076 0.003
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 FMAA (collaborate/publish) MOBS
Light curve chart for 0004024
Parameter Value Uncertainty
Am1 1.014 0.073
Am2 -0.0101 0.0033
a/Rs 16.81 0.17
Rp/Rs 0.1544 0.0074
ephemeris [JD] 2460046.8029 0.0026
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.7093915754709872
u1 -2.968333303540387
u2 3.4701766492771022
u3 -1.2112348694980408
duration 0.1114 0.0015
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 0003621
Parameter Value Uncertainty
Am1 1.0037 0.0037
Am2 -0.004 0.04
a/Rs 16.25 0.17
Rp/Rs 0.134 0.012
ephemeris [JD] 2460090.8603 0.0018
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 1.7103025168173795
u1 -2.9711381939613215
u2 3.4738687426935364
u3 -1.2130330137849166
duration 0.1132 0.002
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)
Light curve chart for 813aeb247a156468902c644411dae45d
Parameter Value Uncertainty
Am1 0.9998 0.0034
Am2 0
a/Rs 16.31 0.15
Rp/Rs 0.131 0.0021
ephemeris [JD] 2458989.25277 0.00088
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.2011276649659797
u1 -3.7507786289495813
u2 3.8990201453839344
u3 -1.3493691233004048
duration 0.1126 0.0012
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 f1d480f4738bb0dd3cfc0ff0c42cd14b
Parameter Value Uncertainty
Am1 1.0001 0.003
Am2 0
a/Rs 16.35 0.15
Rp/Rs 0.1358 0.0018
ephemeris [JD] 2459011.28586 0.00075
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.196851939658582
u1 -3.7356405322056414
u2 3.8814879105353244
u3 -1.3426992601495882
duration 0.1126 0.0012
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 699e0915d7280d57a39117d3e3fd1178
Parameter Value Uncertainty
Am1 0.9998 0.0033
Am2 0
a/Rs 16.61 0.17
Rp/Rs 0.134 0.086
ephemeris [JD] 2459016.78 0.012
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.20111234487897
u1 -3.7505675498221875
u2 3.8986836839004075
u3 -1.3492284208622762
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
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for c46ded80fc38735e4311daf682aef68d
Parameter Value Uncertainty
Am1 0.9999 0.0032
Am2 0
a/Rs 16.31 0.15
Rp/Rs 0.1341 0.0019
ephemeris [JD] 2459027.80949 0.00083
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.201152765229039
u1 -3.7510424892721823
u2 3.899429510420037
u3 -1.3495397282708654
duration 0.113 0.0012
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 815193b16f2ca7fd92c8a5d887d67b8c
Parameter Value Uncertainty
Am1 1.0007 0.0033
Am2 0
a/Rs 16.42 0.16
Rp/Rs 0.1352 0.002
ephemeris [JD] 2459016.79237 0.00082
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.201459142085972
u1 -3.751620557391934
u2 3.8998927289665777
u3 -1.3497312555476855
duration 0.1124 0.0013
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 2a3dfc0365b6f2d64d0565741b778f47
Parameter Value Uncertainty
Am1 1.0002 0.003
Am2 0
a/Rs 16.77 0.15
Rp/Rs 0.1375 0.0026
ephemeris [JD] 2458983.74532 0.00092
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.2015985597942445
u1 -3.752581177197003
u2 3.9013205399783963
u3 -1.3503378644414314
duration 0.1099 0.0011
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 a6c62d6ce221a2402837eea14ecc5fa1
Parameter Value Uncertainty
Am1 1.0001 0.0026
Am2 0
a/Rs 16.42 0.16
Rp/Rs 0.1345 0.0018
ephemeris [JD] 2459005.77786 0.00071
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.1971982759036863
u1 -3.7368478518411568
u2 3.8829739974983055
u3 -1.3433243637000136
duration 0.112 0.0013
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 2238bca15375f6882873519693c5fb65
Parameter Value Uncertainty
Am1 0.9999 0.0032
Am2 0
a/Rs 16.22 0.14
Rp/Rs 0.1327 0.002
ephemeris [JD] 2459033.31873 0.00079
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.196888568701111
u1 -3.7359452427653688
u2 3.881992351734062
u3 -1.3429356198236104
duration 0.1133 0.0012
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 c6029e827dcfb23f09f3182cf9a51ec0
Parameter Value Uncertainty
Am1 0.9999 0.0027
Am2 0
a/Rs 16.22 0.14
Rp/Rs 0.1374 0.0018
ephemeris [JD] 2458994.76048 0.00078
eccentricity 0.087
inclination [degrees] 88.66
omega [degrees] 12.0
orbital period [days] 5.5080232
u0 2.1973745635298303
u1 -3.73772499118412
u2 3.884213602054239
u3 -1.343863116520656
duration 0.1137 0.0012
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)

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