results

HAT-P-55 b

Timing Plot

Total Reductions to Date: 25

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.5852325180090756 4.76224857116679e-07
Ephemeris (BJD_TDB) 2460136.805901036 0.00026725512294089937
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 264.2735096 decimal
DEC 25.7311468 decimal
Host Star Metallicity 0.003 0.049 Kang et al. 2024
Host Star log(g) 4.363 0.014 Log10(cgs) Kang et al. 2024
Host Star Radius [R_Sun] 1.105 0.018 Sol Kang et al. 2024
Host Star Effective Temperature [K] 5804.0 37.0 K Kang et al. 2024
a/Rs 9.06 0.16 Kang et al. 2024
eccentricity 0.17 Bonomo et al. 2017
inclination [degrees] 86.8 0.22 deg Kang et al. 2024
omega [degrees] 0.0 deg Kang et al. 2024
orbital period [days] 3.5852313 5.1e-07 day Kang et al. 2024
Rp 14.84 0.26 R_Earth Kang et al. 2024
Rp/Rs 0.13 0 ExoFOP-TESS TOI
ephemeris [JD] 2458311.92255 0.00013 BJD-TDB Kang et al. 2024

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2456730.83468 0.00027 BJD, BJD-TDB Bonomo et al. 2017, Juncher et al. 2015
2457720.3595 0.0003 BJD-TDB Kokori et al. 2022
2458279.65563 0.0002 BJD-TDB Kokori et al. 2023
2458311.92255 0.00013 BJD-TDB Kang et al. 2024
2458989.5314 0.00039 BJD-TDB Ivshina & Winn 2022
2459032.55435 0.00041 BJD Patel & Espinoza 2022
2459767.525934 0.0010416 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0000848
Parameter Value Uncertainty
Am1 1.0168 0.0027
Am2 -0.0135 0.0032
a/Rs 9.8 0.48
Rp/Rs 0.064 0.0045
ephemeris [JD] 2459032.5332 0.0047
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.1809958294179888
u1 -3.852541984233306
u2 4.204771980617414
u3 -1.5332257631461124
duration 0.1056 0.0069
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO VJEB (collaborate/publish)
Light curve chart for 0001616
Parameter Value Uncertainty
Am1 1.1022 0.0075
Am2 -0.079 0.027
a/Rs 9.59 0.18
Rp/Rs 0.1498 0.006
ephemeris [JD] 2459756.7691 0.0017
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.4659389679987624
u1 -4.489537935590936
u2 4.716500250201115
u3 -1.6929012123276106
duration 0.1208 0.0029
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 0001787
Parameter Value Uncertainty
Am1 0.994 0.011
Am2 0.0038 0.0055
a/Rs 8.89 0.37
Rp/Rs 0.116 0.013
ephemeris [JD] 2459799.7924 0.0035
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 1.7942832495306023
u1 -3.1553911543714563
u2 3.7959591475523387
u3 -1.4348511861472852
duration 0.1268 0.0059
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 0003575
Parameter Value Uncertainty
Am1 0.99 0.013
Am2 0.0075 0.0079
a/Rs 9.83 0.44
Rp/Rs 0.097 0.023
ephemeris [JD] 2460075.862 0.0096
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.3959733377977788
u1 -4.2908221311598265
u2 4.5153726403024095
u3 -1.6205237796560663
duration 0.1106 0.0074
Not 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 0004052
Parameter Value Uncertainty
Am1 1.0216 0.0032
Am2 -0.0184 0.0055
a/Rs 8.49 0.33
Rp/Rs 0.1103 0.0059
ephemeris [JD] 2460136.8087 0.0034
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.056545672099654
u1 -3.771436331283667
u2 4.313924618555764
u3 -1.5990338950892649
duration 0.1341 0.0068
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 8abe7980235e941441cc002c540506d8
Parameter Value Uncertainty
Am1 1.001 0.0055
Am2 0
a/Rs 9.57 0.21
Rp/Rs 0.118 0.0035
ephemeris [JD] 2459738.8426 0.0018
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7255371944331355
u1 -4.967391184433708
u2 4.99856659975254
u3 -1.7567125352675212
duration 0.1167 0.0034
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 b027ab8a64a5f24fbf4f65d9e10c3f6d
Parameter Value Uncertainty
Am1 1.0016 0.0056
Am2 0
a/Rs 9.45 0.23
Rp/Rs 0.1245 0.0034
ephemeris [JD] 2459763.9432 0.0016
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725655765585847
u1 -4.96811983705528
u2 4.99962792211887
u3 -1.7571637761491763
duration 0.1198 0.0039
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 a65d47ddfb779471881d5d21879cffa4
Parameter Value Uncertainty
Am1 1.0008 0.0055
Am2 0
a/Rs 9.06 0.25
Rp/Rs 0.127 0.0034
ephemeris [JD] 2459760.3555 0.0018
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7254517213357143
u1 -4.966841297926014
u2 4.997805119993814
u3 -1.7564154689304141
duration 0.1263 0.0042
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 d91646a60412f1e1e0e24c68399fbcbd
Parameter Value Uncertainty
Am1 1.0007 0.005
Am2 0
a/Rs 9.03 0.23
Rp/Rs 0.1156 0.0033
ephemeris [JD] 2459746.0165 0.0016
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725754662401406
u1 -4.9680657125458625
u2 4.99934329742778
u3 -1.7570321727873024
duration 0.1258 0.004
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 d975ef8049d17ee22bb7b869bf7940bc
Parameter Value Uncertainty
Am1 1.0004 0.0062
Am2 0
a/Rs 8.99 0.2
Rp/Rs 0.1309 0.0037
ephemeris [JD] 2459032.5537 0.0015
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7260404467772354
u1 -4.969386615942788
u2 5.00113994508413
u3 -1.757793701395785
duration 0.1282 0.0036
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 3aab707dc18b9792f9ff8cfabe084094
Parameter Value Uncertainty
Am1 1.0 0.0043
Am2 0
a/Rs 9.2 0.18
Rp/Rs 0.1173 0.003
ephemeris [JD] 2459742.4282 0.0013
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725847953925642
u1 -4.96877670869629
u2 5.000431492311727
u3 -1.7575026630288435
duration 0.1226 0.0029
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 79ee15c358129c3e93602e2ce0ac8b27
Parameter Value Uncertainty
Am1 1.0013 0.0055
Am2 0
a/Rs 9.08 0.22
Rp/Rs 0.1275 0.0029
ephemeris [JD] 2459025.3864 0.0016
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725620397678474
u1 -4.967804648789883
u2 4.999180111342468
u3 -1.75699578573747
duration 0.1263 0.004
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 d322c474c5f702d0c39d40cf2e8ca871
Parameter Value Uncertainty
Am1 0.9987 0.0039
Am2 0
a/Rs 8.74 0.23
Rp/Rs 0.1125 0.0028
ephemeris [JD] 2459767.5251 0.0017
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725917937865881
u1 -4.969140987940956
u2 5.0009306328942165
u3 -1.7577075082994673
duration 0.1301 0.0041
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 b3598bd2d7806b8af1eafe3640342c7a
Parameter Value Uncertainty
Am1 1.0003 0.0051
Am2 0
a/Rs 9.18 0.22
Rp/Rs 0.1241 0.0033
ephemeris [JD] 2459011.0421 0.0016
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.726177668399527
u1 -4.970110225836611
u2 5.0021309870688775
u3 -1.7581983550942337
duration 0.1241 0.0038
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 f54a5c2740a46d6d15a1cf7eadcf2d57
Parameter Value Uncertainty
Am1 1.0003 0.006
Am2 0
a/Rs 9.19 0.21
Rp/Rs 0.121 0.0036
ephemeris [JD] 2459000.2871 0.0016
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7257677617151423
u1 -4.968150364503897
u2 4.999484487808104
u3 -1.7571018105212253
duration 0.1232 0.0035
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 f4d4a6f5a51f678f743d24ae740a2fa1
Parameter Value Uncertainty
Am1 1.0007 0.0051
Am2 0
a/Rs 9.13 0.24
Rp/Rs 0.124 0.0034
ephemeris [JD] 2459003.871 0.0017
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725758306743104
u1 -4.9684256152017445
u2 5.000050151680702
u3 -1.7573827687155075
duration 0.1249 0.004
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 95e2ae73de752c18c2c24da2a129a1f6
Parameter Value Uncertainty
Am1 0.9996 0.0048
Am2 0
a/Rs 9.38 0.21
Rp/Rs 0.1241 0.0032
ephemeris [JD] 2459728.0907 0.0015
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725819925365254
u1 -4.968565376861984
u2 5.000069245139608
u3 -1.757323719136041
duration 0.1204 0.0035
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 947e7afcdc739dc528707092511c6461
Parameter Value Uncertainty
Am1 1.0005 0.0052
Am2 0
a/Rs 9.54 0.2
Rp/Rs 0.1245 0.0034
ephemeris [JD] 2458989.5321 0.0015
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725747510057902
u1 -4.968045666577126
u2 4.999347828198032
u3 -1.7570495971827196
duration 0.1181 0.0031
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 fc18b2249c359cf74d83f49df277ee72
Parameter Value Uncertainty
Am1 1.0005 0.0054
Am2 0
a/Rs 8.93 0.24
Rp/Rs 0.1251 0.0034
ephemeris [JD] 2458993.1194 0.0018
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7257621117866204
u1 -4.968478673429031
u2 5.000063504628503
u3 -1.75734686847934
duration 0.1282 0.0042
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 67f92f3fc0de92e63d5a10ab5fa3584a
Parameter Value Uncertainty
Am1 0.9973 0.005
Am2 0
a/Rs 9.12 0.24
Rp/Rs 0.1264 0.0032
ephemeris [JD] 2459021.7977 0.0017
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7262330772906105
u1 -4.9702154896946285
u2 5.002286388661409
u3 -1.758303901717515
duration 0.1255 0.0042
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 27982ae49d7c08c632778e80ca02ec1d
Parameter Value Uncertainty
Am1 1.0002 0.0046
Am2 0
a/Rs 8.94 0.21
Rp/Rs 0.1164 0.0032
ephemeris [JD] 2459753.185 0.0015
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725185131652129
u1 -4.965865294210641
u2 4.996577197955284
u3 -1.7558969609419703
duration 0.1272 0.0039
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 071d0ebdda8031af9c6b830cdc82ed14
Parameter Value Uncertainty
Am1 0.9996 0.0066
Am2 0
a/Rs 8.82 0.24
Rp/Rs 0.1247 0.0043
ephemeris [JD] 2459028.9691 0.0019
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7258223878429364
u1 -4.9685648410692895
u2 5.000122719156478
u3 -1.7573801914224898
duration 0.1306 0.0045
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 a0a739e0e2906fb8bd274bd4df4a0528
Parameter Value Uncertainty
Am1 1.0002 0.006
Am2 0
a/Rs 9.5 0.21
Rp/Rs 0.1268 0.0039
ephemeris [JD] 2459014.6281 0.0017
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7259433403228512
u1 -4.968510428713141
u2 4.999801005929152
u3 -1.7572338430360213
duration 0.119 0.0033
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 61cdc1d62a071cc1b8ea04e6594e682b
Parameter Value Uncertainty
Am1 1.0005 0.005
Am2 0
a/Rs 9.19 0.2
Rp/Rs 0.1224 0.0033
ephemeris [JD] 2459007.4573 0.0014
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.725923087414458
u1 -4.968836142544669
u2 5.000420292801044
u3 -1.7575071631587638
duration 0.1235 0.0033
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 380fa85f707e550e21c1aa4101434bf9
Parameter Value Uncertainty
Am1 0.9998 0.0063
Am2 0
a/Rs 9.28 0.25
Rp/Rs 0.1235 0.0042
ephemeris [JD] 2459018.216 0.0019
eccentricity 0.17
inclination [degrees] 86.8
omega [degrees] 0.0
orbital period [days] 3.5852313
u0 2.7261446780363614
u1 -4.970019014317572
u2 5.002062589227542
u3 -1.758188178409791
duration 0.1221 0.0041
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)