results

WASP-98 b

Timing Plot

Total Reductions to Date: 22

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 2.9626414713680207 1.6179161827543726e-07
Ephemeris (BJD_TDB) 2460208.5269348775 0.00017067133469686295
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 58.4290113 decimal
DEC -34.3282716 decimal
Host Star Metallicity -0.6 0.19 Kokori et al. 2023
Host Star log(g) 4.583 0.014 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 0.7 0.02 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 5525.0 130.0 K Kokori et al. 2023
a/Rs 10.92 0.08 Kokori et al. 2023
eccentricity 0.07 Bonomo et al. 2017
inclination [degrees] 86.38 0.07 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 2.96264191 2.3e-07 day Kokori et al. 2023
Rp 12.65 0.64 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1647 0 ExoFOP-TESS TOI
ephemeris [JD] 2457213.296469 6.9e-05 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2456333.391751667 9.400000000000001e-05 BJD-TDB, HJD-UTC Bonomo et al. 2017, Mancini et al. 2016, Hellier et al. 2014
2456840.00365 8e-05 BJD-TDB Kokori et al. 2022
2457213.296469 6.9e-05 BJD-TDB Kokori et al. 2023
2458413.16611 0.00013 BJD-TDB Ivshina & Winn 2022
2459168.63923 0.0003113 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0002893
Parameter Value Uncertainty
Am1 0.867 0.026
Am2 0.049 0.039
a/Rs 10.55 0.23
Rp/Rs 0.279 0.056
ephemeris [JD] 2458534.652 0.011
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 1.7369180971206848
u1 -2.808752219406252
u2 3.3394576938966063
u3 -1.2676235218492415
duration 0.06 0.0093
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 YLUA (collaborate/publish) MOBS
Light curve chart for 0007716
Parameter Value Uncertainty
Am1 0.78 0.32
Am2 0.05 0.26
a/Rs 10.79 0.23
Rp/Rs 0.329 0.098
ephemeris [JD] 2458845.733 0.011
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 1.7361200283870688
u1 -2.8069746344986988
u2 3.3378865890775065
u3 -1.2670319332274906
duration 0.0981 0.0099
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 BNIE (collaborate/publish) MOBS
Light curve chart for 0008068
Parameter Value Uncertainty
Am1 0.499 0.061
Am2 0.271 0.056
a/Rs 10.54 0.23
Rp/Rs 0.094 0.079
ephemeris [JD] 2459147.882 0.012
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 1.7357143982505598
u1 -2.8066401112131634
u2 3.337872991826136
u3 -1.2669472291253485
duration 0.0762 0.0076
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 SSTP (collaborate/publish) MOBS
Light curve chart for 0000526
Parameter Value Uncertainty
Am1 1.0144 0.0055
Am2 0.08 0.14
a/Rs 10.82 0.22
Rp/Rs 0.182 0.011
ephemeris [JD] 2459156.7908 0.0034
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 1.4260582314622894
u1 -2.2809600287524767
u2 3.0569274728272537
u3 -1.2020256299852974
duration 0.0661 0.0034
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
SG Sloan g 402.5 nm 551.5 nm
Organization Observer Code Secondary Observers
AAVSO HCHB (collaborate/publish)
Light curve chart for 0010747
Parameter Value Uncertainty
Am1 1.159 0.03
Am2 -0.053 0.014
a/Rs 10.52 0.21
Rp/Rs 0.262 0.018
ephemeris [JD] 2459553.7833 0.0024
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 1.7373281297236065
u1 -2.8102640619894697
u2 3.3415250977068927
u3 -1.268589115648426
duration 0.0965 0.0033
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 JAHB (collaborate/publish) MOBS
Light curve chart for 0002335
Parameter Value Uncertainty
Am1 0.779 0.021
Am2 0.092 0.033
a/Rs 10.54 0.23
Rp/Rs 0.153 0.033
ephemeris [JD] 2459962.6098 0.0076
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.005782942991752
u1 -3.4437095993972
u2 3.8730716073657354
u3 -1.4351448932470232
duration 0.078 0.0067
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 OAS (collaborate/publish) MOBS
Light curve chart for 0004840
Parameter Value Uncertainty
Am1 1.0009 0.0039
Am2 -0.0009 0.003
a/Rs 10.92 0.15
Rp/Rs 0.1552 0.0031
ephemeris [JD] 2460208.52694 0.00071
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.061923352759543
u1 -3.5344074216896955
u2 3.9184009222585363
u3 -1.4459167949396599
duration 0.0805 0.0017
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
N/A PanSTARRS w 404.2 nm 845.8 nm
Organization Observer Code Secondary Observers
AAVSO SZMA (collaborate/publish)
Light curve chart for ab8135c2cbd25853cad9b967b2a9dfbb
Parameter Value Uncertainty
Am1 1.001 0.011
Am2 0
a/Rs 10.95 0.14
Rp/Rs 0.1582 0.0032
ephemeris [JD] 2459162.71486 0.00068
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7035362470324795
u1 -4.833319016046233
u2 4.8269438859916685
u3 -1.697161045050846
duration 0.0803 0.0016
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 9577316ed0a0d6bb98901d37d436da5a
Parameter Value Uncertainty
Am1 1.0127 0.0045
Am2 0
a/Rs 11.04 0.17
Rp/Rs 0.155 0.0037
ephemeris [JD] 2458422.05406 0.00096
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.704056511291223
u1 -4.835667578901306
u2 4.830221511606305
u3 -1.6986103720203127
duration 0.079 0.0019
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 dc95885c0ed2f0d0d01088f9fe379059
Parameter Value Uncertainty
Am1 1.0006 0.0042
Am2 0
a/Rs 11.04 0.16
Rp/Rs 0.1561 0.0037
ephemeris [JD] 2458433.90422 0.00088
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7041794429920896
u1 -4.834903824488872
u2 4.828547309548688
u3 -1.6978228561009447
duration 0.079 0.0018
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 0aa86e2f95ee29c68c5cebdab4e091f0
Parameter Value Uncertainty
Am1 1.0 0.0099
Am2 0
a/Rs 11.09 0.14
Rp/Rs 0.1551 0.0029
ephemeris [JD] 2459147.90161 0.00068
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7047524483117535
u1 -4.835234311124269
u2 4.828140502194286
u3 -1.69765856743687
duration 0.0786 0.0016
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 4b89693287dc30174abb0b8d9dceb0fa
Parameter Value Uncertainty
Am1 0.9997 0.0039
Am2 0
a/Rs 11.1 0.17
Rp/Rs 0.1596 0.0039
ephemeris [JD] 2458425.01555 0.00091
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7036821592819313
u1 -4.833703552315187
u2 4.827452174099936
u3 -1.6974307091320373
duration 0.079 0.0019
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 2de32da7c4ce26dbf795dee7939e81e3
Parameter Value Uncertainty
Am1 1.001 0.011
Am2 0
a/Rs 11.0 0.14
Rp/Rs 0.1509 0.003
ephemeris [JD] 2459144.93829 0.0007
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.704463056315765
u1 -4.834799439010595
u2 4.82775813605356
u3 -1.6974216814195273
duration 0.0789 0.0017
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 0f80ba6906817801e47f0dcce747dc24
Parameter Value Uncertainty
Am1 1.0004 0.004
Am2 0
a/Rs 10.9 0.17
Rp/Rs 0.1547 0.0035
ephemeris [JD] 2458430.94201 0.00091
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7049963131569084
u1 -4.835584660677472
u2 4.828100629223609
u3 -1.6975122097587403
duration 0.0804 0.0019
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 1bd5f3e0cea61dab278787f76c9c7383
Parameter Value Uncertainty
Am1 1.001 0.011
Am2 0
a/Rs 10.96 0.15
Rp/Rs 0.1608 0.003
ephemeris [JD] 2459168.64009 0.00073
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.704339739211386
u1 -4.835035305066667
u2 4.828483470307943
u3 -1.697787832502652
duration 0.0803 0.0017
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 3a16e4b1f7fb5bd16ed122f93ed5fc15
Parameter Value Uncertainty
Am1 1.0001 0.0039
Am2 0
a/Rs 10.93 0.17
Rp/Rs 0.1567 0.0037
ephemeris [JD] 2458416.12816 0.00091
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7042907344285463
u1 -4.835106112605838
u2 4.82877889027997
u3 -1.6979634401482655
duration 0.0804 0.0019
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 120fcbca572fcee39297f31532fe6068
Parameter Value Uncertainty
Am1 1.0002 0.0039
Am2 0
a/Rs 10.97 0.16
Rp/Rs 0.155 0.0037
ephemeris [JD] 2458413.16732 0.00085
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.702990372447818
u1 -4.831869791987315
u2 4.8254387158869605
u3 -1.696559224442824
duration 0.0797 0.0019
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 aef0222ed9bd9188b0636b6a3ddd2ca4
Parameter Value Uncertainty
Am1 1.0 0.01
Am2 0
a/Rs 11.07 0.12
Rp/Rs 0.1549 0.0029
ephemeris [JD] 2459153.82748 0.0007
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7039919125920027
u1 -4.833981543775606
u2 4.82726253611765
u3 -1.6972728330022284
duration 0.0786 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 f7ce89be1919e336e99e8b60ff1ee2fd
Parameter Value Uncertainty
Am1 1.001 0.01
Am2 0
a/Rs 11.05 0.15
Rp/Rs 0.1586 0.0029
ephemeris [JD] 2459165.67842 0.00073
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.704140403017199
u1 -4.834485076285972
u2 4.827990050626125
u3 -1.697645305414694
duration 0.0792 0.0018
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 968580d8244b09036c1725c94b0c46cf
Parameter Value Uncertainty
Am1 1.001 0.01
Am2 0
a/Rs 11.17 0.13
Rp/Rs 0.161 0.0029
ephemeris [JD] 2459159.75218 0.00072
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.704732597414028
u1 -4.835756717572646
u2 4.8288102833231745
u3 -1.6977860912096765
duration 0.0782 0.0015
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 43a8fb05f2439add9bad4418d46059cb
Parameter Value Uncertainty
Am1 1.0 0.01
Am2 0
a/Rs 11.16 0.13
Rp/Rs 0.1574 0.0031
ephemeris [JD] 2459150.86317 0.00073
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7039065554391533
u1 -4.8342497302512
u2 4.8280035923831655
u3 -1.6976603456282593
duration 0.0779 0.0014
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 38f0399c9bc69995f4c27b5df2f80533
Parameter Value Uncertainty
Am1 1.0 0.0038
Am2 0
a/Rs 10.94 0.18
Rp/Rs 0.1561 0.0037
ephemeris [JD] 2458427.9793 0.00086
eccentricity 0.07
inclination [degrees] 86.38
omega [degrees] 0.0
orbital period [days] 2.96264191
u0 2.7027385866954563
u1 -4.831457131553964
u2 4.825264238942707
u3 -1.696545622182159
duration 0.08 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)