results

Kepler-17 b

Timing Plot

Total Reductions to Date: 23

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.4857097404121464 1.6385787679151985e-07
Ephemeris (BJD_TDB) 2460223.72005785 0.0005614047890051147
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 298.3952437 decimal
DEC 47.8149865 decimal
Host Star Metallicity 0.26 0.1 Gajdoš et al. 2019
Host Star log(g) 4.44616 0.04 Log10(cgs) Gajdoš et al. 2019
Host Star Radius [R_Sun] 1.01034 0.027 Sol Gajdoš et al. 2019
Host Star Effective Temperature [K] 5781.0 85.0 K Gajdoš et al. 2019
a/Rs 5.6229 0.0909 Q1-Q17 DR25 KOI Table
eccentricity 0.0 Q1-Q17 DR25 KOI Table
inclination [degrees] 88.93 0.15 deg Q1-Q17 DR25 KOI Table
omega [degrees] 0.0 deg Gajdoš et al. 2019
orbital period [days] 1.485710994 1.7e-08 day Gajdoš et al. 2019
Rp 14.42 0.39 R_Earth Fulton & Petigura 2018
Rp/Rs 0.1443 0 Q1-Q17 DR25 KOI Table
ephemeris [JD] 2455185.67875 7e-06 BJD Gajdoš et al. 2019

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454965.79345965 3.195e-05 BJD, JD Q1-Q17 DR25 Supplemental KOI Table, Q1-Q17 DR25 KOI Table, Holczer et al. 2016, Morton et al. 2016, Q1-Q17 DR24 KOI Table, Q1-Q16 KOI Table, Q1-Q12 KOI Table, Q1-Q8 KOI Table
2455185.6782726664 1.7666666666666668e-05 BJD, BJD-TDB, BJD-UTC Gajdoš et al. 2019, Bonomo et al. 2017, Désert et al. 2011
2459825.552259 0.00090277 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0010589
Parameter Value Uncertainty
Am1 0.92 0.12
Am2 0.08 0.31
a/Rs 6.06 0.26
Rp/Rs 0.288 0.085
ephemeris [JD] 2458238.822 0.011
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7611325270127458
u1 -3.1210051387821793
u2 3.7672626329944947
u3 -1.4073899650884734
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
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO JAHB (collaborate/publish) MOBS
Light curve chart for 0013025
Parameter Value Uncertainty
Am1 0.695 0.027
Am2 0.32 0.49
a/Rs 6.08 0.26
Rp/Rs 0.138 0.05
ephemeris [JD] 2458275.978 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.760441911231909
u1 -3.1194817801155397
u2 3.765507051750319
u3 -1.4064671267562603
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
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO DKOA (collaborate/publish) MOBS
Light curve chart for 0009136
Parameter Value Uncertainty
Am1 0.895 0.052
Am2 0.1 0.25
a/Rs 5.18 0.26
Rp/Rs 0.23 0.053
ephemeris [JD] 2458278.926 0.0065
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7613108920310436
u1 -3.1216427987105546
u2 3.7681124840825677
u3 -1.4077805212538053
duration 0.1054 0.0069
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 LDAH (collaborate/publish) MOBS
Light curve chart for 0010329
Parameter Value Uncertainty
Am1 2.02 0.11
Am2 -0.65 0.18
a/Rs 5.2 0.26
Rp/Rs 0.122 0.045
ephemeris [JD] 2458281.88 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7607479705157012
u1 -3.119604654735449
u2 3.765512644627138
u3 -1.4066559042968794
duration 0.1019 0.007
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 PJOO (collaborate/publish) MOBS
Light curve chart for 0010886
Parameter Value Uncertainty
Am1 1.328 0.069
Am2 -0.24 0.059
a/Rs 5.94 0.26
Rp/Rs 0.211 0.032
ephemeris [JD] 2458290.8064 0.0072
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7613626196427978
u1 -3.1219727405335145
u2 3.768631827341936
u3 -1.4080216502942289
duration 0.0968 0.0048
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 KPRB (collaborate/publish) MOBS
Light curve chart for 0011865
Parameter Value Uncertainty
Am1 1.19 0.087
Am2 -0.124 0.052
a/Rs 5.18 0.26
Rp/Rs 0.176 0.064
ephemeris [JD] 2458296.768 0.011
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7604770650479513
u1 -3.119265863934891
u2 3.765026412564016
u3 -1.406237557573811
duration 0.099 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 MANS (collaborate/publish) MOBS
Light curve chart for 0009799
Parameter Value Uncertainty
Am1 1.066 0.094
Am2 -0.034 0.038
a/Rs 6.06 0.25
Rp/Rs 0.288 0.027
ephemeris [JD] 2458299.7496 0.0035
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7613808544738152
u1 -3.121662577189392
u2 3.7677920564558756
u3 -1.4075102775958217
duration 0.1005 0.0049
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 SGDA (collaborate/publish) MOBS
Light curve chart for 0005924
Parameter Value Uncertainty
Am1 0.533 0.091
Am2 0.4 0.16
a/Rs 6.04 0.27
Rp/Rs 0.287 0.084
ephemeris [JD] 2458590.931 0.011
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7606578769221926
u1 -3.120264645709225
u2 3.7665307630406737
u3 -1.4069239381279588
duration 0.0991 0.0081
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 MKEE (collaborate/publish) MOBS
Light curve chart for 0008776
Parameter Value Uncertainty
Am1 1.42 0.15
Am2 -0.232 0.042
a/Rs 5.18 0.26
Rp/Rs 0.113 0.061
ephemeris [JD] 2458593.908 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7612332712585252
u1 -3.1208390513325863
u2 3.7668673822264807
u3 -1.4072615460217213
duration 0.102 0.0079
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 WSTB (collaborate/publish) MOBS
Light curve chart for 0011390
Parameter Value Uncertainty
Am1 0.19552 0.00013
Am2 0.97 0.46
a/Rs 5.96 0.25
Rp/Rs 0.269 0.083
ephemeris [JD] 2458595.403 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.761376386110971
u1 -3.1218456655039533
u2 3.7680135716120975
u3 -1.4075442360713377
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
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO GDAQ (collaborate/publish) MOBS
Light curve chart for 0008269
Parameter Value Uncertainty
Am1 2.87 0.12
Am2 -1.0 0.25
a/Rs 5.54 0.26
Rp/Rs 0.125 0.044
ephemeris [JD] 2458639.961 0.011
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7604311391873078
u1 -3.1192609800004503
u2 3.7651715351332067
u3 -1.406341638214636
duration 0.075 0.011
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 GDAP (collaborate/publish) MOBS
Light curve chart for 0006236
Parameter Value Uncertainty
Am1 0.976 0.049
Am2 0.03 0.28
a/Rs 6.02 0.26
Rp/Rs 0.161 0.053
ephemeris [JD] 2458642.949 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7610526852280604
u1 -3.1204310008203677
u2 3.7664007965771082
u3 -1.4070224248610552
duration 0.072 0.012
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 PPRB (collaborate/publish) MOBS
Light curve chart for 0009134
Parameter Value Uncertainty
Am1 0.849 0.037
Am2 0.17 0.27
a/Rs 6.03 0.26
Rp/Rs 0.152 0.054
ephemeris [JD] 2458642.949 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.761270599351699
u1 -3.120973322836212
u2 3.7670217188845045
u3 -1.4073189392669936
duration 0.068 0.011
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 KSTG (collaborate/publish) MOBS
Light curve chart for 0007980
Parameter Value Uncertainty
Am1 1.39 0.16
Am2 -0.191 0.029
a/Rs 6.07 0.26
Rp/Rs 0.187 0.074
ephemeris [JD] 2458828.627 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7606898169873981
u1 -3.119556483518681
u2 3.7652207168996874
u3 -1.4063539942622443
duration 0.0927 0.0072
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 WELC (collaborate/publish) MOBS
Light curve chart for 0011322
Parameter Value Uncertainty
Am1 1.181 0.042
Am2 -0.148 0.078
a/Rs 5.6 0.26
Rp/Rs 0.161 0.03
ephemeris [JD] 2459012.877 0.01
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7610470319704352
u1 -3.1202568766467196
u2 3.766198421982204
u3 -1.4069885211851898
duration 0.0984 0.0054
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 HDOD (collaborate/publish) MOBS
Light curve chart for 0001565
Parameter Value Uncertainty
Am1 0.9515 0.0074
Am2 0.071 0.069
a/Rs 5.17 0.25
Rp/Rs 0.155 0.023
ephemeris [JD] 2459737.8831 0.0043
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.4025157072034125
u1 -4.334063788699503
u2 4.556204600132271
u3 -1.6246564507434424
duration 0.0923 0.0013
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 0001742
Parameter Value Uncertainty
Am1 0.997 0.0093
Am2 0.0026 0.0084
a/Rs 5.29 0.25
Rp/Rs 0.127 0.0071
ephemeris [JD] 2459786.9307 0.0031
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 1.7613979062773304
u1 -3.121361813341981
u2 3.767432570423994
u3 -1.4074686072202236
duration 0.1011 0.005
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 0001792
Parameter Value Uncertainty
Am1 0.7226 0.0093
Am2 0.301 0.055
a/Rs 5.95 0.26
Rp/Rs 0.024 0.027
ephemeris [JD] 2459798.795 0.012
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.88350192762174
u1 -5.269666161329779
u2 5.182308738640331
u3 -1.7961444277098746
duration 0.0809 0.0052
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
IJ Johnson I 780.0 nm 1020.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0003838
Parameter Value Uncertainty
Am1 1.021 0.016
Am2 -0.017 0.011
a/Rs 6.05 0.22
Rp/Rs 0.14 0.012
ephemeris [JD] 2460113.7797 0.0033
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.0214177429718574
u1 -3.6942311535606533
u2 4.218352913800817
u3 -1.545539440353664
duration 0.0892 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 MBEB (collaborate/publish)
Light curve chart for 0004335
Parameter Value Uncertainty
Am1 0.962 0.013
Am2 0.035 0.038
a/Rs 5.83 0.25
Rp/Rs 0.154 0.012
ephemeris [JD] 2460162.8085 0.0029
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.0212144245628445
u1 -3.6935170771196395
u2 4.217487756843346
u3 -1.5451850414410866
duration 0.0939 0.0042
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 0004336
Parameter Value Uncertainty
Am1 1.107 0.01
Am2 -0.097 0.087
a/Rs 6.05 0.24
Rp/Rs 0.139 0.018
ephemeris [JD] 2460168.7535 0.0033
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.0214650079794527
u1 -3.6939297894566923
u2 4.217940585503084
u3 -1.545475741173631
duration 0.0892 0.004
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 0004309
Parameter Value Uncertainty
Am1 1.052 0.014
Am2 -0.046 0.021
a/Rs 5.29 0.25
Rp/Rs 0.147 0.013
ephemeris [JD] 2460177.6696 0.004
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.0209244420458803
u1 -3.6918368110643405
u2 4.215293659295833
u3 -1.5443812274646027
duration 0.1032 0.0052
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 NANF (collaborate/publish)
Light curve chart for 0004690
Parameter Value Uncertainty
Am1 0.964 0.016
Am2 0.03 0.012
a/Rs 6.06 0.25
Rp/Rs 0.14 0.016
ephemeris [JD] 2460223.7411 0.0034
eccentricity 0.0
inclination [degrees] 88.93
omega [degrees] 0.0
orbital period [days] 1.485710994
u0 2.0207192184560205
u1 -3.6917853194261996
u2 4.2153597357862145
u3 -1.5442935720022803
duration 0.0892 0.0041
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)