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HAT-P-4 b

View target in exoplanet catalog
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Total Reductions to Date: 16

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.0565235889095033 1.6268791666589322e-07
Ephemeris (BJD_TDB) 2460123.5097576687 0.00027410854595596236
Time saved (hours) 0.0001  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 229.99122 decimal
DEC 36.229545 decimal
Host Star Metallicity 0.33 0.08 Ment et al. 2018
Host Star log(g) 4.07 0.08 Log10(cgs) ExoFOP-TESS TOI
Host Star Radius [R_Sun] 1.59 0.07 Sol Ment et al. 2018
Host Star Effective Temperature [K] 5860.0 80.0 K Kokori et al. 2022
a/Rs 6.0024 0.0989 Southworth 2011
eccentricity 0.084 0.014 Ment et al. 2018
inclination [degrees] 89.91 0.09 deg Bonomo et al. 2017
omega [degrees] 97.4 9.7 deg Ment et al. 2018
orbital period [days] 3.05652372 3.6e-07 day Ivshina & Winn 2022
Rp 15.17 0.71 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.0938 0 ExoFOP-TESS TOI
ephemeris [JD] 2455285.03214 0.00024 BJD-TDB Ivshina & Winn 2022

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454245.81521 0.0002 BJD-TDB Bonomo et al. 2017
2454248.8716 0.0006 HJD Kovacs et al. 2007
2454502.56227 0.00021 BJD Christiansen et al. 2011
2454740.97205 0.0002 BJD-TDB Kokori et al. 2022
2455285.03215 0.00048499999999999997 BJD-TDB, HJD-UTC Ivshina & Winn 2022, Winn et al. 2011
2459716.992394 0.000386 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001633
Parameter Value Uncertainty
Am1 1.3036 0.0084
Am2 -0.2286 0.0099
a/Rs 6.13 0.28
Rp/Rs 0.122 0.044
ephemeris [JD] 2459762.819 0.012
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.3728579008107658
u1 -4.2418402471558245
u2 4.442209092456861
u3 -1.573226679917728
duration 0.153 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
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0003910
Parameter Value Uncertainty
Am1 1.0052 0.0024
Am2 -0.0047 0.0019
a/Rs 5.63 0.19
Rp/Rs 0.0855 0.0066
ephemeris [JD] 2460123.5105 0.0038
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.102944253700266
u1 -3.6702282123984373
u2 4.009305586264861
u3 -1.4420215678233808
duration 0.1689 0.0048
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 PJEF (collaborate/publish)
Light curve chart for 31350abe067ae9ecf92a9ae83a62535f
Parameter Value Uncertainty
Am1 1.0 0.0015
Am2 0
a/Rs 5.509 0.05
Rp/Rs 0.0849 0.0014
ephemeris [JD] 2458977.3137 0.0011
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.6304370280641924
u1 -4.680293274084311
u2 4.668648627840424
u3 -1.6187923122520198
duration 0.1777 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 614ce7794182c8ebf49acbe91f96c3ad
Parameter Value Uncertainty
Am1 1.0001 0.0015
Am2 0
a/Rs 5.538 0.051
Rp/Rs 0.0836 0.0013
ephemeris [JD] 2459701.7079 0.001
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.629917704534136
u1 -4.67828727365787
u2 4.666105240156251
u3 -1.617735601502131
duration 0.1761 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 9ae62d66394c8cdfedb15256d93ab4ac
Parameter Value Uncertainty
Am1 0.9996 0.0015
Am2 0
a/Rs 5.638 0.086
Rp/Rs 0.0812 0.0013
ephemeris [JD] 2459716.9917 0.0013
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.630599271770638
u1 -4.681009326560772
u2 4.669569972732714
u3 -1.6191598483605656
duration 0.1729 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 1d726594607f3e365b4e4b13b34667eb
Parameter Value Uncertainty
Am1 0.9999 0.002
Am2 0
a/Rs 5.563 0.074
Rp/Rs 0.0831 0.0016
ephemeris [JD] 2458965.0874 0.0014
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.629558928984817
u1 -4.6759948096037185
u2 4.662663843203795
u3 -1.6162278931057874
duration 0.1755 0.0024
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 3ba588d273beb30339fa2c02ab2d16db
Parameter Value Uncertainty
Am1 1.0003 0.0017
Am2 0
a/Rs 5.509 0.051
Rp/Rs 0.0857 0.0014
ephemeris [JD] 2458974.2563 0.0013
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.629986753312277
u1 -4.6785137620091195
u2 4.666446419989865
u3 -1.6179193417575526
duration 0.1774 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 732d362c78ec5313319b473d59bc52a9
Parameter Value Uncertainty
Am1 0.9999 0.0014
Am2 0
a/Rs 5.559 0.064
Rp/Rs 0.0832 0.0014
ephemeris [JD] 2459689.4825 0.0012
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.629582028157582
u1 -4.677415853563195
u2 4.665207523895072
u3 -1.617373628972449
duration 0.1755 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 d563d6557380d9962c5dba3ba2c53476
Parameter Value Uncertainty
Am1 0.9998 0.0015
Am2 0
a/Rs 5.571 0.061
Rp/Rs 0.0837 0.0014
ephemeris [JD] 2458962.0307 0.0011
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.630734124541321
u1 -4.680746627279531
u2 4.6688101462545415
u3 -1.6187975739456388
duration 0.1749 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 16250d9287836d7c61f0b32bd6cc502b
Parameter Value Uncertainty
Am1 0.9997 0.002
Am2 0
a/Rs 5.508 0.057
Rp/Rs 0.0824 0.0019
ephemeris [JD] 2458968.1432 0.0016
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.6302302302862572
u1 -4.678966248752672
u2 4.666654913808847
u3 -1.6179188258038546
duration 0.1772 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 97cf5a5788f1d17343c3bbd7e3a3a441
Parameter Value Uncertainty
Am1 1.0001 0.0013
Am2 0
a/Rs 5.542 0.056
Rp/Rs 0.0837 0.0013
ephemeris [JD] 2459677.2582 0.0011
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.629922502262069
u1 -4.678138942315113
u2 4.665840048734407
u3 -1.6176235391549278
duration 0.1764 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 3e0eb71aa7715d7197339a6d369c54d6
Parameter Value Uncertainty
Am1 1.0 0.0015
Am2 0
a/Rs 5.51 0.046
Rp/Rs 0.0842 0.0014
ephemeris [JD] 2458980.3691 0.0011
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.6301008333232017
u1 -4.679178120038013
u2 4.667372454481997
u3 -1.6182950982179167
duration 0.1773 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 b1c79f656d9eb8b445a1f6b45db42981
Parameter Value Uncertainty
Am1 1.0 0.0014
Am2 0
a/Rs 5.521 0.055
Rp/Rs 0.0826 0.0013
ephemeris [JD] 2459674.2011 0.0011
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.629794503324807
u1 -4.677545656158826
u2 4.665042597264202
u3 -1.6172913749156308
duration 0.1768 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 92e7387900897f5adffe2c5401eefb34
Parameter Value Uncertainty
Am1 0.9999 0.0013
Am2 0
a/Rs 5.556 0.063
Rp/Rs 0.0837 0.0014
ephemeris [JD] 2459686.427 0.0012
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.630493253032327
u1 -4.680100991732685
u2 4.6681575368106865
u3 -1.6185497285493602
duration 0.1757 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 8d1f486b30dd90adf846daa8effcff84
Parameter Value Uncertainty
Am1 1.0004 0.0017
Am2 0
a/Rs 5.523 0.06
Rp/Rs 0.0832 0.0015
ephemeris [JD] 2459713.9363 0.0014
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.630313421700194
u1 -4.679515044944018
u2 4.667426584996255
u3 -1.6182248922023552
duration 0.1768 0.002
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 88e26f5f2f50b412ebdc3ac9cb0abc3c
Parameter Value Uncertainty
Am1 1.0002 0.0016
Am2 0
a/Rs 5.553 0.069
Rp/Rs 0.0845 0.0014
ephemeris [JD] 2459671.1453 0.0013
eccentricity 0.084
inclination [degrees] 89.91
omega [degrees] 97.4
orbital period [days] 3.05652372
u0 2.6297932644189004
u1 -4.677636863513216
u2 4.665183573197237
u3 -1.6173399045862684
duration 0.1761 0.0022
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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