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HAT-P-26 b

View target in exoplanet catalog
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Total Reductions to Date: 7

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.234487410747128 4.021930068508433e-07
Ephemeris (BJD_TDB) 2460055.7516368143 0.00030814936103280697
Time saved (hours) 0.0004  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 213.1565508 decimal
DEC 4.0594175 decimal
Host Star Metallicity -0.04 0.08 Kokori et al. 2022
Host Star log(g) 4.56 0.06 Log10(cgs) Kokori et al. 2022
Host Star Radius [R_Sun] 0.79 0.1 Sol Kokori et al. 2022
Host Star Effective Temperature [K] 5079.0 88.0 K Kokori et al. 2022
a/Rs 13.09 1.19 Stassun et al. 2017
eccentricity 0.12 0.06 Stassun et al. 2017
inclination [degrees] 88.6 0.7 deg Stassun et al. 2017
omega [degrees] 46.0 33.0 deg Knutson et al. 2014
orbital period [days] 4.2345026 1.2e-06 day Ivshina & Winn 2022
Rp 7.1 0.49 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.0783 0 ExoFOP-TESS TOI
ephemeris [JD] 2456545.36124 0.00028 BJD-TDB Ivshina & Winn 2022

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2455304.6517000003 0.00030000000000000003 BJD-TDB, BJD-UTC Stevenson et al. 2016, Hartman et al. 2011
2456545.36124 0.00028 BJD-TDB Ivshina & Winn 2022
2456892.59046 0.0001 BJD-TDB Kokori et al. 2022
2459666.190171 0.00122 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001466
Parameter Value Uncertainty
Am1 1.009 0.012
Am2 -0.009 0.059
a/Rs 18.81 3.64
Rp/Rs 0.105 0.025
ephemeris [JD] 2459712.748 0.01
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 1.5015887940845585
u1 -2.565152414374669
u2 3.250773246433489
u3 -1.187209577703082
duration 0.066 0.015
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 LPAC (collaborate/publish)
Light curve chart for 0001526
Parameter Value Uncertainty
Am1 0.933 0.019
Am2 0.0486 0.0051
a/Rs 14.06 0.71
Rp/Rs 0.1462 0.0074
ephemeris [JD] 2459729.68637 0.00039
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 1.5520812980629473
u1 -2.685402491081387
u2 3.345303064635412
u3 -1.211981821768072
duration 0.0966 0.0053
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
NA Custom 385.0 nm 700.0 nm
Organization Observer Code Secondary Observers
AAVSO NANF (collaborate/publish)
Light curve chart for 0003309
Parameter Value Uncertainty
Am1 0.999 0.0041
Am2 0.0008 0.0015
a/Rs 11.55 0.77
Rp/Rs 0.087 0.0042
ephemeris [JD] 2460055.7577 0.0036
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 1.7991111439194425
u1 -3.1289817666619246
u2 3.622492231506003
u3 -1.29262155478418
duration 0.1131 0.0077
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 0003572
Parameter Value Uncertainty
Am1 1.0203 0.0035
Am2 -0.0101 0.0062
a/Rs 11.3 2.86
Rp/Rs 0.077 0.014
ephemeris [JD] 2460085.3998 0.0072
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 1.8245192004061441
u1 -3.0433818842614304
u2 3.462861049515688
u3 -1.2439983140597515
duration 0.107 0.02
Not 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 KADB (collaborate/publish) PERC
Light curve chart for 926af73e2711f1c27ddb787524d536a1
Parameter Value Uncertainty
Am1 1.0 0.0016
Am2 0
a/Rs 12.87 0.32
Rp/Rs 0.0701 0.0019
ephemeris [JD] 2459674.6588 0.0011
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 2.370043132497862
u1 -4.105180277422052
u2 4.189447331141715
u3 -1.4543101237898948
duration 0.0988 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 6cf6ed67e6058f353dcbbd020d8a3dd9
Parameter Value Uncertainty
Am1 1.0 0.0017
Am2 0
a/Rs 12.74 0.32
Rp/Rs 0.0727 0.002
ephemeris [JD] 2459687.3614 0.0011
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 2.3707172611483314
u1 -4.106526680576176
u2 4.190442749580276
u3 -1.4546332677099683
duration 0.1001 0.0028
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 5b83c6b5239547ae0b13810d57df284a
Parameter Value Uncertainty
Am1 1.0007 0.0017
Am2 0
a/Rs 12.85 0.36
Rp/Rs 0.0708 0.002
ephemeris [JD] 2459670.4233 0.0012
eccentricity 0.12
inclination [degrees] 88.6
omega [degrees] 46.0
orbital period [days] 4.2345026
u0 2.370885329108925
u1 -4.1069182118524115
u2 4.190737365480842
u3 -1.4547044202905028
duration 0.0993 0.003
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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