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HAT-P-28 b

View target in exoplanet catalog
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Total Reductions to Date: 10

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.257213038692697 4.7560561410768376e-07
Ephemeris (BJD_TDB) 2459879.980801102 0.00030973831666609183
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 13.0009159 decimal
DEC 34.728402 decimal
Host Star Metallicity 0.12 0.08 Kokori et al. 2022
Host Star log(g) 4.36 0.06 Log10(cgs) Kokori et al. 2022
Host Star Radius [R_Sun] 1.1 0.09 Sol Kokori et al. 2022
Host Star Effective Temperature [K] 5680.0 90.0 K Kokori et al. 2022
a/Rs 8.43 0.57 Buchhave et al. 2011
eccentricity 0.039 0.033 Bonomo et al. 2017
inclination [degrees] 88.0 0.9 deg Bonomo et al. 2017
omega [degrees] 233.0 90.0 deg Buchhave et al. 2011
orbital period [days] 3.2572129 6e-07 day Kokori et al. 2022
Rp 12.35 0.67 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1173 0 ExoFOP-TESS TOI
ephemeris [JD] 2458124.34308 0.00022 BJD-TDB Kokori et al. 2022

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2455417.5987 0.00053 BJD-TDB, BJD-UTC Bonomo et al. 2017, Buchhave et al. 2011
2458124.34308 0.00022 BJD-TDB Kokori et al. 2022
2459853.92256 0.000726 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0000576
Parameter Value Uncertainty
Am1 0.9755 0.0069
Am2 0.023 0.023
a/Rs 8.83 0.94
Rp/Rs 0.108 0.025
ephemeris [JD] 2458469.6085 0.0061
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.0051830604129686
u1 -3.6457002696012113
u2 4.158264017842129
u3 -1.517746746690924
duration 0.128 0.013
Not 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 MWAA (collaborate/publish)
Light curve chart for 0004327
Parameter Value Uncertainty
Am1 0.9655 0.0066
Am2 0.029 0.038
a/Rs 9.63 1.09
Rp/Rs 0.128 0.029
ephemeris [JD] 2460182.8933 0.0054
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 1.7398561166988644
u1 -3.0636334279616286
u2 3.7032982489956723
u3 -1.3795208825494636
duration 0.111 0.0091
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 CCHD (collaborate/publish)
Light curve chart for 1b53d02fc59a872384b4c0ecebad6d2c
Parameter Value Uncertainty
Am1 0.9999 0.0033
Am2 0
a/Rs 8.42 0.19
Rp/Rs 0.1066 0.0024
ephemeris [JD] 2459879.9833 0.0014
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.640814294404832
u1 -4.738846746877328
u2 4.752981665482114
u3 -1.6549491421846723
duration 0.1356 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 f0a014ae22cf14b02814060bc5a0da61
Parameter Value Uncertainty
Am1 1.0001 0.0038
Am2 0
a/Rs 8.34 0.24
Rp/Rs 0.1104 0.0026
ephemeris [JD] 2459873.4648 0.0017
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.640901241468231
u1 -4.739258366668273
u2 4.753601116727035
u3 -1.6552439206928171
duration 0.1376 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 e55e854eef339f1d76d21186e5deee8a
Parameter Value Uncertainty
Am1 0.9993 0.004
Am2 0
a/Rs 8.75 0.21
Rp/Rs 0.1063 0.0029
ephemeris [JD] 2459860.4368 0.0015
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.639994042162887
u1 -4.7366190538704585
u2 4.750583740433608
u3 -1.6539586579368235
duration 0.1302 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 2f5cea3816b4b4d84a4d75651036a22e
Parameter Value Uncertainty
Am1 0.9998 0.0033
Am2 0
a/Rs 8.65 0.15
Rp/Rs 0.1129 0.0023
ephemeris [JD] 2459870.2106 0.0011
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.640652069483216
u1 -4.738714511016066
u2 4.753106905951661
u3 -1.6550443935919992
duration 0.1322 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 20dd3d31cf053cf2dff9e74923df89a5
Parameter Value Uncertainty
Am1 1.003 0.004
Am2 0
a/Rs 8.37 0.19
Rp/Rs 0.1148 0.0027
ephemeris [JD] 2459866.9496 0.0014
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.64089311946505
u1 -4.739055563817987
u2 4.7531921506067665
u3 -1.655029635425746
duration 0.1375 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 f32400d162bb9263f3b67b879bbab060
Parameter Value Uncertainty
Am1 0.9991 0.0034
Am2 0
a/Rs 8.55 0.18
Rp/Rs 0.1093 0.0025
ephemeris [JD] 2459853.9217 0.0012
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.6404715162541663
u1 -4.737385157516369
u2 4.75108056256858
u3 -1.6541668505097604
duration 0.1337 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)
Light curve chart for 363f4c1fcd4825857df34f831f4d9b18
Parameter Value Uncertainty
Am1 1.0005 0.0034
Am2 0
a/Rs 8.7 0.22
Rp/Rs 0.1117 0.0026
ephemeris [JD] 2459857.1788 0.0015
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.639946285997345
u1 -4.736066522520362
u2 4.749789202704003
u3 -1.6536688954036105
duration 0.1313 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 03a60df559f5cb8c3826c576a41d9927
Parameter Value Uncertainty
Am1 0.9998 0.0035
Am2 0
a/Rs 8.73 0.17
Rp/Rs 0.1105 0.0025
ephemeris [JD] 2459876.7247 0.0011
eccentricity 0.039
inclination [degrees] 88.0
omega [degrees] 233.0
orbital period [days] 3.2572129
u0 2.639986045307164
u1 -4.736517556112868
u2 4.750578275522038
u3 -1.6540466939272016
duration 0.1309 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)

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