exoclock

KELT-7b (MEDIUM)

Discovered by: Bieryla et al. 2015

The Star
Simbad
GAIA
2MASS		 HD 33643
DR2 181908842994567936
J05131092+3319054
RA 05:13:10.9287 DEC +33:19:05.403
Parallax
7.288 mas		 P.M. RA
10.622 mas/y		 P.M. DEC
-49.779 mas/y
MagV
8.54		 MagR*
8.279		 MagI
8.129		 MagJ
7.739		 MagH
7.58		 MagK
7.543
MagG
8.452		 MagGBP
8.688		 MagGRP
8.113
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459489.270919 ± 4.1e-05 BJDTDB
Period
2.73476573 ± 1.4e-07 days
Transit Parameters
Bieryla et al. 2015
Rp/Rs
0.091 ± 0.0006		 a/Rs**
5.53 +0.04 -0.04
 i
83.8 +0.4 -0.4 deg
e
-		 ω
- deg
DepthR*
9.83 mmag		 Duration*
3.49 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Bieryla et al. 2015
Teff
6789.0 +50.0 -49.0 K
 Log(g)
4.15 +0.02 -0.02 cm/s2
 Fe/H
0.14 +0.07 -0.08 dex
ExoClock Status
Observing Priority MEDIUM
Minimum aperture 5.0"
Total Observations (Recent) 92 (1)
O-C -1.62 ± 0.99 minutes
ExoClock Observations (Recent) 25 (1)
Space Observations (Recent) 54 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 13 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.089364 ± 5.6e-05

KELT-7b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
KELT-7b (MEDIUM)
2026-01-18		Lee YuHsien
KMSH Observatory		C14HD
QSI-660 / R / 4.0		2.95 ± 6.62
KELT-7b (MEDIUM)
2025-02-05		Charles Miller
Miller Observatory		Meade 12" LX850
QHY268M / R / 20.0		-4.03 ± 2.02
KELT-7b (MEDIUM)
2024-12-28		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Player One Astronomy Poseidon-M Pro (IMX571) / rpr / 20.0		-1.01 ± 1.18
KELT-7b (MEDIUM)
2024-12-20		Lee YuHsien
KMSH Observatory		C14HD
QSI-660 / R / 4.0		-0.12 ± 5.47
KELT-7b (MEDIUM)
2023-12-22		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 30.0		-3.8 ± 1.58
KELT-7b (MEDIUM)
2023-12-03		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / R / 240.0		4.92 ± 2.02
KELT-7b (MEDIUM)
2023-12-01		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 30.0		-1.76 ± 1.3
KELT-7b (MEDIUM)
2023-12-01		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 15.0		-2.33 ± 1.73
KELT-7b (MEDIUM)
2023-10-18		Charles Miller
Miller Observatory		Meade 12" LX850
QHY268M / R / 15.0		4.8 ± 2.3
KELT-7b (MEDIUM)
2023-09-10		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 30.0		0.08 ± 3.89
KELT-7b (MEDIUM)
2022-02-01		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		2.34 ± 1.87
KELT-7b (MEDIUM)
2022-01-10		Dominique DANIEL
La Montjoie		Celestron CGX C8 XLT
Camera CMOS ZWO ASI294MC pro (color) / Clear / 60.0		0.5 ± 3.46
KELT-7b (MEDIUM)
2021-11-09		Tõnis Eenmäe
Tartu Observatory		Planewave CDK 12.5
Apogee Alta U42 / B / 20.0		1.82 ± 1.58
KELT-7b (MEDIUM)
2020-12-15		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 4.0		6.12 ± 5.76
KELT-7b (MEDIUM)
2020-11-24		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / R / 30.0		0.39 ± 0.86
KELT-7b (MEDIUM)
2020-11-13		Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)		Officina Stellare RiLa 400
FLI ProLine 16803 / zpr / 30.0		2.21 ± 1.44
KELT-7b (MEDIUM)
2019-12-31		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / I / 240.0		0.09 ± 1.44
KELT-7b (MEDIUM)
2019-01-15		Giuseppe Conzo
Gruppo Astrofili Palidoro		Skywatcher 80ED
ASI-178MM / Clear / 90.0		4.0 ± 1.3
KELT-7b (MEDIUM)
2017-12-28		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH4 z / zpr / 15.0		-0.23 ± 0.62
KELT-7b (MEDIUM)
2017-12-28		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH3 i / ipr / 20.0		-0.32 ± 0.58
KELT-7b (MEDIUM)
2017-12-28		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH1 g / gpr / 5.0		-0.98 ± 0.63
KELT-7b (MEDIUM)
2017-12-28		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B - CH2 r / rpr / 10.0		-1.73 ± 0.6
KELT-7b (MEDIUM)
2017-12-17		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH1 g / gpr / 5.0		4.35 ± 0.78
KELT-7b (MEDIUM)
2017-12-17		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B - CH2 r / rpr / 10.0		1.22 ± 0.84
KELT-7b (MEDIUM)
2017-12-17		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH4 z / zpr / 15.0		0.72 ± 0.66

Space Observations
Planet
Observation Date		 Mission O-C
minutes
KELT-7b (MEDIUM)
2024-01-02		TESS-0.02 ± 0.32
KELT-7b (MEDIUM)
2023-12-31		TESS0.67 ± 0.26
KELT-7b (MEDIUM)
2023-12-28		TESS0.28 ± 0.29
KELT-7b (MEDIUM)
2023-12-20		TESS0.14 ± 0.33
KELT-7b (MEDIUM)
2023-12-17		TESS0.02 ± 0.27
KELT-7b (MEDIUM)
2023-12-14		TESS-0.26 ± 0.29
KELT-7b (MEDIUM)
2023-12-12		TESS0.08 ± 0.32
KELT-7b (MEDIUM)
2023-11-09		TESS-0.43 ± 0.29
KELT-7b (MEDIUM)
2023-11-06		TESS-0.11 ± 0.29
KELT-7b (MEDIUM)
2023-11-03		TESS0.52 ± 0.3
KELT-7b (MEDIUM)
2023-11-01		TESS-0.06 ± 0.3
KELT-7b (MEDIUM)
2023-10-26		TESS0.22 ± 0.27
KELT-7b (MEDIUM)
2023-10-23		TESS-0.18 ± 0.27
KELT-7b (MEDIUM)
2023-10-21		TESS0.22 ± 0.29
KELT-7b (MEDIUM)
2023-10-18		TESS0.05 ± 0.3
KELT-7b (MEDIUM)
2022-12-21		TESS0.46 ± 0.26
KELT-7b (MEDIUM)
2022-12-16		TESS-0.16 ± 0.3
KELT-7b (MEDIUM)
2022-12-13		TESS-0.18 ± 0.29
KELT-7b (MEDIUM)
2022-12-07		TESS-0.35 ± 0.3
KELT-7b (MEDIUM)
2022-12-05		TESS0.22 ± 0.29
KELT-7b (MEDIUM)
2022-12-02		TESS-0.29 ± 0.29
KELT-7b (MEDIUM)
2022-11-29		TESS0.21 ± 0.29
KELT-7b (MEDIUM)
2021-11-30		TESS0.14 ± 0.33
KELT-7b (MEDIUM)
2021-11-28		TESS-0.52 ± 0.3
KELT-7b (MEDIUM)
2021-11-25		TESS0.17 ± 0.35
KELT-7b (MEDIUM)
2021-11-22		TESS0.18 ± 0.27
KELT-7b (MEDIUM)
2021-11-17		TESS0.32 ± 0.27
KELT-7b (MEDIUM)
2021-11-14		TESS-0.26 ± 0.29
KELT-7b (MEDIUM)
2021-11-11		TESS-0.14 ± 0.29
KELT-7b (MEDIUM)
2021-11-09		TESS0.15 ± 0.29
KELT-7b (MEDIUM)
2021-10-31		TESS-0.67 ± 0.29
KELT-7b (MEDIUM)
2021-10-29		TESS-0.83 ± 0.36
KELT-7b (MEDIUM)
2021-10-26		TESS-0.19 ± 0.27
KELT-7b (MEDIUM)
2021-10-23		TESS-0.32 ± 0.29
KELT-7b (MEDIUM)
2021-10-20		TESS-0.11 ± 0.27
KELT-7b (MEDIUM)
2021-10-18		TESS0.15 ± 0.29
KELT-7b (MEDIUM)
2021-10-15		TESS-0.18 ± 0.27
KELT-7b (MEDIUM)
2021-10-09		TESS-0.12 ± 0.27
KELT-7b (MEDIUM)
2021-10-07		TESS-0.19 ± 0.3
KELT-7b (MEDIUM)
2021-10-04		TESS0.28 ± 0.29
KELT-7b (MEDIUM)
2021-10-01		TESS0.71 ± 0.3
KELT-7b (MEDIUM)
2021-09-26		TESS0.12 ± 0.3
KELT-7b (MEDIUM)
2021-09-23		TESS0.04 ± 0.3
KELT-7b (MEDIUM)
2021-09-20		TESS0.03 ± 0.29
KELT-7b (MEDIUM)
2021-09-18		TESS-0.45 ± 0.29
KELT-7b (MEDIUM)
2019-12-20		TESS-0.02 ± 0.33
KELT-7b (MEDIUM)
2019-12-18		TESS0.07 ± 0.4
KELT-7b (MEDIUM)
2019-12-15		TESS-0.37 ± 0.33
KELT-7b (MEDIUM)
2019-12-12		TESS-0.21 ± 0.37
KELT-7b (MEDIUM)
2019-12-09		TESS-0.29 ± 0.3
KELT-7b (MEDIUM)
2019-12-07		TESS0.36 ± 0.26
KELT-7b (MEDIUM)
2019-12-04		TESS0.07 ± 0.3
KELT-7b (MEDIUM)
2019-12-01		TESS0.37 ± 0.32
KELT-7b (MEDIUM)
2019-11-29		TESS-1.54 ± 0.46

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2017-10-18 Pluriel et al. 2020 3.28 ± 0.9
2017-01-04 Garhart et al. 2020 0.36 ± 0.27
2016-12-27 Garhart et al. 2020 -0.55 ± 0.23
2014-01-23 Bieryla et al. 2015 2.14 ± 1.44
2013-10-19 Bieryla et al. 2015 1.82 ± 0.78
2013-01-29 Bieryla et al. 2015 2.18 ± 0.98
2013-01-27 Bieryla et al. 2015 2.06 ± 0.98
2012-12-08 Bieryla et al. 2015 -0.05 ± 0.92
2012-11-22 Bieryla et al. 2015 2.97 ± 1.05
2012-11-14 Bieryla et al. 2015 1.18 ± 0.84
2012-11-03 Bieryla et al. 2015 -1.21 ± 0.71
2012-10-23 Bieryla et al. 2015 -1.68 ± 0.52
2012-10-04 Bieryla et al. 2015 -0.31 ± 1.07
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