exoclock

KELT-7b (LOW)

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. 2022
Mid-time
2459109.138447 ± 5.1e-05 BJDTDB
Period
2.7347656 ± 2e-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 LOW
Minimum aperture 5.0"
Total Observations (Recent) 58 (5)
O-C -1.17 ± 0.78 minutes
ExoClock Observations (Recent) 14 (5)
Space Observations (Recent) 31 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 13 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.08946 ± 7.4e-05

KELT-7b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
KELT-7b (LOW)
2023-12-22
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 30.0
-3.67 ± 1.58
KELT-7b (LOW)
2023-12-03
Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / R / 240.0
5.06 ± 2.02
KELT-7b (LOW)
2023-12-01
Adrian Jones
Private Observatory (I64)
Meade ACF 30cm
QSI 583 / R / 30.0
-1.63 ± 1.3
KELT-7b (LOW)
2023-12-01
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 15.0
-2.19 ± 1.73
KELT-7b (LOW)
2023-09-10
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 30.0
0.21 ± 3.89
KELT-7b (LOW)
2022-02-01
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0
2.42 ± 1.87
KELT-7b (LOW)
2022-01-10
Dominique DANIEL
La Montjoie
Celestron CGX C8 XLT
Camera CMOS ZWO ASI294MC pro (color) / Clear / 60.0
0.59 ± 3.46
KELT-7b (LOW)
2021-11-09
Tõnis Eenmäe
Tartu Observatory
Planewave CDK 12.5
Apogee Alta U42 / B / 20.0
1.9 ± 1.58
KELT-7b (LOW)
2020-12-15
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 4.0
6.18 ± 5.76
KELT-7b (LOW)
2020-11-24
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / R / 30.0
0.45 ± 0.86
KELT-7b (LOW)
2020-11-13
Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)
Officina Stellare RiLa 400
FLI ProLine 16803 / zpr / 30.0
2.27 ± 1.44
KELT-7b (LOW)
2019-12-31
Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / I / 240.0
0.12 ± 1.44
KELT-7b (LOW)
2019-01-15
Giuseppe Conzo
Gruppo Astrofili Palidoro
Skywatcher 80ED
ASI-178MM / Clear / 90.0
4.01 ± 1.3
KELT-7b (LOW)
2017-12-28
MUSCAT Team
Teide Observatory
Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH3 i / ipr / 20.0
-0.34 ± 0.58

Space Observations

Planet
Observation Date
Mission O-C
minutes
KELT-7b (LOW)
2021-11-30
TESS0.23 ± 0.33
KELT-7b (LOW)
2021-11-28
TESS-0.47 ± 0.3
KELT-7b (LOW)
2021-11-25
TESS0.25 ± 0.33
KELT-7b (LOW)
2021-11-22
TESS0.27 ± 0.29
KELT-7b (LOW)
2021-11-17
TESS0.36 ± 0.29
KELT-7b (LOW)
2021-11-14
TESS-0.19 ± 0.29
KELT-7b (LOW)
2021-11-11
TESS-0.07 ± 0.29
KELT-7b (LOW)
2021-11-09
TESS0.2 ± 0.29
KELT-7b (LOW)
2021-10-31
TESS-0.59 ± 0.29
KELT-7b (LOW)
2021-10-29
TESS-0.78 ± 0.35
KELT-7b (LOW)
2021-10-26
TESS-0.11 ± 0.29
KELT-7b (LOW)
2021-10-23
TESS-0.45 ± 0.29
KELT-7b (LOW)
2021-10-20
TESS-0.04 ± 0.27
KELT-7b (LOW)
2021-10-18
TESS0.09 ± 0.29
KELT-7b (LOW)
2021-10-15
TESS-0.09 ± 0.27
KELT-7b (LOW)
2021-10-09
TESS-0.06 ± 0.27
KELT-7b (LOW)
2021-10-07
TESS-0.1 ± 0.3
KELT-7b (LOW)
2021-10-04
TESS0.34 ± 0.29
KELT-7b (LOW)
2021-10-01
TESS0.8 ± 0.3
KELT-7b (LOW)
2021-09-26
TESS0.21 ± 0.29
KELT-7b (LOW)
2021-09-23
TESS0.07 ± 0.29
KELT-7b (LOW)
2021-09-20
TESS0.11 ± 0.29
KELT-7b (LOW)
2021-09-18
TESS-0.37 ± 0.3
KELT-7b (LOW)
2019-12-20
TESS-0.0 ± 0.35
KELT-7b (LOW)
2019-12-18
TESS0.12 ± 0.4
KELT-7b (LOW)
2019-12-15
TESS-0.59 ± 0.32
KELT-7b (LOW)
2019-12-12
TESS-0.2 ± 0.37
KELT-7b (LOW)
2019-12-09
TESS-0.25 ± 0.3
KELT-7b (LOW)
2019-12-07
TESS0.43 ± 0.27
KELT-7b (LOW)
2019-12-04
TESS-0.13 ± 0.3
KELT-7b (LOW)
2019-12-01
TESS0.37 ± 0.32

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2017-10-18 Pluriel et al. 2020 3.25 ± 0.9
2017-01-04 Garhart et al. 2020 0.32 ± 0.27
2016-12-27 Garhart et al. 2020 -0.6 ± 0.23
2014-01-23 Bieryla et al. 2015 2.02 ± 1.44
2013-10-19 Bieryla et al. 2015 1.7 ± 0.78
2013-01-29 Bieryla et al. 2015 2.04 ± 0.98
2013-01-27 Bieryla et al. 2015 1.92 ± 0.98
2012-12-08 Bieryla et al. 2015 -0.19 ± 0.92
2012-11-22 Bieryla et al. 2015 2.82 ± 1.05
2012-11-14 Bieryla et al. 2015 1.03 ± 0.84
2012-11-03 Bieryla et al. 2015 -1.36 ± 0.71
2012-10-23 Bieryla et al. 2015 -1.83 ± 0.52
2012-10-04 Bieryla et al. 2015 -0.46 ± 1.07
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