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
Minimum aperture
Total Observations (Recent)
O-C
ExoClock Observations (Recent)
Space Observations (Recent)
ETD Observations (Recent)
Literature Mid-times (Recent)
Kepler Rp/Rs
TESS Rp/Rs
LOW
5.0"
52 (22)
0.001 ± 0.061 minutes
8 (3)
31 (19)
0 (0)
13 (0)
-
0.08946 ± 7.4e-05

KELT-7b


ExoClock Observations

Observation
Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
2022-02-01Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0
2.28 ± 1.87
2022-01-10Dominique DANIEL
La Montjoie
Celestron CGX C8 XLT
Camera CMOS ZWO ASI294MC pro (color) / Clear / 60.0
2.03 ± 2.74
2021-11-09Tõnis Eenmäe
Tartu Observatory
Planewave CDK 12.5
Apogee Alta U42 / B / 20.0
1.9 ± 1.58
2020-12-15Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 4.0
6.18 ± 5.76
2020-11-24Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / R / 30.0
0.45 ± 0.86
2020-11-13Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)
Officina Stellare RiLa 400
FLI ProLine 16803 / z' / 30.0
2.27 ± 1.44
2019-12-31Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / I / 240.0
0.12 ± 1.44
2019-01-15Giuseppe Conzo
Gruppo Astrofili Palidoro
Skywatcher 80ED
ASI-178MM / Clear / 90.0
4.01 ± 1.3

Literature Mid-times

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

Space Observations

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