exoclock
exoclock
KELT-7b
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. 2020
Mid-time
2456385.3121 ± 0.0004 BJDTDB
Period
2.7347694 ± 2e-06 days
Transit Parameters
Bieryla et al. 2015
Rp/Rs
0.091 ± 0.0006		 a/Rs
5.49 +0.12 -0.11
 i
83.8 +0.4 -0.4 deg
e
-		 ω
- deg
DepthR*
9.85 mmag		 Duration*
3.52 hours
* calculated from the other parameters, using PyLightcurve
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
Total Observations (Recent)
O-C minutes
Total Literature Mid-times		 LOW
4 (0)
-2.9±0.8
10
KELT-7b


ExoClock Observations
Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2020-12-15 Martin Crow
Burnham Observatory		 Celestron C9.25
SX694 mono / R / 4.0		 -1.2 ± 5.8
2020-11-24 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / R / 30.0		 -4.5 ± 1.3
2020-11-12 Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)		 Officina Stellare RiLa 400
FLI ProLine 16803 / z' / 30.0		 -2.9 ± 1.6
2019-12-31 Claudio Lopresti
Claudio Lopresti		 Mak-Newton
CCD Sbig ST10xme / I / 240.0		 -1.1 ± 1.4 - Data available


Literature Mid-times
Observation
Date		 Mid-time Time format Reference O-C
minutes
2014-01-23 2456680.667558 ± 0.001 BJD_TDB Bieryla et al. 2015 1.2 ± 1.4
2013-10-19 2456584.950978 ± 0.00054 BJD_TDB Bieryla et al. 2015 1.0 ± 0.8
2013-01-29 2456322.413721 ± 0.00068 BJD_TDB Bieryla et al. 2015 1.9 ± 1.0
2013-01-27 2456319.678871 ± 0.00068 BJD_TDB Bieryla et al. 2015 1.8 ± 1.0
2012-12-08 2456270.451621 ± 0.00064 BJD_TDB Bieryla et al. 2015 -0.2 ± 0.9
2012-11-22 2456254.045118 ± 0.00073 BJD_TDB Bieryla et al. 2015 2.8 ± 1.1
2012-11-14 2456245.839584 ± 0.00058 BJD_TDB Bieryla et al. 2015 1.0 ± 0.8
2012-11-03 2456234.898861 ± 0.00049 BJD_TDB Bieryla et al. 2015 -1.3 ± 0.7
2012-10-23 2456223.95947 ± 0.00036 BJD_TDB Bieryla et al. 2015 -1.8 ± 0.5
2012-10-04 2456204.817057 ± 0.00074 BJD_TDB Bieryla et al. 2015 -0.4 ± 1.1
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