exoclock

K2-237b

Discovered by: Soto et al. 2018

The Star
Simbad
GAIA
2MASS		 K2-237
DR2 6032746832450438400
J16550453-2842380
RA 16:55:04.5335 DEC -28:42:38.014
Parallax
3.149 mas		 P.M. RA
-8.568 mas/y		 P.M. DEC
-5.562 mas/y
MagV
11.6		 MagR
11.53		 MagI*
10.941		 MagJ
10.508		 MagH
10.268		 MagK
10.217
MagG
11.467		 MagGBP
11.776		 MagGRP
11.012
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2021
Mid-time
2457861.4341 ± 0.00013 BJDTDB
Period
2.180533 ± 7e-07 days
Transit Parameters
Soto et al. 2018
Rp/Rs
0.118 ± 0.002		 a/Rs**
5.4 +0.04 -0.05
 i
84.3 +0.7 -0.4 deg
e
-		 ω
- deg
DepthR*
17.03 mmag		 Duration*
3.06 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted to produce a duration that matches the observations.

Limb Darkening Parameters
Soto et al. 2018
Teff
6257.0 +100.0 -100.0 K
 Log(g)
4.24 +0.1 -0.1 cm/s2
 Fe/H
0.14 +0.05 -0.05 dex
ExoClock Status
Observing Priority
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		MEDIUM
8 (1)

1

1.9±0.3

K2-237b


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2021-08-07 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / R / 120.0		 5.2 ± 0.9
2021-05-05 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / R / 120.0		 2.8 ± 1.0
2021-05-05 Anaël Wünsche
El Sauce Observatory		 CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		 2.8 ± 0.9
2021-04-22 Anaël Wünsche
El Sauce Observatory		 CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		 3.8 ± 2.2
2021-03-29 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / R / 120.0		 1.3 ± 1.0
2020-07-17 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / R / 120.0		 0.2 ± 1.0 - Data available
2020-05-19 Phil Evans
El Sauce		 Planewave CDK14
SBIG STT 1603-3 / R / 60.0		 0.5 ± 0.7 - Data available
2020-05-06 Phil Evans
El Sauce		 Planewave CDK14
SBIG STT 1603-3 / R / 120.0		 -0.1 ± 1.2 - Data available


Literature Mid-times

Observation
Date		 Mid-time Time format Reference O-C
minutes
2019-04-16 2458589.7338 ± 0.00061 BJD_TDB Edwards et al. 2021 2.4 ± 0.9
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