| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
K2-237 DR2 6032746832450438400 J16550453-2842380 |
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| 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 |
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| 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 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2457979.18304 ± 0.00011 BJDTDB |
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| Period 2.18053404 ± 3.5e-07 days |
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| 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 |
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| e - |
ω - deg |
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| DepthR* 17.03 mmag |
Duration* 3.06 hours |
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|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
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| 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 |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | MEDIUM | ||||
| Minimum aperture | 5.0" | ||||
| Total Observations (Recent) | 48 (2) | ||||
| O-C | 1.91 ± 0.37 minutes | ||||
| ExoClock Observations (Recent) | 17 (2) | ||||
| Space Observations (Recent) | 30 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 1 (0) | ||||
| Kepler Rp/Rs | 0.12245 ± 0.00018 | ||||
| TESS Rp/Rs | 0.12311 ± 0.0008 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| K2-237b (MEDIUM) 2025-05-29 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / V / 60.0 | 4.42 ± 0.52 | |
| K2-237b (MEDIUM) 2025-04-24 | Darryl Madison Ajijic Observatory | Celestron CPC 800 Edge HD ZWO2400MC / Clear / 90.0 | 0.69 ± 2.02 | |
| K2-237b (MEDIUM) 2024-09-03 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.37 ± 0.82 | |
| K2-237b (MEDIUM) 2024-05-30 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -1.16 ± 0.98 | |
| K2-237b (MEDIUM) 2024-05-17 | Aziz Ettahar Kaeouach Atlas Sky Observatory | Planewaves CDK 500 Zwo asi 6200 / R / 120.0 | -1.07 ± 1.07 | |
| K2-237b (MEDIUM) 2024-05-17 | Adam Popowicz Otivar dome2 | Newton 12" ASA ASI ZWO 1600MM / R / 65.0 | -5.0 ± 2.74 | |
| K2-237b (MEDIUM) 2023-06-14 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 90.0 | 0.23 ± 0.78 | |
| K2-237b (MEDIUM) 2023-06-14 | Francois Regembal HRT Deep Sky Chile | Astrosib RC360 Moravian C3 PRO 61000 / Lum / 120.0 | -1.26 ± 1.34 | |
| K2-237b (MEDIUM) 2023-03-12 | Magdalena Szkudlarek Deep Sky Chile - ROTUZ | PlaneWave CDK 20 QHY268M pro / R / 24.0 | -1.57 ± 0.73 | |
| K2-237b (MEDIUM) 2021-08-07 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 3.97 ± 0.86 | |
| K2-237b (MEDIUM) 2021-05-05 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 1.61 ± 1.01 | |
| K2-237b (MEDIUM) 2021-05-05 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / Lum / 120.0 | 1.61 ± 0.86 | |
| K2-237b (MEDIUM) 2021-04-22 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / Lum / 120.0 | 2.63 ± 2.16 | |
| K2-237b (MEDIUM) 2021-03-29 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 0.14 ± 1.01 | |
| K2-237b (MEDIUM) 2020-07-17 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -0.75 ± 1.01 | |
| K2-237b (MEDIUM) 2020-05-19 | Phil Evans El Sauce | Planewave CDK14 SBIG STT 1603-3 / R / 60.0 | -0.43 ± 0.72 | |
| K2-237b (MEDIUM) 2020-05-06 | Phil Evans El Sauce | Planewave CDK14 SBIG STT 1603-3 / R / 120.0 | -1.0 ± 1.15 | |
Space Observations |
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| Planet Observation Date |
Mission | O-C minutes |
||
| K2-237b (MEDIUM) 2021-06-22 | TESS | -3.5 ± 2.74 | ||
| K2-237b (MEDIUM) 2021-06-20 | TESS | -3.31 ± 1.87 | ||
| K2-237b (MEDIUM) 2021-06-17 | TESS | -2.1 ± 1.58 | ||
| K2-237b (MEDIUM) 2021-06-15 | TESS | 2.41 ± 4.32 | ||
| K2-237b (MEDIUM) 2021-06-13 | TESS | -1.86 ± 1.73 | ||
| K2-237b (MEDIUM) 2021-06-11 | TESS | -2.97 ± 1.58 | ||
| K2-237b (MEDIUM) 2021-06-09 | TESS | -3.2 ± 1.73 | ||
| K2-237b (MEDIUM) 2021-06-07 | TESS | 1.31 ± 1.44 | ||
| K2-237b (MEDIUM) 2021-06-04 | TESS | -2.82 ± 1.44 | ||
| K2-237b (MEDIUM) 2021-05-31 | TESS | 2.32 ± 1.73 | ||
| K2-237b (MEDIUM) 2021-05-29 | TESS | -0.51 ± 1.58 | ||
| K2-237b (MEDIUM) 2019-06-16 | TESS | -0.28 ± 1.31 | ||
| K2-237b (MEDIUM) 2019-06-14 | TESS | 5.49 ± 1.87 | ||
| K2-237b (MEDIUM) 2019-06-11 | TESS | -3.39 ± 1.58 | ||
| K2-237b (MEDIUM) 2019-06-03 | TESS | 0.26 ± 1.73 | ||
| K2-237b (MEDIUM) 2019-06-01 | TESS | -2.28 ± 1.58 | ||
| K2-237b (MEDIUM) 2019-05-29 | TESS | 0.93 ± 1.58 | ||
| K2-237b (MEDIUM) 2019-05-27 | TESS | 1.13 ± 1.73 | ||
| K2-237b (MEDIUM) 2019-05-25 | TESS | -3.29 ± 2.74 | ||
| K2-237b (MEDIUM) 2016-12-01 | K2 | 1.57 ± 1.18 | ||
| K2-237b (MEDIUM) 2016-11-11 | K2 | -0.33 ± 0.24 | ||
| K2-237b (MEDIUM) 2016-11-07 | K2 | 0.79 ± 0.32 | ||
| K2-237b (MEDIUM) 2016-11-05 | K2 | -0.49 ± 0.45 | ||
| K2-237b (MEDIUM) 2016-11-03 | K2 | 0.04 ± 0.2 | ||
| K2-237b (MEDIUM) 2016-10-27 | K2 | -0.08 ± 0.4 | ||
| K2-237b (MEDIUM) 2016-10-23 | K2 | 0.31 ± 0.35 | ||
| K2-237b (MEDIUM) 2016-10-16 | K2 | 0.75 ± 0.45 | ||
| K2-237b (MEDIUM) 2016-10-01 | K2 | -0.54 ± 0.26 | ||
| K2-237b (MEDIUM) 2016-09-29 | K2 | -2.52 ± 0.94 | ||
| K2-237b (MEDIUM) 2016-09-24 | K2 | 8.78 ± 3.17 | ||
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2019-04-16 | Edwards et al. 2021 | 1.77 ± 0.88 | ||