| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
WASP-23 DR2 5557345496687437696 J06443062-4245425 |
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| RA | 06:44:30.6134 | DEC | -42:45:42.666 | ||
| Parallax 4.791 mas |
P.M. RA -9.014 mas/y |
P.M. DEC -87.771 mas/y |
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| MagV 12.52 |
MagR 12.31 |
MagI* 11.572 |
MagJ 10.96 |
MagH 10.514 |
MagK 10.45 |
| MagG 12.321 |
MagGBP 12.801 |
MagGRP 11.709 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2457943.608808 ± 8.3e-05 BJDTDB |
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| Period 2.94442739 ± 1.4e-07 days |
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| Transit Parameters | |||||
| Triaud et al. 2011 | |||||
| Rp/Rs 0.13 ± 0.0004 |
a/Rs** 10.21 +0.19 -0.19 |
i 88.4 +0.8 -0.5 deg |
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| e - |
ω - deg |
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| DepthR* 22.7 mmag |
Duration* 2.41 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 | |||||
| Triaud et al. 2011 | |||||
| Teff 5150.0 +100.0 -100.0 K |
Log(g) 4.56 +0.09 -0.09 cm/s2 |
Fe/H 0.0 +0.0 -0.0 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | MEDIUM | ||||
| Minimum aperture | 6.29" | ||||
| Total Observations (Recent) | 54 (3) | ||||
| O-C | -0.23 ± 0.19 minutes | ||||
| ExoClock Observations (Recent) | 27 (3) | ||||
| Space Observations (Recent) | 21 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 6 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.13092 ± 0.0004 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| WASP-23b (MEDIUM) 2025-12-02 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / R / 60.0 | -1.02 ± 0.75 | |
| WASP-23b (MEDIUM) 2025-03-15 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 90.0 | 0.85 ± 0.43 | |
| WASP-23b (MEDIUM) 2025-03-15 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | -1.14 ± 0.39 | |
| WASP-23b (MEDIUM) 2025-01-18 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | 1.4 ± 0.36 | |
| WASP-23b (MEDIUM) 2025-01-18 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 90.0 | -1.71 ± 0.53 | |
| WASP-23b (MEDIUM) 2025-01-15 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | -2.71 ± 0.66 | |
| WASP-23b (MEDIUM) 2024-01-16 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | 1.33 ± 0.55 | |
| WASP-23b (MEDIUM) 2024-01-13 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | 0.33 ± 0.52 | |
| WASP-23b (MEDIUM) 2023-11-21 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | 2.66 ± 0.5 | |
| WASP-23b (MEDIUM) 2023-03-07 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 180.0 | 1.5 ± 1.2 | |
| WASP-23b (MEDIUM) 2023-03-07 | Jean-Pascal Vignes Deep Sky Chile | PlaneWave CDK 17" QHYCCD 600 M / Lum / 90.0 | 1.29 ± 0.56 | |
| WASP-23b (MEDIUM) 2023-03-04 | Leon Bewersdorff Planewave CDK24 | Planewave CDK24 QHY600M-Pro / R / 60.0 | -1.15 ± 0.68 | |
| WASP-23b (MEDIUM) 2023-03-04 | Magdalena Szkudlarek Deep Sky Chile - ROTUZ | PlaneWave CDK 20 QHY268M pro / R / 36.0 | -2.26 ± 0.68 | |
| WASP-23b (MEDIUM) 2023-01-04 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 90.0 | -0.03 ± 0.81 | |
| WASP-23b (MEDIUM) 2022-03-01 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.81 ± 0.68 | |
| WASP-23b (MEDIUM) 2022-02-26 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | -0.47 ± 0.43 | |
| WASP-23b (MEDIUM) 2022-02-26 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / Lum / 120.0 | -1.09 ± 1.24 | |
| WASP-23b (MEDIUM) 2022-01-07 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.9 ± 0.59 | |
| WASP-23b (MEDIUM) 2021-02-23 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 2.11 ± 0.86 | |
| WASP-23b (MEDIUM) 2021-02-17 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -1.41 ± 0.58 | |
| WASP-23b (MEDIUM) 2021-01-01 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 0.23 ± 0.86 | |
| WASP-23b (MEDIUM) 2020-12-29 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -0.02 ± 0.72 | |
| WASP-23b (MEDIUM) 2020-12-26 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 0.16 ± 0.86 | |
| WASP-23b (MEDIUM) 2020-12-23 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Clear / 60.0 | -0.52 ± 0.58 | |
| WASP-23b (MEDIUM) 2020-04-14 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / V / 120.0 | -0.0 ± 0.58 | |
| WASP-23b (MEDIUM) 2020-04-11 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / V / 120.0 | 0.32 ± 0.58 | |
| WASP-23b (MEDIUM) 2020-02-06 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / V / 120.0 | -0.68 ± 1.15 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| WASP-23b (MEDIUM) 2023-02-11 | TESS | -0.37 ± 0.62 | ||
| WASP-23b (MEDIUM) 2023-02-08 | TESS | 0.51 ± 0.76 | ||
| WASP-23b (MEDIUM) 2023-02-05 | TESS | -0.87 ± 0.73 | ||
| WASP-23b (MEDIUM) 2023-02-02 | TESS | -0.86 ± 0.68 | ||
| WASP-23b (MEDIUM) 2023-01-27 | TESS | -1.15 ± 0.72 | ||
| WASP-23b (MEDIUM) 2023-01-21 | TESS | 0.4 ± 0.62 | ||
| WASP-23b (MEDIUM) 2021-02-08 | TESS | -0.38 ± 0.63 | ||
| WASP-23b (MEDIUM) 2021-02-05 | TESS | -0.1 ± 0.69 | ||
| WASP-23b (MEDIUM) 2021-02-02 | TESS | -0.19 ± 0.82 | ||
| WASP-23b (MEDIUM) 2021-01-30 | TESS | 1.04 ± 0.68 | ||
| WASP-23b (MEDIUM) 2021-01-24 | TESS | 1.21 ± 0.65 | ||
| WASP-23b (MEDIUM) 2021-01-21 | TESS | 0.56 ± 0.68 | ||
| WASP-23b (MEDIUM) 2021-01-18 | TESS | -0.53 ± 0.73 | ||
| WASP-23b (MEDIUM) 2021-01-15 | TESS | -0.79 ± 0.65 | ||
| WASP-23b (MEDIUM) 2019-01-04 | TESS | -0.99 ± 0.82 | ||
| WASP-23b (MEDIUM) 2019-01-01 | TESS | 0.15 ± 0.69 | ||
| WASP-23b (MEDIUM) 2018-12-29 | TESS | -0.16 ± 0.56 | ||
| WASP-23b (MEDIUM) 2018-12-26 | TESS | -1.37 ± 0.63 | ||
| WASP-23b (MEDIUM) 2018-12-24 | TESS | 0.71 ± 0.68 | ||
| WASP-23b (MEDIUM) 2018-12-21 | TESS | 0.1 ± 0.66 | ||
| WASP-23b (MEDIUM) 2018-12-18 | TESS | -1.08 ± 0.66 | ||
Literature Mid-times |
||||
| Planet Observation Date |
Reference | O-C minutes |
||
| 2012-02-25 | Nikolov et al. 2013 | 0.21 ± 0.14 | ||
| 2010-12-31 | Triaud et al. 2011 | -1.37 ± 0.75 | ||
| 2010-12-22 | Triaud et al. 2011 | -0.82 ± 0.43 | ||
| 2010-02-07 | Triaud et al. 2011 | 0.1 ± 1.14 | ||
| 2009-09-27 | Triaud et al. 2011 | 0.38 ± 0.98 | ||
| 2008-12-13 | Triaud et al. 2011 | -1.24 ± 1.05 | ||