| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
WASP-91 DR2 6386751579018596864 J23512286-7009103 |
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| RA | 23:51:22.8514 | DEC | -70:09:10.276 | ||
| Parallax 6.64 mas |
P.M. RA 96.184 mas/y |
P.M. DEC -1.746 mas/y |
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| MagV 11.98 |
MagR* 11.366 |
MagI* 10.995 |
MagJ 10.275 |
MagH 9.838 |
MagK 9.712 |
| MagG 11.624 |
MagGBP 12.128 |
MagGRP 10.996 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2459104.694327 ± 7.5e-05 BJDTDB |
|||||
| Period 2.79857888 ± 2e-07 days |
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| Transit Parameters | |||||
| Anderson et al. 2017 | |||||
| Rp/Rs 0.1225 ± 0.0012 |
a/Rs 9.1 +0.3 -0.3 |
i 86.8 +0.4 -0.4 deg |
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| e - |
ω - deg |
||||
| DepthR* 19.09 mmag |
Duration* 2.36 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 | |||||
| Anderson et al. 2017 | |||||
| Teff 4920.0 +80.0 -80.0 K |
Log(g) 4.3 +0.2 -0.2 cm/s2 |
Fe/H 0.19 +0.13 -0.13 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 5.0" | ||||
| Total Observations (Recent) | 53 (3) | ||||
| O-C | 1.15 ± 0.27 minutes | ||||
| ExoClock Observations (Recent) | 14 (3) | ||||
| Space Observations (Recent) | 38 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 1 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.12149 ± 0.00022 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| WASP-91b (LOW) 2025-10-31 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / R / 60.0 | -1.2 ± 0.53 | |
| WASP-91b (LOW) 2025-10-03 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / R / 55.0 | 4.28 ± 0.65 | |
| WASP-91b (LOW) 2025-05-30 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / V / 60.0 | 2.57 ± 0.63 | |
| WASP-91b (LOW) 2024-12-16 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 60.0 | -0.27 ± 0.76 | |
| WASP-91b (LOW) 2024-11-04 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.52 ± 1.21 | |
| WASP-91b (LOW) 2024-07-29 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / Lum / 45.0 | 1.25 ± 0.62 | |
| WASP-91b (LOW) 2023-08-03 | Marcelo Emilio Pico dos Dias | Boller & Chivens Ikon 14912 / R / 40.0 | 0.71 ± 0.73 | |
| WASP-91b (LOW) 2023-07-06 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.21 ± 1.24 | |
| WASP-91b (LOW) 2023-07-06 | Raylan Ari Prestes Martins Observatório Pico dos Dias | B&C Ikon 14912 / R / 40.0 | -3.82 ± 0.73 | |
| WASP-91b (LOW) 2023-06-08 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.58 ± 0.78 | |
| WASP-91b (LOW) 2023-05-25 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 0.92 ± 0.78 | |
| WASP-91b (LOW) 2022-07-04 | David Patterson Numurkah Observatory | Sky Watcher Esprit 120ED APO ZWOASI294MM Pro / Lum / 60.0 | -3.37 ± 2.74 | |
| WASP-91b (LOW) 2021-12-29 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 2.22 ± 1.15 | |
| WASP-91b (LOW) 2021-12-01 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 1.63 ± 0.86 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| WASP-91b (LOW) 2023-08-20 | TESS | -0.24 ± 0.55 | ||
| WASP-91b (LOW) 2023-08-17 | TESS | 0.68 ± 0.66 | ||
| WASP-91b (LOW) 2023-08-14 | TESS | 0.14 ± 0.45 | ||
| WASP-91b (LOW) 2023-08-08 | TESS | 0.75 ± 0.69 | ||
| WASP-91b (LOW) 2023-08-06 | TESS | -0.45 ± 0.56 | ||
| WASP-91b (LOW) 2023-08-03 | TESS | -0.05 ± 0.53 | ||
| WASP-91b (LOW) 2023-07-31 | TESS | 0.47 ± 0.56 | ||
| WASP-91b (LOW) 2023-07-23 | TESS | -0.01 ± 0.49 | ||
| WASP-91b (LOW) 2023-07-20 | TESS | -0.35 ± 0.55 | ||
| WASP-91b (LOW) 2023-07-17 | TESS | -0.2 ± 0.55 | ||
| WASP-91b (LOW) 2023-07-09 | TESS | -0.47 ± 0.55 | ||
| WASP-91b (LOW) 2023-07-06 | TESS | 0.42 ± 0.55 | ||
| WASP-91b (LOW) 2023-07-03 | TESS | 0.52 ± 0.49 | ||
| WASP-91b (LOW) 2020-08-23 | TESS | 0.84 ± 0.65 | ||
| WASP-91b (LOW) 2020-08-20 | TESS | -0.45 ± 0.58 | ||
| WASP-91b (LOW) 2020-08-18 | TESS | 0.22 ± 0.59 | ||
| WASP-91b (LOW) 2020-08-15 | TESS | 0.74 ± 0.53 | ||
| WASP-91b (LOW) 2020-08-09 | TESS | -0.56 ± 0.55 | ||
| WASP-91b (LOW) 2020-08-06 | TESS | -0.02 ± 0.56 | ||
| WASP-91b (LOW) 2020-08-04 | TESS | -0.49 ± 0.55 | ||
| WASP-91b (LOW) 2020-08-01 | TESS | -1.07 ± 0.56 | ||
| WASP-91b (LOW) 2020-07-29 | TESS | 0.66 ± 0.56 | ||
| WASP-91b (LOW) 2020-07-26 | TESS | 0.06 ± 0.52 | ||
| WASP-91b (LOW) 2020-07-23 | TESS | -0.07 ± 0.48 | ||
| WASP-91b (LOW) 2020-07-21 | TESS | 0.05 ± 0.6 | ||
| WASP-91b (LOW) 2020-07-15 | TESS | 0.81 ± 0.55 | ||
| WASP-91b (LOW) 2020-07-12 | TESS | -0.58 ± 0.52 | ||
| WASP-91b (LOW) 2020-07-09 | TESS | -0.16 ± 0.59 | ||
| WASP-91b (LOW) 2020-07-07 | TESS | 0.41 ± 0.55 | ||
| WASP-91b (LOW) 2018-08-21 | TESS | -0.79 ± 0.63 | ||
| WASP-91b (LOW) 2018-08-15 | TESS | -0.17 ± 0.55 | ||
| WASP-91b (LOW) 2018-08-12 | TESS | 0.73 ± 0.68 | ||
| WASP-91b (LOW) 2018-08-10 | TESS | -0.1 ± 0.6 | ||
| WASP-91b (LOW) 2018-08-07 | TESS | 1.18 ± 0.73 | ||
| WASP-91b (LOW) 2018-08-04 | TESS | -0.83 ± 0.55 | ||
| WASP-91b (LOW) 2018-08-01 | TESS | 0.22 ± 0.59 | ||
| WASP-91b (LOW) 2018-07-29 | TESS | -1.29 ± 0.53 | ||
| WASP-91b (LOW) 2018-07-27 | TESS | 0.36 ± 0.62 | ||
Literature Mid-times |
||||
| Planet Observation Date |
Reference | O-C minutes |
||
| 2013-01-05 | Anderson et al. 2017 | 0.13 ± 0.29 | ||