| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
TYC 7099-846-1 DR2 5580554052549277056 J06385630-3638462 |
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| RA | 06:38:56.3074 | DEC | -36:38:46.144 | ||
| Parallax 2.895 mas |
P.M. RA -3.872 mas/y |
P.M. DEC 4.927 mas/y |
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| MagV 10.51 |
MagR* 10.203 |
MagI* 9.913 |
MagJ 9.519 |
MagH 9.327 |
MagK 9.243 |
| MagG 10.401 |
MagGBP 10.685 |
MagGRP 9.993 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2459265.34839 ± 0.00034 BJDTDB |
|||||
| Period 5.003707 ± 1.5e-05 days |
|||||
| Transit Parameters | |||||
| Rodriguez et al. 2021 | |||||
| Rp/Rs 0.08738 ± 0.00091 |
a/Rs 6.82 +0.22 -0.24 |
i 82.54 +0.42 -0.59 deg |
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| e 0.05 +0.054 -0.035 |
ω 159.0 +86.0 -99.0 deg |
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| DepthR* 7.38 mmag |
Duration* 3.64 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 | |||||
| Rodriguez et al. 2021 | |||||
| Teff 6460.0 +130.0 -150.0 K |
Log(g) 3.99 +0.03 -0.04 cm/s2 |
Fe/H 0.072 +0.085 -0.076 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | ALERT | ||||
| Minimum aperture | 6.03" | ||||
| Total Observations (Recent) | 14 (3) | ||||
| O-C | 30.74 ± 1.62 minutes | ||||
| ExoClock Observations (Recent) | 5 (3) | ||||
| Space Observations (Recent) | 9 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.08695 ± 0.00043 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| TOI-640b (ALERT) 2025-12-12 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 60.0 | 26.86 ± 3.02 | |
| TOI-640b (ALERT) 2025-12-02 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 60.0 | 33.22 ± 2.16 | |
| TOI-640b (ALERT) 2025-11-27 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 60.0 | 28.91 ± 4.18 | |
| TOI-640b (ALERT) 2022-02-25 | Jean-Pascal Vignes Deep Sky Chile | Planewave CDK400 QHYCCD 600M / R / 60.0 | -3.32 ± 2.02 | |
| TOI-640b (ALERT) 2022-02-05 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 80.0 | 2.48 ± 1.73 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| TOI-640b (ALERT) 2021-02-04 | TESS | -1.29 ± 1.28 | ||
| TOI-640b (ALERT) 2021-01-30 | TESS | 1.77 ± 1.28 | ||
| TOI-640b (ALERT) 2021-01-25 | TESS | 1.79 ± 1.44 | ||
| TOI-640b (ALERT) 2021-01-20 | TESS | 0.48 ± 1.21 | ||
| TOI-640b (ALERT) 2021-01-15 | TESS | -1.83 ± 1.12 | ||
| TOI-640b (ALERT) 2021-01-10 | TESS | -0.81 ± 1.11 | ||
| TOI-640b (ALERT) 2021-01-05 | TESS | 1.99 ± 1.17 | ||
| TOI-640b (ALERT) 2020-12-26 | TESS | -0.55 ± 1.25 | ||
| TOI-640b (ALERT) 2020-12-21 | TESS | -0.7 ± 1.3 | ||