| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HD 115447 DR2 3607877948613218304 J13172019-1516248 |
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| RA | 13:17:20.1889 | DEC | -15:16:24.934 | ||
| Parallax 6.154 mas |
P.M. RA -60.6 mas/y |
P.M. DEC -26.012 mas/y |
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| MagV 9.11 |
MagR* 8.821 |
MagI* 8.609 |
MagJ 8.246 |
MagH 8.09 |
MagK 8.055 |
| MagG 8.994 |
MagGBP 9.226 |
MagGRP 8.648 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2459000.37557 ± 0.00013 BJDTDB |
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| Period 4.6336102 ± 1.5e-06 days |
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| Transit Parameters | |||||
| Clark et al. 2023 | |||||
| Rp/Rs 0.0825 ± 0.0005 |
a/Rs 7.6 +0.2 -0.2 |
i 84.7 +0.3 -0.4 deg |
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| e 0.21 +0.04 -0.04 |
ω 28.0 +12.0 -10.0 deg |
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| DepthR* 8.04 mmag |
Duration* 3.73 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 | |||||
| Clark et al. 2023 | |||||
| Teff 6643.0 +150.0 -150.0 K |
Log(g) 4.05 +0.17 -0.17 cm/s2 |
Fe/H 0.0 +0.08 -0.08 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | HIGH | ||||
| Minimum aperture | 5.0" | ||||
| Total Observations (Recent) | 9 (1) | ||||
| O-C | 0.38 ± 1.17 minutes | ||||
| ExoClock Observations (Recent) | 2 (1) | ||||
| Space Observations (Recent) | 7 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.08196 ± 0.00021 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| TOI-778b (HIGH) 2025-04-14 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / R / 60.0 | 3.04 ± 1.58 | |
| TOI-778b (HIGH) 2024-03-30 | Francois Regembal HRT Deep Sky Chile | Astrosib RC360 Moravian C3 PRO 61000 / Lum / 60.0 | -2.81 ± 1.73 | |
Space Observations |
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| Planet Observation Date |
Mission | O-C minutes |
||
| TOI-778b (HIGH) 2021-04-24 | TESS | 0.09 ± 0.48 | ||
| TOI-778b (HIGH) 2021-04-20 | TESS | -0.02 ± 0.49 | ||
| TOI-778b (HIGH) 2021-04-10 | TESS | -0.31 ± 0.45 | ||
| TOI-778b (HIGH) 2021-04-06 | TESS | 0.28 ± 0.46 | ||
| TOI-778b (HIGH) 2019-04-19 | TESS | 0.39 ± 0.49 | ||
| TOI-778b (HIGH) 2019-04-14 | TESS | -0.26 ± 0.48 | ||
| TOI-778b (HIGH) 2019-03-31 | TESS | -0.07 ± 0.43 | ||