| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HD 191939 DR2 2248126315275354496 J20080574+6651019 |
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| RA | 20:08:05.7549 | DEC | +66:51:02.075 | ||
| Parallax 18.625 mas |
P.M. RA 150.256 mas/y |
P.M. DEC -63.909 mas/y |
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| MagV 8.97 |
MagR 8.5 |
MagI* 8.171 |
MagJ 7.597 |
MagH 7.215 |
MagK 7.18 |
| MagG 8.775 |
MagGBP 9.173 |
MagGRP 8.248 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2459357.1879 ± 0.0023 BJDTDB |
|||||
| Period 38.35207 ± 0.00017 days |
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| Transit Parameters | |||||
| Badenas-Agusti et al. 2020 | |||||
| Rp/Rs 0.03089 ± 0.0006 |
a/Rs 49.3 +2.5 -2.5 |
i 89.49 +0.12 -0.12 deg |
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| e - |
ω - deg |
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| DepthR* 1.22 mmag |
Duration* 5.54 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 | |||||
| Badenas-Agusti et al. 2020 | |||||
| Teff 5427.0 +50.0 -50.0 K |
Log(g) 4.4 +0.1 -0.1 cm/s2 |
Fe/H -0.16 +0.08 -0.08 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | HIGH - TTVs | ||||
| Minimum aperture | 25.69" | ||||
| Total Observations (Recent) | 10 (0) | ||||
| O-C | - | ||||
| ExoClock Observations (Recent) | 0 (0) | ||||
| Space Observations (Recent) | 10 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.03056 ± 0.00029 | ||||
Space Observations |
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| Planet Observation Date |
Mission | O-C minutes |
||
|---|---|---|---|---|
| HD191939d (HIGH - TTVs) 2022-12-18 | TESS | -9.0 ± 1.58 | ||
| HD191939d (HIGH - TTVs) 2022-08-25 | TESS | -3.95 ± 2.02 | ||
| HD191939d (HIGH - TTVs) 2022-06-10 | TESS | 11.52 ± 2.16 | ||
| HD191939d (HIGH - TTVs) 2022-05-02 | TESS | -4.22 ± 2.45 | ||
| HD191939d (HIGH - TTVs) 2022-03-25 | TESS | 31.88 ± 2.74 | ||
| HD191939d (HIGH - TTVs) 2020-05-04 | TESS | -4.46 ± 1.87 | ||
| HD191939d (HIGH - TTVs) 2020-02-17 | TESS | -2.1 ± 3.46 | ||
| HD191939d (HIGH - TTVs) 2019-12-02 | TESS | 8.76 ± 2.02 | ||
| HD191939d (HIGH - TTVs) 2019-10-25 | TESS | -5.11 ± 1.73 | ||
| HD191939d (HIGH - TTVs) 2019-09-17 | TESS | -3.0 ± 2.59 | ||