| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
L 678-39 DR2 5664814198431308288 J09360161-2139371 |
||||
| RA | 09:36:01.6372 | DEC | -21:39:38.878 | ||
| Parallax 105.883 mas |
P.M. RA 138.694 mas/y |
P.M. DEC -990.311 mas/y |
|||
| MagV 10.906 |
MagR 9.858 |
MagI 8.577 |
MagJ 7.337 |
MagH 6.74 |
MagK 6.475 |
| MagG 9.88 |
MagGBP 11.19 |
MagGRP 8.792 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2459103.65998 ± 0.00086 BJDTDB |
|||||
| Period 3.9306032 ± 5.6e-06 days |
|||||
| Transit Parameters | |||||
| Luque et al. 2019 | |||||
| Rp/Rs 0.0331 ± 0.0009 |
a/Rs** 19.4 +1.4 -1.3 |
i 89.12 +0.37 -0.31 deg |
|||
| e - |
ω - deg |
||||
| DepthR* 1.43 mmag |
Duration* 1.53 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Luque et al. 2019 | |||||
| Teff 3505.0 +51.0 -51.0 K |
Log(g) 4.94 +0.07 -0.07 cm/s2 |
Fe/H -0.12 +0.16 -0.16 dex |
|||
| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | HIGH | ||||
| Minimum aperture | 35.37" | ||||
| Total Observations (Recent) | 16 (0) | ||||
| O-C | 7.95 ± 2.59 minutes | ||||
| ExoClock Observations (Recent) | 1 (0) | ||||
| Space Observations (Recent) | 15 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.0304 ± 0.00065 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| GJ357b (HIGH) 2025-01-20 | Mercedes Correa Teide Observatory | IAC80 Camelot2 / R / 35.0 | 7.95 ± 2.59 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| GJ357b (HIGH) 2023-03-08 | TESS | -0.75 ± 3.6 | ||
| GJ357b (HIGH) 2023-02-28 | TESS | -0.74 ± 4.61 | ||
| GJ357b (HIGH) 2023-02-24 | TESS | -5.49 ± 2.02 | ||
| GJ357b (HIGH) 2023-02-20 | TESS | -3.61 ± 4.18 | ||
| GJ357b (HIGH) 2023-02-16 | TESS | 0.28 ± 2.3 | ||
| GJ357b (HIGH) 2021-03-03 | TESS | 4.58 ± 1.73 | ||
| GJ357b (HIGH) 2021-02-27 | TESS | 7.03 ± 2.02 | ||
| GJ357b (HIGH) 2021-02-19 | TESS | 0.42 ± 4.03 | ||
| GJ357b (HIGH) 2021-02-15 | TESS | 1.72 ± 3.17 | ||
| GJ357b (HIGH) 2021-02-11 | TESS | -2.31 ± 3.6 | ||
| GJ357b (HIGH) 2019-02-27 | TESS | -4.35 ± 8.21 | ||
| GJ357b (HIGH) 2019-02-23 | TESS | -4.06 ± 9.22 | ||
| GJ357b (HIGH) 2019-02-11 | TESS | 3.73 ± 1.58 | ||
| GJ357b (HIGH) 2019-02-07 | TESS | 4.74 ± 2.3 | ||
| GJ357b (HIGH) 2019-02-03 | TESS | -6.34 ± 1.32 | ||