| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HD 28109 DR2 4668163021600295552 J04205712-6806095 |
||||
| RA | 04:20:57.1321 | DEC | -68:06:09.514 | ||
| Parallax 7.134 mas |
P.M. RA 22.028 mas/y |
P.M. DEC -10.4 mas/y |
|||
| MagV 9.38 |
MagR* 9.104 |
MagI* 8.789 |
MagJ 8.476 |
MagH 8.256 |
MagK 8.175 |
| MagG 9.3 |
MagGBP 9.587 |
MagGRP 8.902 |
|||
| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2459233.261 ± 0.01 BJDTDB |
|||||
| Period 56.00014 ± 0.00083 days |
|||||
| Transit Parameters | |||||
| Dransfield et al. 2022 | |||||
| Rp/Rs 0.02632 ± 0.00027 |
a/Rs 45.8 +1.6 -1.6 |
i 89.543 +0.093 -0.086 deg |
|||
| e - |
ω - deg |
||||
| DepthR* 0.88 mmag |
Duration* 8.96 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Dransfield et al. 2022 | |||||
| Teff 6120.0 +50.0 -50.0 K |
Log(g) 4.13 +0.1 -0.1 cm/s2 |
Fe/H 0.0 +0.1 -0.1 dex |
|||
| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | HIGH | ||||
| Minimum aperture | 36.74" | ||||
| Total Observations (Recent) | 15 (0) | ||||
| O-C | - | ||||
| ExoClock Observations (Recent) | 0 (0) | ||||
| Space Observations (Recent) | 15 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.02665 ± 0.00028 | ||||
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
|---|---|---|---|---|
| HD28109c (HIGH) 2023-08-28 | TESS | -52.82 ± 3.6 | ||
| HD28109c (HIGH) 2023-07-03 | TESS | -28.14 ± 3.74 | ||
| HD28109c (HIGH) 2023-05-08 | TESS | -19.87 ± 5.76 | ||
| HD28109c (HIGH) 2023-03-13 | TESS | -4.55 ± 4.18 | ||
| HD28109c (HIGH) 2021-05-10 | TESS | 94.2 ± 6.19 | ||
| HD28109c (HIGH) 2021-03-15 | TESS | 82.89 ± 7.34 | ||
| HD28109c (HIGH) 2021-01-18 | TESS | 83.95 ± 5.47 | ||
| HD28109c (HIGH) 2020-09-28 | TESS | 72.12 ± 4.03 | ||
| HD28109c (HIGH) 2020-08-03 | TESS | 79.23 ± 4.18 | ||
| HD28109c (HIGH) 2019-07-08 | TESS | 21.6 ± 6.77 | ||
| HD28109c (HIGH) 2019-05-13 | TESS | 3.66 ± 3.89 | ||
| HD28109c (HIGH) 2019-03-18 | TESS | -8.24 ± 6.19 | ||
| HD28109c (HIGH) 2018-11-26 | TESS | -51.47 ± 4.03 | ||
| HD28109c (HIGH) 2018-10-01 | TESS | -63.65 ± 4.9 | ||
| HD28109c (HIGH) 2018-08-06 | TESS | -70.36 ± 4.61 | ||