| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
K2-289 DR2 4325505960880989952 J16263433-1547326 |
||||
| RA | 16:26:34.3299 | DEC | -15:47:32.564 | ||
| Parallax 3.617 mas |
P.M. RA -21.709 mas/y |
P.M. DEC -37.005 mas/y |
|||
| MagV 14.465 |
MagR* 13.551 |
MagI* 12.765 |
MagJ 11.435 |
MagH 10.847 |
MagK 10.641 |
| MagG 13.794 |
MagGBP 14.708 |
MagGRP 12.838 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Not verified 
|
|||||
|---|---|---|---|---|---|
| Livingston et al. 2019 | |||||
| Mid-time 2456897.144 ± 0.001 BJDTDB |
|||||
| Period 13.15697 ± 5e-05 days |
|||||
| Transit Parameters | |||||
| Livingston et al. 2019 | |||||
| Rp/Rs 0.081 ± 0.001 |
a/Rs 22.5 +0.3 -0.3 |
i 88.48 +0.07 -0.07 deg |
|||
| e - |
ω - deg |
||||
| DepthR* 7.89 mmag |
Duration* 4.03 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Livingston et al. 2019 | |||||
| Teff 5529.0 +77.0 -74.0 K |
Log(g) 4.39 +0.02 -0.02 cm/s2 |
Fe/H 0.16 +0.09 -0.07 dex |
|||
| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | ALERT | ||||
| Minimum aperture | 14.8" | ||||
| Total Observations (Recent) | 6 (2) | ||||
| O-C | 44.2 ± 5.29 minutes | ||||
| ExoClock Observations (Recent) | 2 (2) | ||||
| Space Observations (Recent) | 4 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | 0.08525 ± 0.00071 | ||||
| TESS Rp/Rs | - | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| K2-289b (ALERT) 2025-06-04 | Kohji Tsumura Siding Spring Observatory | PlaneWave Delta Rho 350 QHY600 CMOS / rpr / 180.0 | 29.33 ± 8.21 | |
| K2-289b (ALERT) 2025-05-09 | Leopold Gramaize Cerro Tololo Observatory | PlaneWave Delta Rho350 QHY600 CMOS / rpr / 200.0 | 54.73 ± 6.91 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| K2-289b (ALERT) 2014-10-19 | K2 | -1.27 ± 1.87 | ||
| K2-289b (ALERT) 2014-10-06 | K2 | 4.74 ± 3.17 | ||
| K2-289b (ALERT) 2014-09-22 | K2 | -1.79 ± 1.34 | ||
| K2-289b (ALERT) 2014-09-09 | K2 | 10.41 ± 3.02 | ||