| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
K2-287 DR2 6239702034929248512 J15321784-2221297 |
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| RA | 15:32:17.8467 | DEC | -22:21:29.763 | ||
| Parallax 6.288 mas |
P.M. RA -4.594 mas/y |
P.M. DEC -17.899 mas/y |
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| MagV 11.308 |
MagR 11.04 |
MagI 10.309 |
MagJ 9.677 |
MagH 9.283 |
MagK 9.188 |
| MagG 11.067 |
MagGBP 11.568 |
MagGRP 10.44 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2458061.29462 ± 0.00016 BJDTDB |
|||||
| Period 14.8931869 ± 7.7e-06 days |
|||||
| Transit Parameters | |||||
| Jordán et al. 2019 | |||||
| Rp/Rs 0.0801 ± 0.001 |
a/Rs 23.9 +0.3 -0.3 |
i 88.13 +0.1 -0.08 deg |
|||
| e 0.48 +0.03 -0.03 |
ω 10.1 +4.6 -4.2 deg |
||||
| DepthR* 7.84 mmag |
Duration* 3.58 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Jordán et al. 2019 | |||||
| Teff 5695.0 +58.0 -58.0 K |
Log(g) 4.4 +0.01 -0.01 cm/s2 |
Fe/H 0.2 +0.04 -0.04 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | ALERT | ||||
| Minimum aperture | 6.92" | ||||
| Total Observations (Recent) | 5 (1) | ||||
| O-C | 16.55 ± 6.19 minutes | ||||
| ExoClock Observations (Recent) | 3 (1) | ||||
| Space Observations (Recent) | 2 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | 0.07866 ± 0.00021 | ||||
| TESS Rp/Rs | - | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| K2-287b (ALERT) 2026-04-13 | Hao-Yuan Duan Lulin Observatory, Taiwan | GSO RC12 ASI 294MM Pro / I / 15.0 | 16.55 ± 6.19 | |
| K2-287b (ALERT) 2023-06-06 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 90.0 | 1.4 ± 2.02 | |
| K2-287b (ALERT) 2023-06-06 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / R / 120.0 | -1.33 ± 2.16 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| K2-287b (ALERT) 2017-11-03 | K2 | -0.36 ± 0.49 | ||
| K2-287b (ALERT) 2017-09-05 | K2 | 0.1 ± 0.26 | ||