| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
K2-87 DR2 47908509057301120 J04245669+1849387 |
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| RA | 04:24:56.6990 | DEC | +18:49:38.714 | ||
| Parallax 2.007 mas |
P.M. RA 25.965 mas/y |
P.M. DEC -13.642 mas/y |
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| MagV 14.13 |
MagR 13.96 |
MagI* 12.786 |
MagJ 11.811 |
MagH 11.359 |
MagK 11.197 |
| MagG 13.708 |
MagGBP 14.411 |
MagGRP 12.896 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2457334.9216 ± 0.0011 BJDTDB |
|||||
| Period 9.726617 ± 3.1e-05 days |
|||||
| Transit Parameters | |||||
| Livingston et al. 2019 | |||||
| Rp/Rs 0.05 ± 0.001 |
a/Rs 14.4 +0.3 -0.3 |
i 87.74 +0.17 -0.17 deg |
|||
| e - |
ω - deg |
||||
| DepthR* 3.05 mmag |
Duration* 4.56 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 | |||||
| Crossfield et al. 2016 | |||||
| Teff 5406.0 +168.0 -168.0 K |
Log(g) 4.47 +0.18 -0.18 cm/s2 |
Fe/H 0.0 +0.0 0.0 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | HIGH | ||||
| Minimum aperture | 43.64" | ||||
| Total Observations (Recent) | 7 (0) | ||||
| O-C | - | ||||
| ExoClock Observations (Recent) | 0 (0) | ||||
| Space Observations (Recent) | 7 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | 0.0474 ± 0.00063 | ||||
| TESS Rp/Rs | - | ||||
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
|---|---|---|---|---|
| K2-87b (HIGH) 2017-03-18 | K2 | -0.1 ± 2.16 | ||
| K2-87b (HIGH) 2015-04-18 | K2 | -3.23 ± 3.6 | ||
| K2-87b (HIGH) 2015-04-08 | K2 | -1.05 ± 3.89 | ||
| K2-87b (HIGH) 2015-03-29 | K2 | -1.88 ± 4.9 | ||
| K2-87b (HIGH) 2015-03-19 | K2 | 5.77 ± 4.75 | ||
| K2-87b (HIGH) 2015-03-10 | K2 | 8.96 ± 3.74 | ||
| K2-87b (HIGH) 2015-02-18 | K2 | -3.8 ± 2.59 | ||