| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
K2-284 DR2 3413793491812093824 J05163376+2015184 |
||||
| RA | 05:16:33.7637 | DEC | +20:15:18.364 | ||
| Parallax 9.293 mas |
P.M. RA 25.0 mas/y |
P.M. DEC -45.938 mas/y |
|||
| MagV 13.322 |
MagR* 12.601 |
MagI* 11.787 |
MagJ 10.868 |
MagH 10.206 |
MagK 10.058 |
| MagG 12.86 |
MagGBP 13.694 |
MagGRP 11.986 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2022 | |||||
| Mid-time 2458146.80246 ± 0.00062 BJDTDB |
|||||
| Period 4.7948599 ± 5e-06 days |
|||||
| Transit Parameters | |||||
| David et al. 2018 | |||||
| Rp/Rs 0.042 ± 0.0013 |
a/Rs 16.84 +0.62 -0.7 |
i 89.0 +0.65 -0.62 deg |
|||
| e 0.078 +0.108 -0.055 |
ω 180.2 +126.4 -129.6 deg |
||||
| DepthR* 2.36 mmag |
Duration* 2.17 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| David et al. 2018 | |||||
| Teff 4140.0 +50.0 -50.0 K |
Log(g) 4.67 +0.01 -0.01 cm/s2 |
Fe/H 0.0 +0.08 -0.08 dex |
|||
| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | HIGH | ||||
| Minimum aperture | 40.17" | ||||
| Total Observations (Recent) | 14 (1) | ||||
| O-C | -3.05 ± 2.59 minutes | ||||
| ExoClock Observations (Recent) | 1 (1) | ||||
| Space Observations (Recent) | 13 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | 0.0413 ± 0.00098 | ||||
| TESS Rp/Rs | 0.0516 ± 0.0029 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| K2-284b (HIGH) 2023-11-08 | Florence Libotte Calar Alto | CaHa 1.23m CCD DLR-MKIII / R / 120.0 | -3.05 ± 2.59 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| K2-284b (HIGH) 2021-11-18 | TESS | 0.53 ± 7.06 | ||
| K2-284b (HIGH) 2021-11-09 | TESS | 2.0 ± 8.35 | ||
| K2-284b (HIGH) 2021-10-30 | TESS | 3.76 ± 23.04 | ||
| K2-284b (HIGH) 2021-10-25 | TESS | -0.05 ± 6.19 | ||
| K2-284b (HIGH) 2021-10-01 | TESS | -0.48 ± 13.54 | ||
| K2-284b (HIGH) 2021-09-17 | TESS | -1.37 ± 4.9 | ||
| K2-284b (HIGH) 2017-05-14 | K2 | 2.12 ± 2.16 | ||
| K2-284b (HIGH) 2017-04-20 | K2 | -0.04 ± 2.74 | ||
| K2-284b (HIGH) 2017-04-10 | K2 | 2.73 ± 4.18 | ||
| K2-284b (HIGH) 2017-04-06 | K2 | -9.28 ± 4.46 | ||
| K2-284b (HIGH) 2017-03-27 | K2 | 0.68 ± 7.78 | ||
| K2-284b (HIGH) 2017-03-22 | K2 | -3.41 ± 4.32 | ||
| K2-284b (HIGH) 2017-03-13 | K2 | 5.69 ± 9.65 | ||