| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
NGTS-8 DR2 6840435777723109888 J21555419-1404062 |
||||
| RA | 21:55:54.1981 | DEC | -14:04:06.225 | ||
| Parallax 2.303 mas |
P.M. RA 21.363 mas/y |
P.M. DEC -10.194 mas/y |
|||
| MagV 13.72 |
MagR 13.53 |
MagI* 12.78 |
MagJ 12.14 |
MagH 11.751 |
MagK 11.642 |
| MagG 13.495 |
MagGBP 13.961 |
MagGRP 12.878 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Not verified 
|
|||||
|---|---|---|---|---|---|
| Costes et al. 2020 | |||||
| Mid-time 2457500.17909 ± 0.00072 BJDTDB |
|||||
| Period 2.4997 ± 1e-05 days |
|||||
| Transit Parameters | |||||
| Costes et al. 2020 | |||||
| Rp/Rs 0.114 ± 0.002 |
a/Rs 7.6 +0.18 -0.18 |
i 86.9 +0.5 -0.5 deg |
|||
| e - |
ω - deg |
||||
| DepthR* 16.88 mmag |
Duration* 2.61 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Costes et al. 2020 | |||||
| Teff 5241.0 +50.0 -50.0 K |
Log(g) 4.41 +0.03 -0.03 cm/s2 |
Fe/H 0.24 +0.09 -0.09 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | ALERT | ||||
| Minimum aperture | 9.54" | ||||
| Total Observations (Recent) | 7 (7) | ||||
| O-C | -19.4 ± 0.73 minutes | ||||
| ExoClock Observations (Recent) | 7 (7) | ||||
| Space Observations (Recent) | 0 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | - | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| NGTS-8b (ALERT) 2023-05-30 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 180.0 | -21.74 ± 1.25 | |
| NGTS-8b (ALERT) 2022-10-14 | Vincent Boucher Observatoire de Saint-Véran Paul Felenbok | Astrosib RC500 SBIG STX-16803 / Lum / 180.0 | -15.39 ± 1.58 | |
| NGTS-8b (ALERT) 2022-10-14 | Robert Roth TURMX Observatory | CFF Telescopes 160mm APO ZWO ASI6200MM Pro / Lum / 120.0 | -19.14 ± 2.02 | |
| NGTS-8b (ALERT) 2022-10-14 | Adam Popowicz Otivar dome2 | Newton 12" ASA ASI ZWO 1600MM / R / 240.0 | -19.43 ± 4.61 | |
| NGTS-8b (ALERT) 2022-10-04 | Marc Serrau A77 Dauban | Celestron 11 QHY268 Mono / Clear / 60.0 | -18.42 ± 1.73 | |
| NGTS-8b (ALERT) 2022-10-04 | Jacques Michelet Claix | GSO Ritchey-Chrétien QSI-632 / R / 120.0 | -23.03 ± 2.74 | |
| NGTS-8b (ALERT) 2022-09-24 | Adam Popowicz Otivar dome2 | Newton 12" ASA ASI ZWO 1600MM / R / 240.0 | -19.57 ± 3.6 | |