| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
TYC 4434-596-1 DR2 2259354802894412928 J18391958+6931223 |
||||
| RA | 18:39:19.5873 | DEC | +69:31:22.531 | ||
| Parallax 4.428 mas |
P.M. RA 12.12 mas/y |
P.M. DEC -12.156 mas/y |
|||
| MagV 10.33 |
MagR* 10.093 |
MagI* 9.761 |
MagJ 9.479 |
MagH 9.26 |
MagK 9.243 |
| MagG 10.284 |
MagGBP 10.554 |
MagGRP 9.895 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Not verified 
|
|||||
|---|---|---|---|---|---|
| Dong et al. 2023 | |||||
| Mid-time 2458662.6558 ± 0.0014 BJDTDB |
|||||
| Period 63.48347 ± 0.0001 days |
|||||
| Transit Parameters | |||||
| Dong et al. 2023 | |||||
| Rp/Rs 0.066 ± 0.0004 |
a/Rs** 49.75 +0.12 -0.12 |
i 88.64 +0.38 -0.28 deg |
|||
| e 0.57 +0.12 -0.16 |
ω 79.9 +83.2 -48.2 deg |
||||
| DepthR* 5.35 mmag |
Duration* 4.8 hours |
||||
|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
|||||
| Limb Darkening Parameters | |||||
| Dong et al. 2023 | |||||
| Teff 6341.0 +68.0 -70.0 K |
Log(g) 4.29 +0.07 -0.07 cm/s2 |
Fe/H 0.12 +0.054 -0.056 dex |
|||
| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | ALERT | ||||
| Minimum aperture | 7.77" | ||||
| Total Observations (Recent) | 14 (6) | ||||
| O-C | 55.87 ± 1.34 minutes | ||||
| ExoClock Observations (Recent) | 6 (6) | ||||
| Space Observations (Recent) | 8 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 0 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.06853 ± 0.0004 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| TOI-1859b (ALERT) 2026-04-08 | Tommaso Dittadi TD-TRO | Ritchey-Chretien Moravian G2-1600 / R / 90.0 | 72.39 ± 4.18 | |
| TOI-1859b (ALERT) 2026-04-08 | Gerold Holtkamp Observatory Gerold Holtkamp | Newtonian 305/1500 QHY268M / R / 90.0 | 61.44 ± 7.06 | |
| TOI-1859b (ALERT) 2026-04-08 | Michael Nezel Celle Observatory | CDK 14 QHY 268M / R / 60.0 | 59.14 ± 2.02 | |
| TOI-1859b (ALERT) 2026-04-08 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0 | 57.99 ± 3.02 | |
| TOI-1859b (ALERT) 2026-04-08 | Daniel BOUYSSE OAA46500 | RC TS-Optics f/6.4 PlayerOne-Poseidon-M / Clear / 90.0 | 46.61 ± 3.17 | |
| TOI-1859b (ALERT) 2026-04-08 | Matthieu Bachschmidt Gonachon | Celestron C11 SBIG ST8XME / R / 60.0 | 6.87 ± 6.48 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| TOI-1859b (ALERT) 2022-12-18 | TESS | 5.4 ± 1.11 | ||
| TOI-1859b (ALERT) 2022-10-16 | TESS | 0.3 ± 1.2 | ||
| TOI-1859b (ALERT) 2022-08-13 | TESS | 2.46 ± 1.37 | ||
| TOI-1859b (ALERT) 2022-06-11 | TESS | -3.15 ± 1.27 | ||
| TOI-1859b (ALERT) 2022-02-04 | TESS | -0.58 ± 1.32 | ||
| TOI-1859b (ALERT) 2021-07-28 | TESS | -2.25 ± 1.25 | ||
| TOI-1859b (ALERT) 2020-01-04 | TESS | 2.32 ± 1.08 | ||
| TOI-1859b (ALERT) 2019-08-30 | TESS | 0.33 ± 1.17 | ||