| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
Qatar 8 DR2 1076515002779544960 J10293910+7031378 |
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| RA | 10:29:39.1059 | DEC | +70:31:37.649 | ||
| Parallax 3.524 mas |
P.M. RA -46.527 mas/y |
P.M. DEC -9.597 mas/y |
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| MagV 11.71 |
MagR* 11.126 |
MagI* 10.988 |
MagJ 10.296 |
MagH 10.005 |
MagK 9.937 |
| MagG 11.349 |
MagGBP 11.698 |
MagGRP 10.861 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2022 | |||||
| Mid-time 2459362.37977 ± 0.0002 BJDTDB |
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| Period 3.7146458 ± 2.9e-06 days |
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| Transit Parameters | |||||
| Maciejewski 2020 | |||||
| Rp/Rs 0.1014 ± 0.0031 |
a/Rs** 6.39 +0.05 -0.05 |
i 84.6 +1.3 -1.1 deg |
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| e - |
ω - deg |
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| DepthR* 12.32 mmag |
Duration* 4.13 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 | |||||
| Alsubai et al. 2019 | |||||
| Teff 5738.0 +51.0 -51.0 K |
Log(g) 4.21 +0.02 -0.02 cm/s2 |
Fe/H 0.025 +0.071 -0.071 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 5.0" | ||||
| Total Observations (Recent) | 34 (5) | ||||
| O-C | 1.12 ± 0.5 minutes | ||||
| ExoClock Observations (Recent) | 20 (5) | ||||
| Space Observations (Recent) | 13 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 1 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.10522 ± 0.00035 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| Qatar-8b (LOW) 2024-04-01 | Ramon Naves Montcabrer | Meade LX200 12" ACF Moravian G4-9000 / rpr / 120.0 | 1.3 ± 1.25 | |
| Qatar-8b (LOW) 2024-03-06 | John Collins JC_Wrexham | Meade LX200GPS ASI-290m / rpr / 22.0 | 6.95 ± 2.74 | |
| Qatar-8b (LOW) 2024-03-06 | Carmelo Falco Racalmuto - G. Lemaitre Observatory | Ritchey-Chrétien 16” F/8 + RM500 Mount Andor Aspen CG16M / Lum / 30.0 | 1.05 ± 2.45 | |
| Qatar-8b (LOW) 2024-03-06 | Jacques Michelet Claix | GSO Ritchey-Chrétien Poseidon-M Pro / rpr / 120.0 | -3.56 ± 1.58 | |
| Qatar-8b (LOW) 2024-01-26 | Sacha Foschino Observatoire des Baronnies Provençales | Planewave 430mm SVO ASI 6200 MM Pro / R / 120.0 | 7.1 ± 1.87 | |
| Qatar-8b (LOW) 2023-04-03 | Mark Salisbury POST | Orion Optics ODK SBIG ST-10 XME / R / 240.0 | 1.04 ± 0.84 | |
| Qatar-8b (LOW) 2023-04-03 | Simon Dawes William James II Observatory | Skywatcher MN190 2 ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Lum / 75.0 | 0.57 ± 2.3 | |
| Qatar-8b (LOW) 2023-03-20 | Mark van der Grijp Trevinca Observatory | William Optics FLT132 ZWO ASI2600mm Pro / Lum / 35.0 | -0.75 ± 2.16 | |
| Qatar-8b (LOW) 2023-02-10 | Miguel Ángel Álava Amat Sarriguren | Meade SC 8" Asi 1600 MM / Lum / 180.0 | 2.15 ± 1.41 | |
| Qatar-8b (LOW) 2023-02-10 | Guillaume Bernard Bernard Guillaume | Kepler GSO RC 200 ZWO ASI GT 1600 / Clear / 120.0 | -4.99 ± 3.17 | |
| Qatar-8b (LOW) 2022-04-16 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" FLI Kepler CMOS 4040 / R / 90.0 | -1.52 ± 2.45 | |
| Qatar-8b (LOW) 2022-03-21 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0 | -3.65 ± 1.58 | |
| Qatar-8b (LOW) 2022-02-26 | Vikrant Kumar Agnihotri Cepheid Observatory India | C11/f6.3 Schmidt-Cassegrain SX-35 TRIUS mono (KAF11002) / Clear / 120.0 | -3.83 ± 3.46 | |
| Qatar-8b (LOW) 2022-02-23 | Simon Dawes William James II Observatory | Skywatcher MN190 2 ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Lum / 60.0 | -0.16 ± 2.02 | |
| Qatar-8b (LOW) 2022-01-16 | Mark Phillips Forthimage | OO Newtonian CCD Atik 460EX / R / 55.0 | 2.8 ± 3.46 | |
| Qatar-8b (LOW) 2022-01-16 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 120.0 | 2.37 ± 4.18 | |
| Qatar-8b (LOW) 2022-01-16 | Andras Dan Rocca1 | Celestron C8 QHY 183 M / AstrodonExoPlanet-BB / 60.0 | 0.21 ± 1.87 | |
| Qatar-8b (LOW) 2022-01-16 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" FLI Kepler CMOS 4040 / R / 120.0 | -0.94 ± 2.02 | |
| Qatar-8b (LOW) 2021-12-07 | Adrian Jones Private Observatory (I64) | Meade ACF 30cm QSI 583 / R / 100.0 | 4.39 ± 2.88 | |
| Qatar-8b (LOW) 2021-12-07 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 120.0 | 3.09 ± 2.02 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| Qatar-8b (LOW) 2021-08-17 | TESS | 0.59 ± 0.94 | ||
| Qatar-8b (LOW) 2021-08-13 | TESS | -0.95 ± 0.96 | ||
| Qatar-8b (LOW) 2021-08-10 | TESS | 1.26 ± 1.3 | ||
| Qatar-8b (LOW) 2021-07-30 | TESS | 0.72 ± 1.09 | ||
| Qatar-8b (LOW) 2021-07-26 | TESS | 1.05 ± 1.09 | ||
| Qatar-8b (LOW) 2021-07-22 | TESS | -0.11 ± 0.91 | ||
| Qatar-8b (LOW) 2021-07-18 | TESS | -0.72 ± 0.98 | ||
| Qatar-8b (LOW) 2021-07-15 | TESS | -1.97 ± 0.95 | ||
| Qatar-8b (LOW) 2021-07-11 | TESS | -0.5 ± 0.92 | ||
| Qatar-8b (LOW) 2021-07-07 | TESS | 0.17 ± 0.92 | ||
| Qatar-8b (LOW) 2021-07-04 | TESS | -1.25 ± 1.09 | ||
| Qatar-8b (LOW) 2021-06-30 | TESS | -0.51 ± 0.89 | ||
| Qatar-8b (LOW) 2021-06-26 | TESS | 1.4 ± 0.91 | ||
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2018-04-02 | Alsubai et al. 2019 | 0.33 ± 1.22 | ||