| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HAT-P-65 DR2 1757302881526250496 J21033731+1159218 |
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| RA | 21:03:37.3130 | DEC | +11:59:21.818 | ||
| Parallax 1.326 mas |
P.M. RA 4.218 mas/y |
P.M. DEC -6.154 mas/y |
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| MagV 13.16 |
MagR 13.02 |
MagI 12.46 |
MagJ 11.892 |
MagH 11.604 |
MagK 11.528 |
| MagG 12.995 |
MagGBP 13.355 |
MagGRP 12.481 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2458506.71868 ± 0.00022 BJDTDB |
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| Period 2.60544775 ± 5.5e-07 days |
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| Transit Parameters | |||||
| Hartman et al. 2016 | |||||
| Rp/Rs 0.1045 ± 0.0024 |
a/Rs 4.57 +0.2 -0.2 |
i 84.2 +1.3 -1.3 deg |
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| e - |
ω - deg |
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| DepthR* 13.77 mmag |
Duration* 4.43 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 | |||||
| Hartman et al. 2016 | |||||
| Teff 5835.0 +51.0 -51.0 K |
Log(g) 3.98 +0.04 -0.04 cm/s2 |
Fe/H 0.1 +0.08 -0.08 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 7.96" | ||||
| Total Observations (Recent) | 28 (6) | ||||
| O-C | 0.01 ± 1.42 minutes | ||||
| ExoClock Observations (Recent) | 18 (6) | ||||
| Space Observations (Recent) | 7 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 3 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.1002 ± 0.0013 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| HAT-P-65b (LOW) 2025-08-11 | Giovanni Calapai Home Astronomical Observatory | Celestron 11 Schmidt-Cassegrain Atik 314L+ / Clear / 90.0 | 7.47 ± 5.47 | |
| HAT-P-65b (LOW) 2025-08-11 | Tommaso Dittadi TD-TRO | Ritchey-Chretien Moravian G2-1600 / R / 240.0 | 6.17 ± 7.78 | |
| HAT-P-65b (LOW) 2025-08-11 | Michael Nezel Celle Observatory | CDK 14 QHY 268M / R / 180.0 | -1.89 ± 3.02 | |
| HAT-P-65b (LOW) 2025-08-11 | Matthieu Bachschmidt Gonachon | Celestron C11 SBIG ST8XME / AstrodonExoPlanet-BB / 150.0 | -4.77 ± 2.3 | |
| HAT-P-65b (LOW) 2025-07-28 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 180.0 | 4.64 ± 2.88 | |
| HAT-P-65b (LOW) 2025-07-15 | Tommaso Dittadi TD-TRO | Ritchey-Chretien Moravian G2-1600 / I / 240.0 | 8.59 ± 6.48 | |
| HAT-P-65b (LOW) 2023-09-04 | Thomas Mollier Tomastro | Newtonian ZWO ASI1600MMC / rpr / 120.0 | 3.64 ± 4.03 | |
| HAT-P-65b (LOW) 2023-09-04 | Marc Serrau A77 - Dauban | Meade SC 12" QHY260MM / rpr / 180.0 | -5.15 ± 3.02 | |
| HAT-P-65b (LOW) 2023-08-22 | Dim Stouraitis Galilaios | SCT SXVF-H9 Starlight-Xpress / R / 150.0 | 2.54 ± 3.74 | |
| HAT-P-65b (LOW) 2023-08-22 | Nataliia Maslennikova Caucasus Mountain Observatory SAI MSU | RC-600 ASA Andor iKon-L / gpr / 100.0 | 0.96 ± 1.87 | |
| HAT-P-65b (LOW) 2023-08-22 | Andre Kovacs Moletai Astronomical Observatory (MAO) | 35 cm Maksutov f/3.5 Apogee Alta U47 / Clear / 60.0 | -1.64 ± 2.59 | |
| HAT-P-65b (LOW) 2023-07-20 | Tobias Gesser TURMX Observatory | Planewave CDK17 QHY600M / rpr / 120.0 | 8.47 ± 2.45 | |
| HAT-P-65b (LOW) 2022-08-23 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Clear / 180.0 | 2.38 ± 2.02 | |
| HAT-P-65b (LOW) 2020-10-06 | Francois Regembal HRTobs | Astrosib RC360 SBIG STX 16803 / Lum / 120.0 | 6.2 ± 4.32 | |
| HAT-P-65b (LOW) 2020-08-13 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Clear / 120.0 | 0.88 ± 1.58 | |
| HAT-P-65b (LOW) 2020-08-07 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0 | 2.17 ± 1.87 | |
| HAT-P-65b (LOW) 2020-08-07 | Alberto Tomatis Alto-Observatory | RC STL 6303 / Lum / 40.0 | -3.02 ± 3.6 | |
| HAT-P-65b (LOW) 2019-07-21 | Anaël Wünsche Observatoire des Baronnies Provençales | CDK Planewave SBIG STL11K / Clear / 240.0 | 0.61 ± 3.6 | |
Space Observations |
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| Planet Observation Date |
Mission | O-C minutes |
||
| HAT-P-65b (LOW) 2022-08-28 | TESS | -0.35 ± 3.02 | ||
| HAT-P-65b (LOW) 2022-08-25 | TESS | -1.58 ± 2.45 | ||
| HAT-P-65b (LOW) 2022-08-23 | TESS | -2.81 ± 2.59 | ||
| HAT-P-65b (LOW) 2022-08-20 | TESS | 4.89 ± 2.45 | ||
| HAT-P-65b (LOW) 2022-08-12 | TESS | -0.23 ± 2.74 | ||
| HAT-P-65b (LOW) 2022-08-10 | TESS | 2.58 ± 2.45 | ||
| HAT-P-65b (LOW) 2022-08-07 | TESS | -1.39 ± 2.74 | ||
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2020-08-07 | Chen et al. 2021 | -0.97 ± 0.49 | ||
| 2018-07-30 | Chen et al. 2021 | 0.07 ± 0.42 | ||
| 2013-04-26 | Hartman et al. 2016 | 0.24 ± 0.66 | ||