| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HAT-P-44 DR2 1506159170017461888 J14123457+4700528 |
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| RA | 14:12:34.5714 | DEC | +47:00:53.045 | ||
| Parallax 2.846 mas |
P.M. RA -29.681 mas/y |
P.M. DEC 11.079 mas/y |
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| MagV 13.21 |
MagR 12.83 |
MagI 12.31 |
MagJ 11.729 |
MagH 11.36 |
MagK 11.275 |
| MagG 12.973 |
MagGBP 13.412 |
MagGRP 12.397 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2458419.59101 ± 0.00015 BJDTDB |
|||||
| Period 4.30119068 ± 6.1e-07 days |
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| Transit Parameters | |||||
| Hartman et al. 2014 | |||||
| Rp/Rs 0.1343 ± 0.001 |
a/Rs 11.5 +0.5 -0.8 |
i 89.1 +0.4 -0.4 deg |
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| e - |
ω - deg |
||||
| DepthR* 24.45 mmag |
Duration* 3.21 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. 2014 | |||||
| Teff 5295.0 +100.0 -100.0 K |
Log(g) 4.46 +0.06 -0.06 cm/s2 |
Fe/H 0.33 +0.1 -0.1 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 7.45" | ||||
| Total Observations (Recent) | 66 (8) | ||||
| O-C | 0.5 ± 0.4 minutes | ||||
| ExoClock Observations (Recent) | 45 (8) | ||||
| Space Observations (Recent) | 14 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 7 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.13352 ± 0.00069 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| HAT-P-44b (LOW) 2026-06-10 | Giovanni Calapai Calapai Astronomical Observatory | Celestron C14 Atik 314L+ / R / 90.0 | 1.04 ± 1.58 | |
| HAT-P-44b (LOW) 2026-05-03 | Muhammad Burhan Khan Lodhi Starfront Observatories | ASKAR 91F ZWO ASI533MM PRO / R / 120.0 | -1.39 ± 6.05 | |
| HAT-P-44b (LOW) 2026-04-28 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0 | 0.13 ± 0.95 | |
| HAT-P-44b (LOW) 2026-04-11 | Yen-Hsing Lin Starry House Observatory | Mewlon 300 CRS ASI 6200MM Pro / Lum / 60.0 | 1.27 ± 0.88 | |
| HAT-P-44b (LOW) 2025-06-23 | George Iwaszek Iwaszek Private Observatory | Planewave CDK-17 Moravian C5-100 / V / 90.0 | 2.37 ± 1.09 | |
| HAT-P-44b (LOW) 2025-06-18 | Tommaso Dittadi TD-TRO | Ritchey-Chretien Moravian G2-1600 / R / 180.0 | 3.81 ± 2.3 | |
| HAT-P-44b (LOW) 2025-06-18 | Mario Morales-Aimar Observatorio de Sencelles MPC K14 | 10" Meade Schmidt Cassegrain SBIG ST7-XME / Clear / 150.0 | 1.16 ± 1.15 | |
| HAT-P-44b (LOW) 2025-06-18 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 180.0 | -1.75 ± 0.92 | |
| HAT-P-44b (LOW) 2025-06-06 | Xavier Bros Anysllum | Newton Orion Optics 14" f4.6 ASI2600MM Pro / R / 180.0 | 1.9 ± 2.16 | |
| HAT-P-44b (LOW) 2025-03-24 | Trevor Gainey Kismet | Meade LX200 ZWO ASI 294 MC Pro / R / 292.0 | -3.66 ± 3.74 | |
| HAT-P-44b (LOW) 2025-01-19 | Bryan Martin Tiger Butte Observatory Remote | AG Optical IDK ZWO ASI 294 / R / 180.0 | -2.27 ± 1.87 | |
| HAT-P-44b (LOW) 2024-05-23 | Changhyun Ryu Korea National University of Education MAO | Planwave CDK500 Moravian C3-61000 / rpr / 30.0 | 3.89 ± 7.2 | |
| HAT-P-44b (LOW) 2024-05-14 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0 | -0.99 ± 0.94 | |
| HAT-P-44b (LOW) 2024-04-14 | Dim Stouraitis Galilaios | SCT SXVF-H9 Starlight-Xpress / R / 130.0 | -6.75 ± 2.3 | |
| HAT-P-44b (LOW) 2024-03-20 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0 | -1.07 ± 3.46 | |
| HAT-P-44b (LOW) 2023-06-23 | Mark van der Grijp Trevinca Observatory | William Optics FLT132 Poseidon-M Pro / Lum / 90.0 | 3.27 ± 2.02 | |
| HAT-P-44b (LOW) 2023-05-11 | jean paul vergne CH9-gapra | Ritchey Chretien zwo 294mm pro / Lum / 180.0 | 3.57 ± 2.74 | |
| HAT-P-44b (LOW) 2023-04-15 | Bryan Martin Tiger Butte Observatory Remote | AG Optical IDK ZWO ASI 294 / Lum / 180.0 | 0.02 ± 1.38 | |
| HAT-P-44b (LOW) 2022-05-31 | Jean-François Coliac OABAC | N200 f4 ASI 183mm pro / Clear / 120.0 | 5.37 ± 2.74 | |
| HAT-P-44b (LOW) 2022-05-31 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 90.0 | 2.35 ± 2.16 | |
| HAT-P-44b (LOW) 2022-05-31 | Lorenzo Betti Osservatorio Polifunzionale del Chianti | RC-80cm Moravian G4 - KAF 09000 / V / 120.0 | 1.05 ± 0.72 | |
| HAT-P-44b (LOW) 2022-04-18 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0 | 3.66 ± 1.15 | |
| HAT-P-44b (LOW) 2022-03-24 | Simon Dawes William James II Observatory | Skywatcher MN190 2 ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Lum / 120.0 | 2.71 ± 4.32 | |
| HAT-P-44b (LOW) 2022-03-06 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" FLI Kepler CMOS 4040 / Lum / 180.0 | -2.24 ± 0.86 | |
| HAT-P-44b (LOW) 2021-04-14 | Giorgio Baj M57 | Ritchey-Chretien Sbig STT1603 ME / Clear / 120.0 | -2.25 ± 1.58 | |
| HAT-P-44b (LOW) 2021-03-14 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0 | -3.78 ± 1.87 | |
| HAT-P-44b (LOW) 2021-03-02 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0 | 4.24 ± 1.01 | |
| HAT-P-44b (LOW) 2021-03-02 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0 | 2.94 ± 1.44 | |
| HAT-P-44b (LOW) 2020-04-22 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0 | 5.42 ± 1.3 | |
| HAT-P-44b (LOW) 2019-06-25 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH1 g / gpr / 12.0 | 0.33 ± 0.42 | |
| HAT-P-44b (LOW) 2019-05-13 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH3 i / ipr / 8.0 | -1.82 ± 0.53 | |
| HAT-P-44b (LOW) 2019-05-13 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B - CH2 r / rpr / 12.0 | -2.98 ± 0.43 | |
| HAT-P-44b (LOW) 2019-05-01 | Anaël Wünsche Observatoire des Baronnies Provençales | CDK Planewave SBIG STL11K / Clear / 120.0 | 0.42 ± 1.3 | |
| HAT-P-44b (LOW) 2019-05-01 | Anaël Wünsche Observatoire des Baronnies Provençales | Astelco FLIPL230 / Clear / 120.0 | -0.56 ± 0.36 | |
| HAT-P-44b (LOW) 2019-03-31 | Anaël Wünsche Observatoire des Baronnies Provençales | CDK Planewave SBIG STL11K / Clear / 120.0 | -0.4 ± 1.01 | |
| HAT-P-44b (LOW) 2018-05-21 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH4 z / zpr / 10.0 | 0.55 ± 0.69 | |
| HAT-P-44b (LOW) 2018-05-21 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH1 g / gpr / 12.0 | -0.01 ± 0.49 | |
| HAT-P-44b (LOW) 2018-05-21 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B - CH2 r / rpr / 12.0 | -0.12 ± 0.39 | |
| HAT-P-44b (LOW) 2018-05-21 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH3 i / ipr / 8.0 | -1.49 ± 0.65 | |
| HAT-P-44b (LOW) 2018-05-09 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B - CH2 r / rpr / 12.0 | 0.54 ± 0.65 | |
| HAT-P-44b (LOW) 2018-05-09 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH1 g / gpr / 12.0 | 0.18 ± 0.84 | |
| HAT-P-44b (LOW) 2018-05-09 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH4 z / zpr / 10.0 | -0.41 ± 1.73 | |
| HAT-P-44b (LOW) 2018-05-09 | MUSCAT Team Teide Observatory | Telescope Carlos Sanchez MuSCAT2 - PIXIS: 1024B eXcelon - CH3 i / ipr / 8.0 | -0.81 ± 1.32 | |
| HAT-P-44b (LOW) 2016-06-06 | Alessandro Marchini Astronomical Observatory University of Siena | Mak-Cas 0.3m f/5.6 Sbig STL-6303 / R / 300.0 | 1.44 ± 1.87 | |
| HAT-P-44b (LOW) 2016-03-12 | Anaël Wünsche Observatoire des Baronnies Provençales | CDK Planewave SBIG STL11K / Clear / 120.0 | 3.04 ± 1.58 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| HAT-P-44b (LOW) 2022-04-18 | TESS | 0.32 ± 1.43 | ||
| HAT-P-44b (LOW) 2022-04-14 | TESS | -0.03 ± 1.43 | ||
| HAT-P-44b (LOW) 2022-04-06 | TESS | 1.11 ± 1.15 | ||
| HAT-P-44b (LOW) 2022-04-01 | TESS | 1.05 ± 1.17 | ||
| HAT-P-44b (LOW) 2022-03-24 | TESS | -1.2 ± 1.34 | ||
| HAT-P-44b (LOW) 2022-03-19 | TESS | 0.52 ± 1.2 | ||
| HAT-P-44b (LOW) 2022-03-11 | TESS | 1.45 ± 1.18 | ||
| HAT-P-44b (LOW) 2022-03-06 | TESS | 3.95 ± 1.07 | ||
| HAT-P-44b (LOW) 2022-03-02 | TESS | 2.5 ± 1.44 | ||
| HAT-P-44b (LOW) 2020-04-13 | TESS | 1.12 ± 1.12 | ||
| HAT-P-44b (LOW) 2020-04-09 | TESS | 0.84 ± 1.12 | ||
| HAT-P-44b (LOW) 2020-04-04 | TESS | 1.62 ± 1.44 | ||
| HAT-P-44b (LOW) 2020-03-31 | TESS | -2.62 ± 1.3 | ||
| HAT-P-44b (LOW) 2020-03-22 | TESS | -1.57 ± 1.27 | ||
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2020-02-26 | Maciejewski et al. 2023 | -0.27 ± 0.42 | ||
| 2019-05-01 | Maciejewski et al. 2023 | 0.11 ± 0.53 | ||
| 2019-03-31 | Maciejewski et al. 2023 | 0.39 ± 0.6 | ||
| 2019-02-16 | Maciejewski et al. 2023 | 1.12 ± 1.06 | ||
| 2018-04-08 | Maciejewski et al. 2023 | -0.14 ± 1.24 | ||
| 2018-02-24 | Maciejewski et al. 2023 | 0.84 ± 0.88 | ||
| 2011-05-15 | Hartman et al. 2014 | 0.59 ± 0.35 | ||