| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HAT-P-28 DR2 363702817083391232 J00520018+3443422 |
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| RA | 00:52:00.1877 | DEC | +34:43:42.203 | ||
| Parallax 2.463 mas |
P.M. RA 25.519 mas/y |
P.M. DEC 2.859 mas/y |
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| MagV 13.03 |
MagR 13.24 |
MagI* 12.142 |
MagJ 11.561 |
MagH 11.206 |
MagK 11.104 |
| MagG 12.872 |
MagGBP 13.3 |
MagGRP 12.275 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2022 | |||||
| Mid-time 2458134.11472 ± 0.0003 BJDTDB |
|||||
| Period 3.25721296 ± 8e-07 days |
|||||
| Transit Parameters | |||||
| Buchhave et al. 2011 | |||||
| Rp/Rs 0.113 ± 0.0024 |
a/Rs 8.4 +0.6 -0.6 |
i 88.0 +0.9 -0.9 deg |
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| e 0.05 +0.03 -0.03 |
ω 233.0 +90.0 -90.0 deg |
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| DepthR* 16.75 mmag |
Duration* 3.31 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 | |||||
| Buchhave et al. 2011 | |||||
| Teff 5680.0 +90.0 -90.0 K |
Log(g) 4.36 +0.06 -0.06 cm/s2 |
Fe/H 0.12 +0.08 -0.08 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 8.59" | ||||
| Total Observations (Recent) | 25 (7) | ||||
| O-C | -0.84 ± 0.47 minutes | ||||
| ExoClock Observations (Recent) | 24 (7) | ||||
| Space Observations (Recent) | 0 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 1 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | - | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| HAT-P-28b (LOW) 2023-11-28 | Martin Crow Burnham Observatory | Celestron C9.25 SX694 mono / R / 200.0 | -1.36 ± 2.45 | |
| HAT-P-28b (LOW) 2023-11-15 | Anaël Wünsche Observatoire des Baronnies Provençales | CDK Planewave 2 ZWO ASI6200 / V / 120.0 | 0.5 ± 1.37 | |
| HAT-P-28b (LOW) 2023-11-15 | Marco Stefanini Osservatorio Aldebaran | Celestron C14 QHY294M Pro / Lum / 150.0 | -0.86 ± 1.58 | |
| HAT-P-28b (LOW) 2023-11-15 | Mark Salisbury POST | Orion Optics ODK SBIG ST-10 XME / Clear / 240.0 | -2.54 ± 0.91 | |
| HAT-P-28b (LOW) 2023-09-14 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0 | -0.58 ± 1.37 | |
| HAT-P-28b (LOW) 2023-09-14 | Martin Crow Burnham Observatory | Celestron C9.25 SX694 mono / Clear / 240.0 | -0.79 ± 1.73 | |
| HAT-P-28b (LOW) 2023-07-15 | Gemma Domènech Observatori Astronòmic Albanyà | Meade ACF F8 Moravian G4-9000 / I / 160.0 | -0.15 ± 2.3 | |
| HAT-P-28b (LOW) 2022-12-08 | Adrian Jones Private Observatory (I64) | Meade ACF 30cm QSI 583 / R / 200.0 | -0.94 ± 1.41 | |
| HAT-P-28b (LOW) 2022-10-07 | Marco Bastoni Bellatrix | GSO RC 10'' Moravian G3-16200 / Lum / 300.0 | -0.99 ± 4.32 | |
| HAT-P-28b (LOW) 2022-07-25 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 180.0 | 1.17 ± 1.3 | |
| HAT-P-28b (LOW) 2022-01-13 | Adrian Jones Private Observatory (I64) | Meade ACF 30cm QSI 583 / R / 150.0 | 2.7 ± 2.59 | |
| HAT-P-28b (LOW) 2022-01-13 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 120.0 | -1.62 ± 4.32 | |
| HAT-P-28b (LOW) 2021-10-17 | Adrian Jones Private Observatory (I64) | Meade ACF 30cm QSI 583 / R / 200.0 | 0.9 ± 4.32 | |
| HAT-P-28b (LOW) 2020-11-13 | Mike Miller Georgetown Observatory | Meade 10 inch ACF f8 f5.6 QSI 540 / V / 120.0 | 2.55 ± 5.76 | |
| HAT-P-28b (LOW) 2020-09-22 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0 | -2.62 ± 1.15 | |
| HAT-P-28b (LOW) 2020-09-09 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0 | 2.2 ± 0.86 | |
| HAT-P-28b (LOW) 2020-08-26 | Dim Stouraitis Galilaios | SCT SXVF-H9 Starlight-Xpress / R / 70.0 | 0.12 ± 1.73 | |
| HAT-P-28b (LOW) 2019-12-03 | Anaël Wünsche Observatoire des Baronnies Provençales | Astelco FLIPL230 / Clear / 60.0 | -2.81 ± 0.86 | |
| HAT-P-28b (LOW) 2019-10-25 | Nikolaos Paschalis Nunki Observatory | Officina Stellare RILA 400 SBIG STXL 11002 / R / 60.0 | 0.43 ± 3.17 | |
| HAT-P-28b (LOW) 2019-10-02 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0 | 1.57 ± 1.58 | |
| HAT-P-28b (LOW) 2018-12-26 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0 | 1.3 ± 1.44 | |
| HAT-P-28b (LOW) 2018-10-12 | Anaël Wünsche Observatoire des Baronnies Provençales | Astelco FLIPL230 / Clear / 60.0 | 0.58 ± 0.58 | |
| HAT-P-28b (LOW) 2018-09-29 | Marc Deldem Les Barres Observatory | Celestron C8 SBIG ST8-XME / Clear / 120.0 | 0.94 ± 3.17 | |
| HAT-P-28b (LOW) 2017-11-17 | Anaël Wünsche Observatoire des Baronnies Provençales | Astelco FLIPL230 / Lum / 120.0 | -0.56 ± 1.15 | |
Literature Mid-times |
||||
| Planet Observation Date |
Reference | O-C minutes |
||
| 2010-08-09 | Buchhave et al. 2011 | -0.03 ± 0.76 | ||