| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HAT-P-17 DR2 1849786481031300608 J21380873+3029193 |
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| RA | 21:38:08.7311 | DEC | +30:29:19.445 | ||
| Parallax 10.796 mas |
P.M. RA -80.395 mas/y |
P.M. DEC -126.972 mas/y |
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| MagV 10.38 |
MagR 10.24 |
MagI* 9.506 |
MagJ 9.017 |
MagH 8.619 |
MagK 8.544 |
| MagG 10.274 |
MagGBP 10.714 |
MagGRP 9.705 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2457168.694753 ± 5.2e-05 BJDTDB |
|||||
| Period 10.33853486 ± 4e-07 days |
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| Transit Parameters | |||||
| Howard et al. 2012 | |||||
| Rp/Rs 0.1238 ± 0.001 |
a/Rs 22.6 +0.5 -0.5 |
i 89.2 +0.2 -0.1 deg |
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| e 0.342 +0.006 -0.006 |
ω 201.0 +1.0 -1.0 deg |
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| DepthR* 20.37 mmag |
Duration* 4.04 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 | |||||
| Howard et al. 2012 | |||||
| Teff 5246.0 +80.0 -80.0 K |
Log(g) 4.52 +0.02 -0.02 cm/s2 |
Fe/H 0.0 +0.08 -0.08 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | MEDIUM | ||||
| Minimum aperture | 5.0" | ||||
| Total Observations (Recent) | 32 (2) | ||||
| O-C | -0.03 ± 0.68 minutes | ||||
| ExoClock Observations (Recent) | 16 (2) | ||||
| Space Observations (Recent) | 6 (0) | ||||
| ETD Observations (Recent) | 4 (0) | ||||
| Literature Mid-times (Recent) | 6 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | 0.12158 ± 0.00022 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| HAT-P-17b (MEDIUM) 2025-09-03 | Arushi Nath Arushi Nath | 12" Ritchey- Chretien Pro ASI 2600 Mono Camera / R / 180.0 | 2.87 ± 1.87 | |
| HAT-P-17b (MEDIUM) 2025-08-03 | Ivo Silvestri Trevinca Skies | Skywatcher Newton 250pds ASI2600MM Duo / Lum / 10.0 | 0.43 ± 2.45 | |
| HAT-P-17b (MEDIUM) 2024-08-26 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / R / 100.0 | -0.55 ± 0.76 | |
| HAT-P-17b (MEDIUM) 2023-07-31 | Miguel Ángel Álava Amat Sarriguren | Meade SC 8" Asi 1600 MM / rpr / 180.0 | 2.16 ± 1.2 | |
| HAT-P-17b (MEDIUM) 2023-07-31 | Guillaume Biesse Observatoire de la colline Tossius | Ritchey Chretien GSO ASI 533 MM - Gain=0 / rpr / 150.0 | -1.91 ± 1.58 | |
| HAT-P-17b (MEDIUM) 2023-06-30 | Robert Roth TURMX Observatory | Planewave CDK17 QHY600M / rpr / 60.0 | 1.69 ± 0.76 | |
| HAT-P-17b (MEDIUM) 2023-06-30 | Mark van der Grijp Trevinca Observatory | William Optics FLT132 Poseidon-M Pro / Lum / 95.0 | -0.61 ± 1.58 | |
| HAT-P-17b (MEDIUM) 2022-10-24 | Simon Dawes William James II Observatory | Skywatcher MN190 2 ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / R / 120.0 | 3.62 ± 2.3 | |
| HAT-P-17b (MEDIUM) 2022-10-24 | Adam Popowicz Otivar dome2 | Newton 12" ASA ASI ZWO 1600MM / R / 15.0 | -2.0 ± 1.44 | |
| HAT-P-17b (MEDIUM) 2022-10-24 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0 | -2.6 ± 1.37 | |
| HAT-P-17b (MEDIUM) 2020-11-20 | Xesco Rubia Stupa Observatory | TOA130NFB Moravian G4-16000 MKII / rpr / 180.0 | 0.7 ± 5.76 | |
| HAT-P-17b (MEDIUM) 2020-11-20 | Leon Bewersdorff Observatory Kipshoven (BLEW) | 20cm Celestron SE QHY600M PH / V / 30.0 | 0.41 ± 1.15 | |
| HAT-P-17b (MEDIUM) 2020-10-20 | Carmelo Falco GALHassin Robotic Telescope 2 (GRT2) | Giacometti-Fogale RC16 Andor Apogee Aspen CG16M / R / 25.0 | -0.59 ± 0.58 | |
| HAT-P-17b (MEDIUM) 2018-11-17 | Manfred Raetz privat observatory Herges-Hallenberg | SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / R / 120.0 | 0.81 ± 0.86 | |
| HAT-P-17b (MEDIUM) 2017-08-19 | Anaël Wünsche Observatoire des Baronnies Provençales | CDK Planewave SBIG STL11K / V / 60.0 | -0.3 ± 1.15 | |
| HAT-P-17b (MEDIUM) 2010-09-12 | Ramon Naves Montcabrer | Meade LX200 12" ACF Sbig ST8xme / R / 120.0 | 0.91 ± 0.92 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| HAT-P-17b (MEDIUM) 2022-09-23 | TESS | -0.69 ± 0.35 | ||
| HAT-P-17b (MEDIUM) 2022-09-13 | TESS | 0.62 ± 0.4 | ||
| HAT-P-17b (MEDIUM) 2022-09-03 | TESS | -0.42 ± 0.36 | ||
| HAT-P-17b (MEDIUM) 2022-08-23 | TESS | -0.33 ± 0.33 | ||
| HAT-P-17b (MEDIUM) 2019-09-03 | TESS | -0.1 ± 0.36 | ||
| HAT-P-17b (MEDIUM) 2019-08-23 | TESS | 0.7 ± 0.36 | ||
ETD Observations |
||||
| Planet Observation Date |
Observer(s) | ETD link | O-C minutes |
|
| HAT-P-17b (MEDIUM) 2019-07-23 | M. Tylšar, M. Mašek, R. Novák | 1563999746 | -0.26 ± 2.74 | |
| HAT-P-17b (MEDIUM) 2016-06-22 | David Molina | 1466612287 | -0.11 ± 1.15 | |
| HAT-P-17b (MEDIUM) 2015-08-16 | Yenal Ogmen | 1439800513 | 1.11 ± 0.58 | |
| HAT-P-17b (MEDIUM) 2012-09-16 | Christophe Gillier, Romain Montaigut, Serge Golovanow | 1349552522 | -0.49 ± 0.58 | |
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2019-08-23 | Maciejewski et al. 2023 | 0.85 ± 0.46 | ||
| 2017-09-19 | Maciejewski et al. 2023 | 0.07 ± 0.7 | ||
| 2014-07-20 | Mancini et al. 2022 | -0.8 ± 0.79 | ||
| 2013-11-24 | Tsiaras et al. 2018 | 0.01 ± 0.07 | ||
| 2012-07-15 | Mancini et al. 2022 | -0.32 ± 0.79 | ||
| 2008-11-30 | Howard et al. 2012 | -0.1 ± 0.29 | ||