exoclock

HAT-P-23b (LOW)

Discovered by: Bakos et al. 2011

The Star
Simbad
GAIA
2MASS		 HAT-P-23
DR2 1808938730710633984
J20242972+1645437
RA 20:24:29.7235 DEC +16:45:43.810
Parallax
2.713 mas		 P.M. RA
13.263 mas/y		 P.M. DEC
-5.412 mas/y
MagV
11.94		 MagR
12.27		 MagI*
11.216		 MagJ
11.103		 MagH
10.846		 MagK
10.791
MagG
12.174		 MagGBP
12.518		 MagGRP
11.679
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2457742.57379 ± 7.2e-05 BJDTDB
Period
1.212886397 ± 7.4e-08 days
Transit Parameters
Ciceri et al. 2015
Rp/Rs
0.1162 ± 0.0008		 a/Rs
4.55 +0.09 -0.09
 i
85.7 +0.9 -0.9 deg
e
-		 ω
- deg
DepthR*
17.48 mmag		 Duration*
2.19 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Bakos et al. 2011
Teff
5905.0 +80.0 -80.0 K
 Log(g)
4.33 +0.05 -0.05 cm/s2
 Fe/H
0.15 +0.04 -0.04 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 6.21"
Total Observations (Recent) 133 (22)
O-C 0.26 ± 0.18 minutes
ExoClock Observations (Recent) 91 (22)
Space Observations (Recent) 0 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 42 (0)
Kepler Rp/Rs -
TESS Rp/Rs -

HAT-P-23b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
HAT-P-23b (LOW)
2024-11-20		Giancarlo Madiai
GMAD48		SC8
ASI 432 MM / R / 60.0		-1.94 ± 3.74
HAT-P-23b (LOW)
2024-11-03		Jacques Michelet
Claix		GSO Ritchey-Chrétien
Poseidon-M Pro / rpr / 180.0		-0.07 ± 1.15
HAT-P-23b (LOW)
2024-11-03		Giovanni Battista Casalnuovo
FSO Filzi School Observatory		RC f/6
ASI 2600 PRO / Clear / 97.0		-0.49 ± 2.16
HAT-P-23b (LOW)
2024-09-30		Rodrigo Castillo
Rodrigo-Moro		Meade ACF-SC 10
Atik 383L+ Mono / Clear / 60.0		0.26 ± 2.02
HAT-P-23b (LOW)
2024-09-07		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		1.19 ± 4.03
HAT-P-23b (LOW)
2024-08-27		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 120.0		0.39 ± 0.62
HAT-P-23b (LOW)
2024-08-27		Andre Kovacs
Moletai Astronomical Observatory (MAO)		35 cm Maksutov f/3.5
Apogee Alta U47 / R / 120.0		-2.66 ± 1.02
HAT-P-23b (LOW)
2024-08-23		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		3.38 ± 3.74
HAT-P-23b (LOW)
2024-08-16		John Collins
JC_Wrexham		Meade LX200GPS
ASI-290m / rpr / 120.0		4.29 ± 3.17
HAT-P-23b (LOW)
2024-08-16		Riccardo Zancan
Riccardo		Celestron C11
ASI-1600-MM / R / 90.0		1.7 ± 2.02
HAT-P-23b (LOW)
2024-08-16		Daniel Kustrin
Daniel Kustrin		Sky Watcher Classic 200P
ZWO ASI2600MM-Pro / R / 180.0		-0.17 ± 1.44
HAT-P-23b (LOW)
2024-08-10		David Quiles
David Quiles Observatory		Celestron EDGEHD 800
Omegon veTEC 571M / R / 300.0		1.02 ± 1.87
HAT-P-23b (LOW)
2024-08-10		Mario Morales-Aimar
Observatorio de Sencelles MPC K14		Reflector 10"
SBIG ST7-XME / Clear / 100.0		-2.99 ± 0.92
HAT-P-23b (LOW)
2024-08-04		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-1.09 ± 3.74
HAT-P-23b (LOW)
2024-07-31		Manfred Raetz
Volkssternwarte Kirchheim		Cassegrain 600/4800
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 240.0		4.99 ± 0.65
HAT-P-23b (LOW)
2024-07-31		Enrique Arce
Vallbona Observatory		Ritchey Chretien
ZWO ASI 294 MM PRO / Clear / 300.0		-0.02 ± 1.58
HAT-P-23b (LOW)
2024-07-31		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / I / 60.0		-0.59 ± 1.58
HAT-P-23b (LOW)
2024-07-31		samuel Diaz Lopez
Tomas Lopez (AstroCamp)		RC10
Atik16200M / V / 180.0		-1.03 ± 1.58
HAT-P-23b (LOW)
2024-07-18		Dim Stouraitis
Galilaios		SCT
SXVF-H9 Starlight-Xpress / R / 90.0		1.08 ± 1.58
HAT-P-23b (LOW)
2024-07-14		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		1.15 ± 0.72
HAT-P-23b (LOW)
2024-07-07		Marc Serrau
A77 - Dauban		Meade SC 12"
QHY260MM / rpr / 180.0		1.63 ± 1.44
HAT-P-23b (LOW)
2024-07-07		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		-0.81 ± 0.79
HAT-P-23b (LOW)
2023-11-10		Mario Morales-Aimar
Observatorio de Sencelles MPC K14		Reflector 10"
SBIG ST7-XME / Clear / 100.0		-1.34 ± 0.84
HAT-P-23b (LOW)
2023-10-07		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		0.48 ± 0.75
HAT-P-23b (LOW)
2023-10-07		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-1.22 ± 1.73
HAT-P-23b (LOW)
2023-10-04		Bryan Martin
Tiger Butte Observatory Remote		AG Optical IDK
ZWO ASI 294 / R / 120.0		-0.7 ± 1.73
HAT-P-23b (LOW)
2023-09-26		Lionel Rousselot
Private observatory Vierzon		Newton 250/740
ZWO 533 monochrome / Lum / 45.0		0.34 ± 1.87
HAT-P-23b (LOW)
2023-09-09		Michael Irzyk
melun		C14
altair 2600 / AstrodonExoPlanet-BB / 90.0		-0.43 ± 0.59
HAT-P-23b (LOW)
2023-09-09		Keith Rickard
Putlands Observatory - CMHASD		Meade LX200 10" SCT Classic
SBIG ST-7XME CCD / R / 120.0		-1.95 ± 3.31
HAT-P-23b (LOW)
2023-08-23		Vojtěch Školník
Hvezdarna Valasske Mezirici		Meade LX90 ACF
MI C2-7000A / Clear / 105.0		0.65 ± 0.99
HAT-P-23b (LOW)
2023-08-17		Sacha Foschino
Observatoire des Baronnies Provençales		Planewave 430mm
SVO ASI 6200 MM Pro / R / 120.0		1.55 ± 1.41
HAT-P-23b (LOW)
2023-08-17		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-0.17 ± 1.44
HAT-P-23b (LOW)
2023-08-11		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-4.58 ± 2.88
HAT-P-23b (LOW)
2023-07-31		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / Lum / 240.0		0.12 ± 0.88
HAT-P-23b (LOW)
2023-07-25		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		2.05 ± 2.02
HAT-P-23b (LOW)
2023-07-14		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / Clear / 120.0		1.63 ± 0.95
HAT-P-23b (LOW)
2023-07-08		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / I / 240.0		2.5 ± 1.58
HAT-P-23b (LOW)
2023-07-04		Javier Alonso Santiago
INAF-OACT		Cassegrain 91cm
Moravian C4-1600EC / R / 90.0		-0.65 ± 0.65
HAT-P-23b (LOW)
2023-06-30		Bryan Martin
Tiger Butte Observatory Remote		AG Optical IDK
ZWO ASI 294 / R / 120.0		-4.26 ± 2.02
HAT-P-23b (LOW)
2023-06-27		Eric Miny
BLOIS SOLOGNE ASTRONOMIE OBSERVATORY		Newton T305
QSI 683WS / Lum / 120.0		-0.27 ± 1.73
HAT-P-23b (LOW)
2023-06-17		jean paul vergne
CH9-gapra		Ritchey Chretien
zwo 294mm pro / Clear / 120.0		0.27 ± 2.02
HAT-P-23b (LOW)
2022-10-02		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 120.0		-1.29 ± 2.16
HAT-P-23b (LOW)
2022-09-15		Sacha Foschino
Observatoire des Baronnies Provençales		Planewave 430mm
SVO ASI 6200 MM Pro / Clear / 120.0		1.85 ± 1.01
HAT-P-23b (LOW)
2022-09-15		Francesco Conti
Francesco Conti		Celestron C8
ZWO ASI533 / Clear / 53.0		-4.3 ± 4.18
HAT-P-23b (LOW)
2022-08-23		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 50.0		2.46 ± 1.32
HAT-P-23b (LOW)
2022-08-23		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 90.0		-3.52 ± 1.58
HAT-P-23b (LOW)
2022-08-12		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		0.63 ± 0.72
HAT-P-23b (LOW)
2022-08-12		Simon Dawes
William James II Observatory		Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Lum / 120.0		-0.96 ± 1.44
HAT-P-23b (LOW)
2022-08-12		Kevin Johnson
Holbrook Observatory		Meade LX10 EMC
Atik 383L+ / Lum / 90.0		-2.11 ± 1.58
HAT-P-23b (LOW)
2022-07-20		Stefano Lora
MarSEC		Ritchey Chrétien
Moravian G2 Mark II / Clear / 90.0		-1.33 ± 0.86
HAT-P-23b (LOW)
2022-07-10		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 60.0		-1.79 ± 1.01
HAT-P-23b (LOW)
2022-07-06		Bryan Martin
Tiger Butte Obseratory		AG Opitcal
ZWO ASI 294 / AstrodonExoPlanet-BB / 120.0		1.03 ± 1.87
HAT-P-23b (LOW)
2022-06-23		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 150.0		-1.06 ± 1.3
HAT-P-23b (LOW)
2022-06-16		Alessandro Marchini
Astronomical Observatory University of Siena		Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 180.0		-1.73 ± 1.15
HAT-P-23b (LOW)
2021-10-25		Trevor Gainey
Kismet		Meade LX200
ZWO ASI 294 MC Pro / Lum / 80.0		-0.76 ± 2.3
HAT-P-23b (LOW)
2021-10-08		Aziz Ettahar Kaeouach
High Atlas Observatory		Celestron C11 hd
Zwo asi 294 mm pro / R / 60.0		1.12 ± 1.44
HAT-P-23b (LOW)
2021-10-08		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		0.4 ± 1.01
HAT-P-23b (LOW)
2021-10-04		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		-1.4 ± 0.58
HAT-P-23b (LOW)
2021-09-17		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		0.19 ± 0.72
HAT-P-23b (LOW)
2021-08-01		Maurice Audejean
Observatoire ChantePerdrix UAI A77		T400
Atik 160 ex / Clear / 5.0		-1.56 ± 0.86
HAT-P-23b (LOW)
2021-07-26		Nello Ruocco
Osservatorio Astronomico Nastro Verde di Sorrento MPC code C82		SC Meade LX200 GPS on equatorial fork
Sbig ST10XME / Clear / 180.0		0.07 ± 1.58
HAT-P-23b (LOW)
2021-07-16		Tim Haymes
Southside Observatory		Newtonian 30cm
QHY174m / Clear / 20.0		0.62 ± 1.87
HAT-P-23b (LOW)
2021-06-12		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		-1.37 ± 1.01
HAT-P-23b (LOW)
2020-10-31		Ferran Grau Horta
Ca L'Ou		Meade ACF 16''
FLI Proline PL1001 / R / 180.0		-0.22 ± 1.44
HAT-P-23b (LOW)
2020-08-24		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		-0.17 ± 0.72
HAT-P-23b (LOW)
2020-08-18		Iakovos Strikis
Elizabeth Observatory of Athens		Sky Watcher Quattro
SBIG STF-8300mm / R / 80.0		-0.56 ± 2.02
HAT-P-23b (LOW)
2020-08-01		Adam Popowicz
Observatory Pyskowice		RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 90.0		1.19 ± 2.59
HAT-P-23b (LOW)
2020-07-28		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 90.0		-1.34 ± 1.15
HAT-P-23b (LOW)
2020-06-28		Mauro Caló
Cavallino		RC
SBIG ST10 / Clear / 120.0		3.95 ± 1.58
HAT-P-23b (LOW)
2020-06-28		Lorenzo Betti
Osservatorio Polifunzionale del Chianti		RC-80cm
Moravian G4 - KAF 09000 / R / 90.0		2.03 ± 0.86
HAT-P-23b (LOW)
2020-06-28		Claudio Lopresti
Claudio Lopresti		Makutov-Newton
CCD Sbig ST8xme / Lum / 240.0		0.21 ± 1.3
HAT-P-23b (LOW)
2020-06-28		Dim Stouraitis
Galilaios		SCT
SXVF-H9 Starlight-Xpress / Clear / 40.0		-0.95 ± 1.15
HAT-P-23b (LOW)
2020-06-18		Fabio Mortari
Hypatia Observatory		Newton 250mm f/4.9
Sbig ST8-XE / R / 200.0		-2.85 ± 1.15
HAT-P-23b (LOW)
2020-06-01		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 90.0		2.2 ± 1.44
HAT-P-23b (LOW)
2019-09-28		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		0.1 ± 0.58
HAT-P-23b (LOW)
2019-09-17		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / V / 120.0		0.93 ± 0.58
HAT-P-23b (LOW)
2019-08-14		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Clear / 120.0		0.67 ± 0.58
HAT-P-23b (LOW)
2019-08-04		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Clear / 120.0		0.93 ± 0.58
HAT-P-23b (LOW)
2018-10-21		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		-0.1 ± 1.01
HAT-P-23b (LOW)
2018-08-27		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 120.0		0.15 ± 0.86
HAT-P-23b (LOW)
2018-07-24		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		-1.11 ± 0.86
HAT-P-23b (LOW)
2018-07-17		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		-1.07 ± 0.86
HAT-P-23b (LOW)
2018-07-11		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 120.0		0.13 ± 1.01
HAT-P-23b (LOW)
2018-06-30		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		1.25 ± 0.86
HAT-P-23b (LOW)
2018-06-30		Alessandro Marchini
Astronomical Observatory University of Siena		Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 300.0		-1.63 ± 1.3
HAT-P-23b (LOW)
2017-11-19		Mario Morales-Aimar
Observatorio de Sencelles MPC K14		10" Meade Schmidt Cassegrain
SBIG ST7-XME / Clear / 100.0		-2.07 ± 1.44
HAT-P-23b (LOW)
2017-10-16		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		0.26 ± 0.86
HAT-P-23b (LOW)
2017-09-29		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 120.0		2.29 ± 0.43
HAT-P-23b (LOW)
2017-09-06		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		0.77 ± 0.86
HAT-P-23b (LOW)
2016-07-19		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		-0.17 ± 0.43
HAT-P-23b (LOW)
2010-08-25		Ramon Naves
Montcabrer		Meade LX200 12" ACF
Sbig ST8xme / R / 240.0		5.22 ± 1.73

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2018-10-16 Salisbury et al. 2021 -0.03 ± 0.86
2018-09-29 Salisbury et al. 2021 3.21 ± 1.34
2018-09-23 Salisbury et al. 2021 3.23 ± 1.08
2018-09-23 Salisbury et al. 2021 1.09 ± 0.98
2018-09-06 Maciejewski et al. 2018 -0.38 ± 0.48
2018-08-27 Salisbury et al. 2021 -0.28 ± 0.86
2018-08-10 Salisbury et al. 2021 0.6 ± 0.65
2018-08-08 Maciejewski et al. 2018 0.19 ± 0.68
2018-08-03 Maciejewski et al. 2018 0.08 ± 0.5
2018-08-03 Salisbury et al. 2021 -0.69 ± 0.95
2018-07-17 Maciejewski et al. 2018 -0.02 ± 0.68
2018-07-17 Salisbury et al. 2021 -0.84 ± 0.78
2018-07-13 Salisbury et al. 2021 -1.42 ± 1.12
2018-07-07 Salisbury et al. 2021 2.74 ± 1.02
2018-07-07 Salisbury et al. 2021 -0.38 ± 1.01
2018-06-30 Salisbury et al. 2021 0.53 ± 1.73
2018-06-30 Salisbury et al. 2021 -0.81 ± 1.08
2018-06-26 Salisbury et al. 2021 1.3 ± 0.82
2017-10-16 Maciejewski et al. 2018 -0.41 ± 0.56
2017-10-05 Salisbury et al. 2021 -0.16 ± 1.09
2017-08-16 Maciejewski et al. 2018 -0.23 ± 0.35
2017-07-30 Maciejewski et al. 2018 -0.32 ± 0.3
2017-07-23 Maciejewski et al. 2018 -0.06 ± 0.3
2016-10-02 Patra et al. 2020 0.61 ± 0.63
2016-09-26 Patra et al. 2020 -0.58 ± 0.89
2016-09-09 Patra et al. 2020 -0.28 ± 0.66
2016-09-07 Maciejewski et al. 2018 -0.31 ± 0.42
2016-09-01 Maciejewski et al. 2018 -0.41 ± 0.24
2016-08-26 Maciejewski et al. 2018 0.05 ± 0.49
2016-08-21 Maciejewski et al. 2018 -0.56 ± 0.49
2016-07-02 Maciejewski et al. 2018 0.18 ± 0.37
2014-09-11 Sada et al. 2016 1.14 ± 0.86
2014-08-25 Sada et al. 2016 0.48 ± 0.75
2013-08-08 Sada et al. 2016 -0.44 ± 0.84
2012-10-04 Sada et al. 2016 0.16 ± 0.81
2012-09-23 Sada et al. 2016 -3.0 ± 1.08
2012-09-06 Sada et al. 2016 0.8 ± 0.92
2011-08-21 Sada et al. 2016 1.45 ± 0.94
2011-08-16 Sada et al. 2016 -1.24 ± 0.89
2011-08-04 Sada et al. 2016 1.04 ± 0.84
2011-06-03 Sada et al. 2016 1.55 ± 0.86
2009-01-20 Bakos et al. 2011 -0.14 ± 0.26
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