exoclock

HAT-P-54b

Discovered by: Bakos et al. 2015

The Star
Simbad
GAIA
2MASS		 HAT-P-54
DR2 3383298227579280640
J06393552+2528571
RA 06:39:35.5182 DEC +25:28:57.157
Parallax
6.933 mas		 P.M. RA
-0.073 mas/y		 P.M. DEC
-33.237 mas/y
MagV
13.505		 MagR*
12.752		 MagI*
12.062		 MagJ
11.145		 MagH
10.487		 MagK
10.326
MagG
13.017		 MagGBP
13.797		 MagGRP
12.181
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2021
Mid-time
2458419.62257 ± 0.00019 BJDTDB
Period
3.7998534 ± 8e-07 days
Transit Parameters
Bakos et al. 2015
Rp/Rs
0.1572 ± 0.002		 a/Rs
14.34 +0.22 -0.22
 i
87.04 +0.08 -0.08 deg
e
-		 ω
- deg
DepthR*
27.05 mmag		 Duration*
1.8 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted to produce a duration that matches the observations.

Limb Darkening Parameters
Bakos et al. 2015
Teff
4390.0 +50.0 -50.0 K
 Log(g)
4.67 +0.01 -0.01 cm/s2
 Fe/H
-0.13 +0.08 -0.08 dex
ExoClock Status
Observing Priority
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		LOW
47 (13)

1

0.67±0.12

HAT-P-54b


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2022-03-19 Mark Salisbury
POST		 Orion Optics ODK
SBIG ST-10 XME / R / 240.0		 1.3 ± 0.7
2022-03-19 Simon Dawes
William James II Observatory		 Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Lum / 120.0		 -0.1 ± 2.3
2022-02-28 Michael Irzyk
Melun		 C14
H694 / Clear / 60.0		 1.0 ± 0.7
2022-02-28 Yannic Delisle
Buthiers UAI 199		 Custome made
SBIG ST-8300M/C / Clear / 30.0		 -0.3 ± 0.9
2022-02-28 Valère Perroud
Observatoire de Duines		 RC 10
Moravian G2-4000 / Lum / 120.0		 -0.7 ± 2.0
2022-02-28 Marc Deldem
Les Barres Observatory		 Celestron C8
SBIG ST8-XME / Clear / 180.0		 -0.7 ± 1.4
2022-02-09 Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		 Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 150.0		 5.0 ± 1.9
2022-02-09 Fran Campos
Puig d'Agulles Observtory		 RC14" on EQ8 German mount
SBIG ST-8XME / R / 180.0		 0.5 ± 1.2
2022-02-09 Alessandro Marchini
Astronomical Observatory, University of Siena		 Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 300.0		 -0.8 ± 1.3
2022-01-21 Cyrille Aumasson
observatory of Baronnies Provençales		 ASTELCO 31.5"
FLI PL230 / R / 120.0		 0.2 ± 0.6
2021-12-11 David Arnot
OSO PIRATE		 PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 60.0		 4.2 ± 1.0
2021-12-07 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 -1.9 ± 0.9
2021-11-18 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 0.5 ± 1.0
2021-03-23 Anaël Wünsche
Observatoire des Baronnies Provençales		 Astelco
FLIPL230 / Clear / 120.0		 4.2 ± 1.3
2021-03-23 Mario Morales Aimar
Observatorio de Sencelles MPC K14		 Reflector 10"
SBIG ST7-XME / Clear / 180.0		 -2.0 ± 2.4
2021-03-20 Paul Benni
Acton Sky Portal		 C11 EdgeHD
SBIG ST8XME / Astrodon ExoPlanet-BB / 40.0		 -0.4 ± 1.0
2021-03-04 Antonio Marino
UAN c/o INAF-Osservatorio Astronomico di Capodimonte, Naples ITALY		 MEADE
CCD Atik 383L / R / 120.0		 3.5 ± 3.5
2021-03-01 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 2.8 ± 1.0
2021-02-10 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 1.3 ± 0.7
2021-01-22 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 2.5 ± 2.3
2021-01-14 Taewoo Kim
Deokheung Optical Astronomy Observatory		 NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0		 1.2 ± 0.4
2021-01-06 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / U / 120.0		 2.0 ± 0.9
2020-12-11 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 1.1 ± 0.7 - Data available
2020-11-22 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 -0.9 ± 0.6 - Data available
2020-11-07 Manfred Raetz
privat observatory Herges-Hallenberg		 SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		 -0.4 ± 0.7 - Data available
2020-10-26 Taewoo Kim
Deokheung Optical Astronomy Observatory		 NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0		 0.1 ± 0.4 - Data available
2020-10-19 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 0.8 ± 0.7 - Data available
2020-03-27 John Savage
Z42 Rushay Farm Observatory		 Celeston 14Edge with focal reducer
ATIK One 9.0 / R / 240.0		 2.4 ± 1.0 - Data available
2020-03-27 Geoffrey Thurston
I67		 Celestron C-14
Atik 314L+ / R / 240.0		 -1.2 ± 1.3 - Data available
2020-03-27 Danilo Sedita
Osservatorio Sedita Castrofilippo		 RC GSO 14"
Moravian G2-1600 / R / 90.0		 -2.5 ± 1.6 - Data available
2020-03-08 Alberto Tomatis
Alto-Observatory		 RC
STL 6303 / Lum / 120.0		 -0.2 ± 2.7 - Data available
2020-02-26 Wonseok Kang
Deokheung Optical Astronomy Observatory		 NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 90.0		 -1.2 ± 0.6 - Data available
2020-02-22 Vikrant Kumar Agnihotri
Cepheid Observatory India		 C11-A XLT Schmidt-Cassegrain/F5.12
Atik414ex mono / Astrodon ExoPlanet-BB / 45.0		 -0.4 ± 1.0 - Data available
2020-02-18 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 0.3 ± 1.0 - Data available
2020-02-18 Alessandro Nastasi
Galhassin Robotic Telescope (GRT)		 Officina Stellare RiLa 400
FLI ProLine 16803 / Lum / 40.0		 -0.1 ± 0.7 - Data available
2020-01-30 Dim Stouraitis
Galilaios		 SCT
SXVF-H9 Starlight-Xpress / R / 60.0		 0.1 ± 1.4 - Data available
2020-01-27 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 4.2 ± 0.9 - Data available
2020-01-11 Claudio Lopresti
Claudio Lopresti		 Mak-Newton
CCD Sbig ST10xme / Clear / 240.0		 0.5 ± 3.2 - Data available
2020-01-04 Martin Fowler
MicroObservatory Cecilia		 MicroObservatory robotic telescope
KAF 1402ME / Clear / 60.0		 -1.2 ± 5.8 - Data available
2019-12-23 Alessandro Marchini
Astronomical Observatory, University of Siena		 Mak-Cas 0.3m f/5.6
Sbig STL-6303 / I / 300.0		 0.4 ± 1.3
2019-10-05 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 2.6 ± 0.7 - Data available
2019-02-22 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 0.4 ± 0.7 - Data available
2019-02-03 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 2.7 ± 0.9 - Data available
2019-01-15 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 0.3 ± 0.9 - Data available
2019-01-12 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 1.1 ± 1.0 - Data available
2018-12-27 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 0.5 ± 0.6 - Data available
2018-12-05 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		 2.4 ± 1.0 - Data available


Literature Mid-times

Observation
Date		 Mid-time Time format Reference O-C
minutes
2013-01-06 2456299.3037 ± 0.00024 BJD_UTC Bakos et al. 2015 0.2 ± 0.3
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