exoclock

HAT-P-44b

Discovered by: Hartman et al. 2014

The Star
Simbad
GAIA
2MASS		 HAT-P-44
DR2 1506159170017461888
J14123457+4700528
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
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
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2021
Mid-time
2457284.0768 ± 0.0004 BJDTDB
Period
4.30119 ± 1e-06 days
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
e
-		 ω
- deg
DepthR*
24.45 mmag		 Duration*
3.21 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted to produce a duration that matches the observations.

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
ExoClock Status
Observing Priority
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		LOW
16 (6)

1

0.7±0.3

HAT-P-44b


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2022-05-31 Jean-François Coliac
OABAC		 N200 f4
ASI 183mm pro / Clear / 120.0		 5.7 ± 2.7
2022-05-31 Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		 Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 90.0		 2.7 ± 2.2
2022-05-31 Lorenzo Betti
Osservatorio Polifunzionale del Chianti		 RC-80cm-G4
Moravian G4 - KAF 09000 / V / 120.0		 1.4 ± 0.7
2022-04-18 Manfred Raetz
privat observatory Herges-Hallenberg		 SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		 4.0 ± 1.2
2022-03-24 Simon Dawes
William James II Observatory		 Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Lum / 120.0		 3.1 ± 4.3
2022-03-06 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
FLI Kepler CMOS 4040 / Lum / 180.0		 -1.9 ± 0.9
2021-04-14 Giorgio Baj
M57		 Ritchey-Chretien
Sbig STT1603 ME / Clear / 120.0		 -2.0 ± 1.6
2021-03-14 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		 -3.5 ± 1.9
2021-03-02 Manfred Raetz
privat observatory Herges-Hallenberg		 SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		 4.5 ± 1.0
2021-03-02 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		 3.2 ± 1.4
2020-04-22 Manfred Raetz
privat observatory Herges-Hallenberg		 SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		 5.6 ± 1.3 - Data available
2019-05-01 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / Clear / 120.0		 0.5 ± 1.3 - Data available
2019-05-01 Anaël Wünsche
Observatoire des Baronnies Provençales		 Astelco
FLIPL230 / Clear / 120.0		 -0.4 ± 0.4 - Data available
2019-03-31 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / Clear / 120.0		 -0.3 ± 1.0 - Data available
2016-06-06 Alessandro Marchini
Astronomical Observatory, University of Siena		 Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 300.0		 1.3 ± 1.9
2016-03-12 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / Clear / 120.0		 2.9 ± 1.6 - Data available


Literature Mid-times

Observation
Date		 Mid-time Time format Reference O-C
minutes
2011-05-15 2455696.93695 ± 0.00024 BJD_UTC Hartman et al. 2014 0.0 ± 0.3
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