exoclock

HAT-P-25b

Discovered by: Quinn et al. 2012

The Star
Simbad
GAIA
2MASS		 HAT-P-25
DR2 111322601672419712
J03134450+2511506
RA 03:13:44.4981 DEC +25:11:50.687
Parallax
3.301 mas		 P.M. RA
13.49 mas/y		 P.M. DEC
-13.586 mas/y
MagV
13.15		 MagR
13.22		 MagI
11.98		 MagJ
11.319		 MagH
10.908		 MagK
10.815
MagG
12.842		 MagGBP
13.38		 MagGRP
12.172
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2021
Mid-time
2456590.49235 ± 0.00022 BJDTDB
Period
3.6528162 ± 8e-07 days
Transit Parameters
Wang et al. 2018
Rp/Rs
0.1269 ± 0.0011		 a/Rs
10.9 +0.3 -0.3
 i
88.2 +0.5 -0.4 deg
e
0.023 +0.022 -0.014
 ω
287.0 +52.0 -17.0 deg
DepthR*
21.08 mmag		 Duration*
2.81 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted to produce a duration that matches the observations.

Limb Darkening Parameters
Quinn et al. 2012
Teff
5500.0 +80.0 -80.0 K
 Log(g)
4.48 +0.04 -0.04 cm/s2
 Fe/H
0.31 +0.08 -0.08 dex
ExoClock Status
Observing Priority
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		LOW
11 (5)

14

0.4±0.4

HAT-P-25b


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2022-01-20 Marc SERRAU
A77 Dauban		 Celestron 11
ST8-XME / R / 60.0		 -4.2 ± 2.6
2021-10-17 Fabio Mortari
Hypatia Observatory		 Ritchey Chretienne 250mm f/5.3
Sbig ST8-XE / R / 200.0		 -4.3 ± 2.7
2021-10-03 Yves Jongen
Deep Sky Chile		 Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		 -1.7 ± 1.2
2021-09-15 Adam Popowicz
Observatory Pyskowice		 RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / Clear / 480.0		 1.0 ± 4.3
2021-09-15 Dim Stouraitis
Galilaios		 SCT
SXVF-H9 Starlight-Xpress / R / 120.0		 -1.3 ± 2.7
2020-11-04 Martin Crow
Burnham Observatory		 Celestron C9.25
SX694 mono / R / 60.0		 2.1 ± 2.2
2016-01-24 Anaël Wünsche
Observatoire des Baronnies Provençales		 Astelco
FLIPL230 / Lum / 60.0		 -0.1 ± 0.7 - Data available
2015-12-12 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / Clear / 240.0		 -3.3 ± 1.9 - Data available
2015-11-01 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / Clear / 240.0		 4.0 ± 1.9 - Data available
2015-02-11 Anaël Wünsche
Observatoire des Baronnies Provençales		 Astelco
FLIPL230 / V / 60.0		 2.5 ± 0.7 - Data available
2015-02-11 Anaël Wünsche
Observatoire des Baronnies Provençales		 CDK Planewave
SBIG STL11K / Clear / 60.0		 -0.2 ± 0.9 - Data available


Literature Mid-times

Observation
Date		 Mid-time Time format Reference O-C
minutes
2017-12-18 2458106.40933 ± 0.00062 BJD_TDB Mallonn et al. 2019 -2.5 ± 0.9
2017-12-07 2458095.45305 ± 0.00064 BJD_TDB Mallonn et al. 2019 0.6 ± 0.9
2016-11-04 2457697.29563 ± 0.00065 BJD_TDB Wang et al. 2018 -0.0 ± 0.9
2016-01-28 2457416.02949 ± 0.00178 BJD_TDB Wang et al. 2018 1.0 ± 2.6
2016-01-17 2457405.06961 ± 0.00125 BJD_TDB Wang et al. 2018 -1.1 ± 1.8
2015-02-04 2457058.05061 ± 0.00119 BJD_TDB Wang et al. 2018 -3.2 ± 1.7
2013-11-30 2456627.02128 ± 0.00058 BJD_TDB Wang et al. 2018 1.1 ± 0.8
2013-11-19 2456616.06236 ± 0.00106 BJD_TDB Wang et al. 2018 0.4 ± 1.5
2013-11-04 2456601.45096 ± 0.00097 BJD_TDB Mallonn et al. 2019 0.2 ± 1.4
2013-10-17 2456583.18773 ± 0.00105 BJD_TDB Wang et al. 2018 1.5 ± 1.5
2013-09-25 2456561.26872 ± 0.00066 BJD_TDB Wang et al. 2018 -1.6 ± 1.0
2010-01-02 2455198.76949 ± 0.00037 BJD_TDB Wang et al. 2018 0.2 ± 0.5
2009-12-11 2455176.85173 ± 0.00047 BJD_TDB Quinn et al. 2012 -1.1 ± 0.7
2009-11-01 2455136.671678 ± 0.00079 BJD_TDB Wang et al. 2018 0.3 ± 1.1
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