exoclock

HAT-P-31b (HIGH)

Discovered by: Kipping et al. 2011

The Star
Simbad
GAIA
2MASS
HAT-P-31
DR2 4583004815239650176
J18060904+2625359
RA 18:06:09.0499 DEC +26:25:35.989
Parallax
2.878 mas
P.M. RA
-7.437 mas/y
P.M. DEC
-13.402 mas/y
MagV
11.67
MagR
11.49
MagI*
10.974
MagJ
10.423
MagH
10.128
MagK
10.083
MagG
11.45
MagGBP
11.782
MagGRP
10.975
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2458940.75332 ± 0.00034 BJDTDB
Period
5.0052702 ± 3.1e-06 days

Transit Parameters
Kipping et al. 2011
Rp/Rs
0.08 ± 0.022
a/Rs**
9.34 +0.15 -0.15
i
87.1 +1.8 -2.7 deg
e
0.245 +0.004 -0.004
ω
274.3 +1.8 -1.8 deg
DepthR*
7.67 mmag
Duration*
4.77 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Kipping et al. 2011
Teff
6065.0 +100.0 -100.0 K
Log(g)
4.26 +0.18 -0.18 cm/s2
Fe/H
0.15 +0.08 -0.08 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 7.6"
Total Observations (Recent) 22 (2)
O-C -1.39 ± 2.17 minutes
ExoClock Observations (Recent) 4 (2)
Space Observations (Recent) 11 (0)
ETD Observations (Recent) 3 (0)
Literature Mid-times (Recent) 4 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.08507 ± 0.00051

HAT-P-31b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
HAT-P-31b (HIGH)
2024-07-30
Nello Ruocco
Osservatorio Astronomico Nastro Verde di Sorrento MPC code C82
SC Meade LX200 GPS on equatorial fork
Sbig ST10XME / Clear / 120.0
-1.88 ± 2.3
HAT-P-31b (HIGH)
2024-07-25
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0
2.69 ± 6.62
HAT-P-31b (HIGH)
2022-05-17
David Arnot
OSO PIRATE
PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 45.0
3.02 ± 1.3
HAT-P-31b (HIGH)
2019-07-10
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / R / 120.0
2.16 ± 2.3

Space Observations

Planet
Observation Date
Mission O-C
minutes
HAT-P-31b (HIGH)
2021-07-20
TESS0.74 ± 1.73
HAT-P-31b (HIGH)
2021-07-15
TESS-2.19 ± 1.87
HAT-P-31b (HIGH)
2021-07-10
TESS-3.96 ± 1.73
HAT-P-31b (HIGH)
2021-07-05
TESS3.63 ± 1.73
HAT-P-31b (HIGH)
2021-06-30
TESS-0.59 ± 2.02
HAT-P-31b (HIGH)
2021-06-25
TESS-1.21 ± 1.73
HAT-P-31b (HIGH)
2020-06-30
TESS2.04 ± 2.02
HAT-P-31b (HIGH)
2020-06-25
TESS-1.46 ± 2.02
HAT-P-31b (HIGH)
2020-06-20
TESS0.66 ± 1.73
HAT-P-31b (HIGH)
2020-06-15
TESS2.2 ± 2.16
HAT-P-31b (HIGH)
2020-06-10
TESS0.28 ± 1.87

ETD Observations

Planet
Observation Date
Observer(s) ETD link O-C
minutes
HAT-P-31b (HIGH)
2019-05-31
Yves Jongen15593732735.99 ± 4.32
HAT-P-31b (HIGH)
2018-08-14
Wonseok Kang1535340114-1.82 ± 2.59
HAT-P-31b (HIGH)
2018-07-20
Wonseok Kang1533433298-0.31 ± 1.15

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2018-08-04 Mallonn et al. 2019 3.84 ± 3.07
2018-07-30 Mallonn et al. 2019 -4.4 ± 4.9
2018-07-20 Mallonn et al. 2019 -1.07 ± 1.89
2007-08-08 Kipping et al. 2011 -3.35 ± 7.34
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