exoclock

HAT-P-31b

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 - Not verified False
Mallonn et al. 2019
Mid-time
2458169.941 ± 0.0017 BJDTDB
Period
5.005272 ± 6e-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 to produce a duration that matches the 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
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		MEDIUM
2 (1)

0

3.1±1.1

HAT-P-31b


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
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		 3.2 ± 1.3
2019-07-10 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / R / 120.0		 2.9 ± 2.3
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