exoclock

TOI-1431b (LOW)

Discovered by: Addison et al. 2021

The Star
Simbad
GAIA
2MASS		 HD 201033
DR2 2188906825165621120
J21044887+5535166
RA 21:04:48.8646 DEC +55:35:16.509
Parallax
6.686 mas		 P.M. RA
11.737 mas/y		 P.M. DEC
23.869 mas/y
MagV
8.02		 MagR*
7.861		 MagI*
7.707		 MagJ
7.541		 MagH
7.452		 MagK
7.439
MagG
7.976		 MagGBP
8.123		 MagGRP
7.772
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459558.098917 ± 6.8e-05 BJDTDB
Period
2.65023153 ± 3.8e-07 days
Transit Parameters
Addison et al. 2021
Rp/Rs
0.07955 ± 0.00063		 a/Rs
5.15 +0.05 -0.05
 i
80.13 +0.13 -0.13 deg
e
0.0022 +0.003 -0.0016
 ω
108.0 +92.0 -31.0 deg
DepthR*
6.16 mmag		 Duration*
2.49 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Addison et al. 2021
Teff
7690.0 +400.0 -250.0 K
 Log(g)
4.15 +0.04 -0.04 cm/s2
 Fe/H
0.09 +0.03 -0.03 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.46"
Total Observations (Recent) 56 (4)
O-C 2.02 ± 0.82 minutes
ExoClock Observations (Recent) 18 (4)
Space Observations (Recent) 38 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 0 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.078961 ± 9.6e-05

TOI-1431b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
TOI-1431b (LOW)
2025-11-30		Ivo Silvestri
Trevinca Skies		Skywatcher Newton 250pds
ASI2600MM Duo / rpr / 10.0		2.89 ± 5.9
TOI-1431b (LOW)
2025-08-16		Xavier Otazu
Observatori Astronomic Lo Olivaret		Celestron C11
CMOS Moravian C3-61000 PRO / R / 7.0		-3.79 ± 2.3
TOI-1431b (LOW)
2025-08-08		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / rpr / 120.0		1.67 ± 3.31
TOI-1431b (LOW)
2025-08-08		Giovanni Calapai
Home Astronomical Observatory		Celestron 11 Schmidt-Cassegrain
Atik 314L+ / Clear / 90.0		-0.63 ± 2.16
TOI-1431b (LOW)
2024-09-24		Gustavo Muler
Obs. Nazaret J47		lx 200
ST8 XME AO8 / R / 40.0		2.8 ± 1.58
TOI-1431b (LOW)
2024-07-25		Giovanni Calapai
Home Astronomical Observatory		Celestron 11 Schmidt-Cassegrain
Atik 314L+ / Clear / 90.0		-1.92 ± 3.6
TOI-1431b (LOW)
2024-07-18		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 20.0		7.0 ± 4.32
TOI-1431b (LOW)
2024-07-18		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / R / 46.0		5.85 ± 2.74
TOI-1431b (LOW)
2024-05-12		Alexey Garmash
Lyceum 130		EdgeHD C11
ASI2600MM pro / rpr / 40.0		5.11 ± 1.87
TOI-1431b (LOW)
2023-09-27		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Player One Astronomy Poseidon-M Pro (IMX571) / R / 10.0		-5.09 ± 3.74
TOI-1431b (LOW)
2023-09-11		Giovanni Calapai
Home Astronomical Observatory		Celestron 11 Schmidt-Cassegrain
Atik 314L+ / Clear / 80.0		10.44 ± 1.87
TOI-1431b (LOW)
2022-11-05		Marco Bastoni
Bellatrix		GSO RC 10''
Moravian G3-16200 / Lum / 120.0		-6.28 ± 4.03
TOI-1431b (LOW)
2022-08-13		Raphael Nicollerat
Observatoire des Valentines K17		Ritchey Chretien
Moravian C3-26000 PRO / Lum / 15.0		-2.95 ± 2.59
TOI-1431b (LOW)
2022-07-06		Mauro Caló
Cavallino		RC
SBIG ST10 / Lum / 40.0		-4.62 ± 4.32
TOI-1431b (LOW)
2022-06-29		Mercedes Correa
Sirius B		Meade
Moravian G2 1600 / R / 50.0		8.48 ± 3.6
TOI-1431b (LOW)
2022-06-29		David Quiles
David Quiles Obs.		Celestron EDGEHD 800
ZWO ASI 2600 MM / R / 90.0		-2.61 ± 2.45
TOI-1431b (LOW)
2021-12-06		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / I / 30.0		-1.56 ± 5.47
TOI-1431b (LOW)
2021-11-07		Fran Campos
Puig d'Agulles Observtory		SC12" on EQ8 German mount
SBIG ST-8XME / R / 250.0		2.97 ± 1.87

Space Observations
Planet
Observation Date		 Mission O-C
minutes
TOI-1431b (LOW)
2022-10-28		TESS0.11 ± 0.45
TOI-1431b (LOW)
2022-10-26		TESS-0.03 ± 0.45
TOI-1431b (LOW)
2022-10-23		TESS0.17 ± 0.39
TOI-1431b (LOW)
2022-10-20		TESS-0.13 ± 0.46
TOI-1431b (LOW)
2022-10-18		TESS0.38 ± 0.46
TOI-1431b (LOW)
2022-10-15		TESS-0.21 ± 0.4
TOI-1431b (LOW)
2022-10-10		TESS0.38 ± 0.4
TOI-1431b (LOW)
2022-10-07		TESS-0.15 ± 0.43
TOI-1431b (LOW)
2022-10-05		TESS-0.27 ± 0.39
TOI-1431b (LOW)
2022-10-02		TESS-0.53 ± 0.39
TOI-1431b (LOW)
2022-09-27		TESS-0.08 ± 0.45
TOI-1431b (LOW)
2022-09-24		TESS-0.77 ± 0.4
TOI-1431b (LOW)
2022-09-21		TESS-0.8 ± 0.4
TOI-1431b (LOW)
2022-09-19		TESS0.23 ± 0.42
TOI-1431b (LOW)
2022-09-13		TESS0.19 ± 0.43
TOI-1431b (LOW)
2022-09-11		TESS-0.38 ± 0.46
TOI-1431b (LOW)
2022-09-08		TESS0.63 ± 0.49
TOI-1431b (LOW)
2022-09-05		TESS0.15 ± 0.4
TOI-1431b (LOW)
2022-09-03		TESS0.31 ± 0.45
TOI-1431b (LOW)
2022-08-31		TESS-0.33 ± 0.45
TOI-1431b (LOW)
2022-08-28		TESS-0.44 ± 0.39
TOI-1431b (LOW)
2022-08-26		TESS0.08 ± 0.42
TOI-1431b (LOW)
2022-08-23		TESS0.42 ± 0.39
TOI-1431b (LOW)
2022-08-21		TESS0.4 ± 0.45
TOI-1431b (LOW)
2022-08-15		TESS0.5 ± 0.46
TOI-1431b (LOW)
2022-08-13		TESS0.69 ± 0.43
TOI-1431b (LOW)
2022-08-10		TESS-0.52 ± 0.39
TOI-1431b (LOW)
2022-08-07		TESS0.06 ± 0.39
TOI-1431b (LOW)
2019-10-03		TESS0.13 ± 0.39
TOI-1431b (LOW)
2019-10-01		TESS-0.57 ± 0.43
TOI-1431b (LOW)
2019-09-28		TESS0.25 ± 0.46
TOI-1431b (LOW)
2019-09-25		TESS-0.67 ± 0.46
TOI-1431b (LOW)
2019-09-20		TESS0.45 ± 0.43
TOI-1431b (LOW)
2019-09-17		TESS1.95 ± 0.55
TOI-1431b (LOW)
2019-09-15		TESS-0.05 ± 0.39
TOI-1431b (LOW)
2019-09-07		TESS-0.59 ± 0.37
TOI-1431b (LOW)
2019-08-25		TESS-0.6 ± 0.45
TOI-1431b (LOW)
2019-08-22		TESS0.34 ± 0.42
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