exoclock

WASP-41b (LOW)

Discovered by: Maxted et al. 2011

The Star
Simbad
GAIA
2MASS		 CD-29 9873
DR2 6160877943251930368
J12422849-3038235
RA 12:42:28.4949 DEC -30:38:23.527
Parallax
6.092 mas		 P.M. RA
14.9 mas/y		 P.M. DEC
11.888 mas/y
MagV
11.63		 MagR
11.39		 MagI
10.78		 MagJ
10.096		 MagH
9.752		 MagK
9.677
MagG
11.282		 MagGBP
11.695		 MagGRP
10.744
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2457394.679231 ± 5.8e-05 BJDTDB
Period
3.05240178 ± 1.4e-07 days
Transit Parameters
Southworth et al. 2016
Rp/Rs
0.1365 ± 0.0006		 a/Rs
9.96 +0.08 -0.08
 i
88.7 +0.4 -0.4 deg
e
-		 ω
- deg
DepthR*
24.98 mmag		 Duration*
2.61 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Maxted et al. 2011
Teff
5450.0 +150.0 -150.0 K
 Log(g)
4.5 +0.05 -0.05 cm/s2
 Fe/H
-0.08 +0.09 -0.09 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 57 (3)
O-C -1.18 ± 0.28 minutes
ExoClock Observations (Recent) 18 (3)
Space Observations (Recent) 18 (0)
ETD Observations (Recent) 5 (0)
Literature Mid-times (Recent) 16 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.13487 ± 0.00024

WASP-41b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-41b (LOW)
2026-04-15		Hao-Yuan Duan
Lulin Observatory, Taiwan		GSO RC12
ASI 294MM Pro / I / 120.0		-0.6 ± 1.73
WASP-41b (LOW)
2026-02-25		Hao-Yuan Duan
Lulin Observatory, Taiwan		GSO RC12
ASI 294MM Pro / I / 60.0		3.33 ± 1.73
WASP-41b (LOW)
2025-05-30		Jean-Pascal Vignes
Deep Sky Chile		Planewave CDK400
QHYCCD 600M / V / 60.0		0.3 ± 0.36
WASP-41b (LOW)
2024-06-13		Danilo Della Torres
Observatório do Pico dos Dias (OPD/LNA)		Boller & Chivens
Andor iKon-L CCD / I / 10.0		-4.19 ± 0.48
WASP-41b (LOW)
2024-04-19		Nicolás Castro-Morales
Observatorio Docente UC		PUC40
SBIG-STL1001E / Clear / 30.0		0.05 ± 1.07
WASP-41b (LOW)
2024-03-01		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.6 ± 0.6
WASP-41b (LOW)
2023-05-10		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.06 ± 0.48
WASP-41b (LOW)
2023-05-07		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		-0.64 ± 0.43
WASP-41b (LOW)
2023-05-01		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		2.25 ± 0.59
WASP-41b (LOW)
2022-04-02		Jean-Pascal Vignes
Deep Sky Chile		Planewave CDK400
QHYCCD 600M / R / 60.0		-0.8 ± 0.43
WASP-41b (LOW)
2022-03-24		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.79 ± 0.86
WASP-41b (LOW)
2021-06-10		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.56 ± 0.72
WASP-41b (LOW)
2021-06-04		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.31 ± 0.43
WASP-41b (LOW)
2021-06-01		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		1.18 ± 0.58
WASP-41b (LOW)
2021-04-16		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / V / 120.0		0.93 ± 0.58
WASP-41b (LOW)
2021-04-16		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.64 ± 0.58
WASP-41b (LOW)
2021-04-13		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		-1.95 ± 0.72
WASP-41b (LOW)
2021-02-14		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.84 ± 0.58

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-41b (LOW)
2023-04-24		TESS-0.27 ± 0.37
WASP-41b (LOW)
2023-04-21		TESS0.2 ± 0.37
WASP-41b (LOW)
2023-04-18		TESS-0.51 ± 0.43
WASP-41b (LOW)
2023-04-15		TESS0.16 ± 0.46
WASP-41b (LOW)
2023-04-12		TESS0.72 ± 0.36
WASP-41b (LOW)
2023-04-09		TESS0.01 ± 0.4
WASP-41b (LOW)
2021-04-25		TESS0.27 ± 0.37
WASP-41b (LOW)
2021-04-22		TESS-0.75 ± 0.35
WASP-41b (LOW)
2021-04-19		TESS0.63 ± 0.35
WASP-41b (LOW)
2021-04-13		TESS-0.54 ± 0.39
WASP-41b (LOW)
2021-04-10		TESS-0.13 ± 0.36
WASP-41b (LOW)
2021-04-07		TESS-0.37 ± 0.36
WASP-41b (LOW)
2019-04-20		TESS-0.52 ± 0.4
WASP-41b (LOW)
2019-04-17		TESS0.56 ± 0.37
WASP-41b (LOW)
2019-04-14		TESS-0.31 ± 0.43
WASP-41b (LOW)
2019-04-05		TESS-0.66 ± 0.39
WASP-41b (LOW)
2019-04-02		TESS-0.2 ± 0.43
WASP-41b (LOW)
2019-03-30		TESS0.05 ± 0.39

ETD Observations
Planet
Observation Date		 Observer(s) ETD link O-C
minutes
WASP-41b (LOW)
2014-06-12		Phil Evans1402612279-2.01 ± 0.72
WASP-41b (LOW)
2014-04-21		Phil Evans13981136011.06 ± 0.43
WASP-41b (LOW)
2014-02-10		Martin Mašek, Kateřina Hoňková, Jakub Juryšek13920436250.68 ± 0.43
WASP-41b (LOW)
2013-05-11		TG Tan1368327129-0.24 ± 0.43
WASP-41b (LOW)
2011-06-12		TG Tan1308143390-2.1 ± 0.58

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2015-05-17 Southworth et al. 2016 0.1 ± 0.24
2015-05-14 Southworth et al. 2016 -0.62 ± 0.22
2015-05-11 Southworth et al. 2016 0.22 ± 0.13
2014-05-31 Southworth et al. 2016 -0.7 ± 0.13
2013-04-20 Southworth et al. 2016 1.94 ± 0.3
2013-04-20 Southworth et al. 2016 0.37 ± 0.1
2012-03-28 Neveu-VanMalle et al. 2016 -0.04 ± 0.14
2012-03-10 Southworth et al. 2016 -1.2 ± 0.46
2012-01-21 Southworth et al. 2016 -0.38 ± 0.3
2011-05-12 Southworth et al. 2016 -1.86 ± 1.31
2011-04-12 Southworth et al. 2016 1.05 ± 0.35
2011-04-03 Southworth et al. 2016 -0.02 ± 0.29
2011-03-22 Southworth et al. 2016 -0.5 ± 0.39
2010-05-26 Maxted et al. 2011 -1.78 ± 1.44
2008-03-24 Southworth et al. 2016 -3.99 ± 1.44
2007-04-11 Southworth et al. 2016 -2.55 ± 2.59
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