exoclock

WASP-11b (LOW)

Discovered by: West et al. 2009

The Star
Simbad
GAIA
2MASS		 WASP-11
DR2 123376685084303360
J03092855+3040249
RA 03:09:28.5427 DEC +30:40:24.868
Parallax
7.992 mas		 P.M. RA
3.856 mas/y		 P.M. DEC
-44.826 mas/y
MagV
11.57		 MagR
11.42		 MagI*
10.508		 MagJ
10.015		 MagH
9.56		 MagK
9.421
MagG
11.554		 MagGBP
12.101		 MagGRP
10.885
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2457376.590254 ± 8.5e-05 BJDTDB
Period
3.72247915 ± 1.7e-07 days
Transit Parameters
Wang et al. 2014
Rp/Rs
0.131 ± 0.0008		 a/Rs
12.3 +0.11 -0.11
 i
89.1 +0.5 -0.5 deg
e
-		 ω
- deg
DepthR*
23.79 mmag		 Duration*
2.58 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
West et al. 2009
Teff
4800.0 +100.0 -100.0 K
 Log(g)
4.45 +0.2 -0.2 cm/s2
 Fe/H
0.0 +0.2 -0.2 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 92 (8)
O-C 0.74 ± 0.18 minutes
ExoClock Observations (Recent) 68 (8)
Space Observations (Recent) 11 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 13 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.12863 ± 0.00037

WASP-11b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-11b (LOW)
2026-01-13		Snaevarr Guðmundsson
Ness Observatory		Meade LX 200 ACF Schmidt-Cassegrain
SBIG STL 11000M / R / 90.0		-1.4 ± 1.37
WASP-11b (LOW)
2025-12-18		Mark van der Grijp
Raspay Observatory		C9.25 HD
ZWO2600 MM Pro / Lum / 60.0		1.83 ± 1.12
WASP-11b (LOW)
2025-12-18		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / R / 60.0		-2.38 ± 0.81
WASP-11b (LOW)
2025-11-22		Vojtěch Školník
Hvězdárna v Úpici		SW N200/800
MI C2-7000A / Clear / 90.0		-0.21 ± 2.74
WASP-11b (LOW)
2025-11-19		Tommaso Dittadi
TD-TRO		Ritchey-Chretien
Moravian G2-1600 / R / 90.0		1.13 ± 0.81
WASP-11b (LOW)
2025-11-04		Matthew Garrrod
Moeller		PlaneWave 1000
ASI2600MM Pro / V / 15.0		1.31 ± 0.26
WASP-11b (LOW)
2025-09-27		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 90.0		0.46 ± 1.24
WASP-11b (LOW)
2025-08-17		Wilfried Hartmann
Observatory Stargate, Austria		Skywatcher 8" f/4
QHY MiniCam8 Mono / R / 44.0		2.75 ± 1.58
WASP-11b (LOW)
2025-01-17		Ulisse Quadri
Bassano Bresciano Obs.		Telescopio 250 mm
CCD Starlight Xpress Trius / R / 120.0		2.08 ± 1.4
WASP-11b (LOW)
2025-01-17		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		-0.11 ± 0.58
WASP-11b (LOW)
2024-12-07		Ramon Naves
Montcabrer		Meade LX200 12" ACF
Moravian G4-9000 / rpr / 120.0		3.07 ± 0.71
WASP-11b (LOW)
2024-11-26		Alexey Garmash
Lyceum 130		SW Esprit 150ED
ASI1600MM / R / 180.0		-0.53 ± 0.78
WASP-11b (LOW)
2024-11-22		Mark Salisbury
POST		Orion Optics ODK
SBIG ST-10 XME / R / 240.0		-0.55 ± 0.62
WASP-11b (LOW)
2024-11-22		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / V / 180.0		-0.78 ± 1.02
WASP-11b (LOW)
2024-09-02		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-4.82 ± 3.6
WASP-11b (LOW)
2024-02-02		Alberto García Sánchez
Rio Cofio		MEADE LX200 Classic
SBIG ST8-XME / Clear / 120.0		-0.2 ± 1.22
WASP-11b (LOW)
2024-01-11		Lee YuHsien
KMSH Observatory		C14HD
QSI-660 / Clear / 30.0		3.91 ± 1.4
WASP-11b (LOW)
2023-11-16		Vikrant Kumar Agnihotri
Cepheid Observatory India		C11/f5.5 Schmidt-Cassegrain
Atik383L+ mono / Clear / 120.0		0.94 ± 1.32
WASP-11b (LOW)
2023-10-17		Vojtěch Školník
Broumov NM Observatory		Meade LX90 ACF
MI C2-7000A / Clear / 90.0		0.04 ± 0.98
WASP-11b (LOW)
2023-10-17		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280/1850 (C11 with Starizona reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		-0.36 ± 0.49
WASP-11b (LOW)
2023-10-03		Juanjo Herrera
Cubas		Losmandy g11-Celestron C9,25
QHY9S / Lum / 60.0		-0.65 ± 0.85
WASP-11b (LOW)
2023-08-23		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 240.0		-4.54 ± 1.73
WASP-11b (LOW)
2023-03-04		Rafa Barbera
Rafa Barberá		TS OPTICS PHOTON
ASI 533 MC PRO / Clear / 133.0		3.01 ± 4.61
WASP-11b (LOW)
2023-03-04		Ricard Casas
Estartit Obs.		Schmidt-Cassegrain
Moravian Instruments C2-5000A / R / 30.0		1.28 ± 2.74
WASP-11b (LOW)
2023-02-06		Stéphane Montchaud
Burgundy Observatory		Celestron 8
Zwo Asi 1600 / Lum / 120.0		1.57 ± 1.43
WASP-11b (LOW)
2023-01-11		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-4.62 ± 2.74
WASP-11b (LOW)
2022-12-27		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 90.0		0.23 ± 0.46
WASP-11b (LOW)
2022-12-12		Mark Salisbury
POST		Orion Optics ODK
SBIG ST-10 XME / R / 240.0		0.13 ± 0.55
WASP-11b (LOW)
2022-12-12		Pieter Vuylsteke
TheGardenToTheSkyFacility		TS ONTC 25cm f4.7
QHY 268M / rpr / 60.0		-0.59 ± 0.79
WASP-11b (LOW)
2022-12-01		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 90.0		0.76 ± 0.66
WASP-11b (LOW)
2022-12-01		Martin Mifsud
Manikata Observatory		Meade OTA
SBig ST10XME / V / 300.0		-1.92 ± 2.16
WASP-11b (LOW)
2022-11-24		Sauro Gaudenzi
MicroObservatory Cecilia		MicroObservatory robotic telescope
KAF-1402ME / Clear / 60.0		1.19 ± 2.88
WASP-11b (LOW)
2022-11-16		Jean-Claude MARIO
Observatoire de la Cabergue		T 500 Cassegrain "Arp 83"
ASI 6200 MM / Lum / 120.0		-2.44 ± 0.76
WASP-11b (LOW)
2022-11-13		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-1.21 ± 2.16
WASP-11b (LOW)
2022-11-02		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		-2.1 ± 0.58
WASP-11b (LOW)
2022-10-29		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-2.36 ± 1.21
WASP-11b (LOW)
2022-10-06		Patrick Wagner
Terasse		Evoguide 50 ED
ZWO ASI 178MC / Lum / 60.0		9.0 ± 3.89
WASP-11b (LOW)
2022-10-06		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 90.0		0.21 ± 0.72
WASP-11b (LOW)
2022-09-22		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 240.0		0.43 ± 0.73
WASP-11b (LOW)
2022-01-26		Mario Morales-Aimar
Observatorio de Sencelles MPC K14		Reflector 10"
SBIG ST7-XME / Clear / 40.0		-8.55 ± 0.68
WASP-11b (LOW)
2021-12-31		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 60.0		0.85 ± 0.43
WASP-11b (LOW)
2021-12-02		Aziz Ettahar Kaeouach
High Atlas Observatory		Celestron C11 hd
Zwo asi 294 mm pro / R / 60.0		-0.11 ± 1.44
WASP-11b (LOW)
2021-11-28		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		0.15 ± 2.02
WASP-11b (LOW)
2021-11-20		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 90.0		2.82 ± 2.88
WASP-11b (LOW)
2021-11-20		Dominique DANIEL
La Montjoie		Celestron CGX C8 XLT
Camera CMOS ZWO ASI294MC pro (color) / Clear / 90.0		-6.25 ± 2.74
WASP-11b (LOW)
2021-11-13		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		0.17 ± 3.17
WASP-11b (LOW)
2021-11-05		Robert Roth
TURMX Observatory		Planewave CDK17
QHY600M / rpr / 60.0		0.74 ± 0.35
WASP-11b (LOW)
2021-11-05		Giorgio Baj
M57		Ritchey-Chretien
Sbig STT1603 ME / Clear / 180.0		0.25 ± 0.86
WASP-11b (LOW)
2021-11-05		Giovanni Battista Casalnuovo
FSO Filzi School Observatory		RC14" f/8
QHY9 / Clear / 30.0		-0.9 ± 0.72
WASP-11b (LOW)
2021-09-07		Jean-Pascal Vignes
Newskies Mexico		T11 New Mexico
FLI / R / 120.0		3.23 ± 5.33
WASP-11b (LOW)
2021-02-25		Fabio Mortari
Hypatia Observatory		Ritchey Chretienne 250mm f/5.3
Sbig ST8-XE / R / 200.0		0.23 ± 2.3
WASP-11b (LOW)
2020-12-31		Martin Smith
Heathwood Road		Celestron EdgeHD 800
Atik 414 ex / R / 90.0		0.93 ± 1.01
WASP-11b (LOW)
2020-11-21		Leon Bewersdorff
Observatory Kipshoven (BLEW)		20cm Celestron SE
QHY600M PH / V / 30.0		-1.7 ± 1.15
WASP-11b (LOW)
2020-11-06		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		-1.68 ± 0.72
WASP-11b (LOW)
2020-09-15		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 60.0		1.36 ± 0.86
WASP-11b (LOW)
2020-09-15		Simon Dawes
William James II Observatory		Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / R / 120.0		-1.09 ± 1.01
WASP-11b (LOW)
2020-09-11		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		2.33 ± 0.72
WASP-11b (LOW)
2020-08-19		Krzysztof Bernacki
Observatory Pyskowice		RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 60.0		-2.02 ± 3.6
WASP-11b (LOW)
2020-08-19		Iakovos Strikis
Elizabeth Observatory of Athens		Sky Watcher Quattro
SBIG STF-8300mm / R / 60.0		-2.89 ± 1.73
WASP-11b (LOW)
2019-12-18		Martin Fowler
MicroObservatory Cecilia		MicroObservatory robotic telescope
KAF 1402ME / Clear / 60.0		2.76 ± 4.32
WASP-11b (LOW)
2019-12-10		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		-2.05 ± 1.3
WASP-11b (LOW)
2018-12-14		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		0.66 ± 0.43
WASP-11b (LOW)
2018-12-14		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / V / 120.0		0.37 ± 0.86
WASP-11b (LOW)
2018-09-08		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		2.61 ± 1.58
WASP-11b (LOW)
2016-09-27		Marc Deldem
Les Barres Observatory		Celestron C8
SBIG ST8-XME / Clear / 120.0		4.22 ± 1.3
WASP-11b (LOW)
2015-01-07		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / V / 60.0		0.44 ± 0.86
WASP-11b (LOW)
2012-12-31		Claudio Lopresti
Claudio Lopresti		Meade LX200 12"
CCD Sbig ST9xe / R / 180.0		0.55 ± 1.01
WASP-11b (LOW)
2010-11-26		Ramon Naves
Montcabrer		Meade LX200 12" ACF
Sbig ST8xme / Clear / 100.0		2.54 ± 0.56

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-11b (LOW)
2022-11-24		TESS0.65 ± 0.52
WASP-11b (LOW)
2022-11-20		TESS0.26 ± 0.46
WASP-11b (LOW)
2022-11-16		TESS0.67 ± 0.5
WASP-11b (LOW)
2022-11-13		TESS1.28 ± 0.49
WASP-11b (LOW)
2022-11-09		TESS0.78 ± 0.46
WASP-11b (LOW)
2022-11-05		TESS1.01 ± 0.53
WASP-11b (LOW)
2022-11-02		TESS0.39 ± 0.46
WASP-11b (LOW)
2021-09-11		TESS0.49 ± 0.48
WASP-11b (LOW)
2021-09-07		TESS0.46 ± 0.43
WASP-11b (LOW)
2021-08-27		TESS0.13 ± 0.5
WASP-11b (LOW)
2021-08-23		TESS-1.04 ± 0.5

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2014-10-03 Mancini et al. 2015 -0.02 ± 0.26
2014-10-03 Mancini et al. 2015 -0.28 ± 0.12
2011-10-30 Wang et al. 2014 -2.49 ± 2.39
2011-10-08 Sada et al. 2012 0.97 ± 0.63
2011-10-08 Sada et al. 2012 0.53 ± 0.3
2010-11-07 Sada et al. 2012 -2.2 ± 0.6
2009-11-26 Sada et al. 2012 0.19 ± 0.3
2009-11-15 Mancini et al. 2015 -1.59 ± 1.5
2009-11-07 Wang et al. 2014 0.96 ± 0.66
2008-12-07 Wang et al. 2014 0.22 ± 0.17
2008-11-22 Wang et al. 2014 2.38 ± 1.09
2008-09-20 Mancini et al. 2015 -0.54 ± 0.29
2008-01-07 West et al. 2009 0.12 ± 0.29
© 2019-2025 ExoClock Project - Privacy policy - Contact: exoclockproject@gmail.com
The ExoClock Project is managed by the PULSAR Non-profit Civil Law Company / Address: Pipsou 18A, 54627 Thessaloniki, Greece / VAT: EL996400186 / Tax Office: E Thessaloniki