exoclock

WASP-2b (LOW)

Discovered by: Collier Cameron et al. 2007

The Star
Simbad
GAIA
2MASS		 WASP-2
DR2 1748596020745038208
J20305413+0625463
RA 20:30:54.1279 DEC +06:25:46.338
Parallax
6.498 mas		 P.M. RA
5.936 mas/y		 P.M. DEC
-48.279 mas/y
MagV
11.98		 MagR*
11.308		 MagI*
11.024		 MagJ
10.166		 MagH
9.752		 MagK
9.632
MagG
11.564		 MagGBP
12.047		 MagGRP
10.946
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2455573.398556 ± 6.7e-05 BJDTDB
Period
2.152221956 ± 8e-08 days
Transit Parameters
Southworth et al. 2010
Rp/Rs
0.1326 ± 0.0007		 a/Rs
8.08 +0.12 -0.12
 i
84.81 +0.17 -0.17 deg
e
-		 ω
- deg
DepthR*
19.49 mmag		 Duration*
1.77 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Torres et al. 2008
Teff
5200.0 +200.0 -200.0 K
 Log(g)
4.54 +0.04 -0.05 cm/s2
 Fe/H
0.1 +0.2 -0.2 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 124 (16)
O-C 1.09 ± 0.15 minutes
ExoClock Observations (Recent) 104 (16)
Space Observations (Recent) 5 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 15 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.13121 ± 0.0008

WASP-2b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-2b (LOW)
2025-11-21		Trevor Gainey
Kismet		Meade LX200
ZWO ASI 294 MC Pro / R / 50.0		0.58 ± 1.08
WASP-2b (LOW)
2025-10-11		Pieter Vuylsteke
Marvel (La Palma)		ASA Ritchey
ZWO 6200mm / rpr / 60.0		3.7 ± 0.37
WASP-2b (LOW)
2025-09-28		Pieter Vuylsteke
Marvel (La Palma)		ASA Ritchey
ZWO 6200mm / rpr / 60.0		1.94 ± 0.39
WASP-2b (LOW)
2025-09-16		Jean-Pascal Vignes
Deep Sky Chile		Planewave CDK400
QHYCCD 600M / R / 60.0		5.88 ± 0.5
WASP-2b (LOW)
2025-08-16		John Collins
JC_Wrexham		Meade LX200GPS
ASI-290m / rpr / 60.0		-0.48 ± 1.15
WASP-2b (LOW)
2025-08-16		Mark Salisbury
POST		Orion Optics ODK
SBIG ST-10 XME / R / 240.0		-0.84 ± 0.75
WASP-2b (LOW)
2025-08-16		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / Clear / 203.0		-1.04 ± 1.32
WASP-2b (LOW)
2025-08-16		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 180.0		-4.09 ± 1.44
WASP-2b (LOW)
2025-08-01		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / R / 240.0		-1.06 ± 0.72
WASP-2b (LOW)
2025-07-22		Arushi Nath
Arushi Nath		12" Ritchey- Chretien Pro
ASI 2600 Mono Camera / R / 180.0		-1.22 ± 1.09
WASP-2b (LOW)
2025-07-19		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / R / 60.0		1.84 ± 0.92
WASP-2b (LOW)
2025-07-19		Moises Portillo
Elguin		GSO
Omegon vetec16000c / AstrodonExoPlanet-BB / 90.0		-2.53 ± 3.31
WASP-2b (LOW)
2025-07-19		Arushi Nath
Arushi Nath		12" Ritchey- Chretien Pro
ASI 2600 Mono Camera / R / 180.0		-2.86 ± 0.95
WASP-2b (LOW)
2025-07-15		Hao-Yuan Duan
Lulin Observatory, Taiwan		GSO RC12
ASI 294MM Pro / I / 10.0		-4.62 ± 1.73
WASP-2b (LOW)
2025-07-04		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / R / 180.0		0.29 ± 2.3
WASP-2b (LOW)
2025-06-21		Vojtěch Školník
Broumov NM Observatory		Meade LX90 ACF
MI C2-7000A / Clear / 90.0		3.02 ± 1.11
WASP-2b (LOW)
2024-09-10		Rodrigo Castillo
Rodrigo-Moro		Meade ACF-SC 10
Atik 383L+ Mono / Clear / 60.0		2.34 ± 2.02
WASP-2b (LOW)
2024-08-28		Riccardo Zancan
Riccardo		Celestron C11
ASI-1600-MM / R / 90.0		-1.21 ± 1.58
WASP-2b (LOW)
2024-08-28		Martin Krugmeister
Martin Krugmeister		2000/1000 8
tbd / Clear / 30.0		-2.07 ± 2.74
WASP-2b (LOW)
2024-08-13		Riccardo Zancan
Riccardo		Celestron C11
ASI-1600-MM / Clear / 90.0		1.03 ± 1.58
WASP-2b (LOW)
2024-08-13		Tiberiu Savin
Tiberiu Savin		Skywatcher 200 Quattro
ZWO ASI 533MM / Clear / 30.0		-0.9 ± 1.4
WASP-2b (LOW)
2024-08-13		Stefano Lora
MarSEC		Ritchey Chrétien
Moravian G2 Mark II / R / 120.0		-3.6 ± 1.43
WASP-2b (LOW)
2024-08-13		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-7.18 ± 2.16
WASP-2b (LOW)
2024-08-09		Yen-Hsing Lin
NTHU Observatory		Showa 10"
ASI6200MM Pro / Lum / 60.0		-0.29 ± 0.95
WASP-2b (LOW)
2024-08-01		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 180.0		1.95 ± 0.94
WASP-2b (LOW)
2024-08-01		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / I / 60.0		-1.09 ± 1.73
WASP-2b (LOW)
2024-08-01		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / R / 60.0		-1.36 ± 1.3
WASP-2b (LOW)
2024-08-01		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / V / 60.0		-3.43 ± 1.28
WASP-2b (LOW)
2024-07-29		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 45.0		0.53 ± 2.45
WASP-2b (LOW)
2024-07-16		Ivo Peretto
MarSEC Marana Space Explorer Center		R-C
Moravia G2-1600 MkII / R / 120.0		-4.03 ± 2.16
WASP-2b (LOW)
2024-07-14		Alexey Garmash
Lyceum 130		EdgeHD C11
ASI2600MM pro / rpr / 180.0		-0.98 ± 0.65
WASP-2b (LOW)
2024-07-06		Joaquin M. Ruiz-Luque
Asociación Argentina "Amigos de la Astronomía"		Sky-Watcher
Starlight Xpress Trius SX-814 / Clear / 30.0		0.86 ± 1.12
WASP-2b (LOW)
2024-07-04		Esteban Reina
Observatori de Masquefa		Meade LX200
ZWO ASI 294 MM Pro / R / 120.0		1.48 ± 1.58
WASP-2b (LOW)
2024-07-04		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 180.0		0.65 ± 0.96
WASP-2b (LOW)
2024-07-04		Deborah Smith
El Olivar, Gergal, Spain		William Optics GT81
QHY9 / R / 130.0		0.62 ± 3.89
WASP-2b (LOW)
2024-06-06		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-0.58 ± 1.22
WASP-2b (LOW)
2024-05-24		Paul Dooley
Observatorio del Teide		PlaneWave CDK24
FLI ProLine KAF-16803 / R / 65.0		-0.31 ± 0.52
WASP-2b (LOW)
2023-11-03		Stefano Lora
MarSEC		Ritchey Chrétien
Moravian G2 Mark II / R / 90.0		0.51 ± 1.05
WASP-2b (LOW)
2023-10-30		Yen-Hsing Lin
NTHU TAT		GSO RC10
Apogee AltaF-6: KAF1001E / Clear / 30.0		-1.36 ± 1.15
WASP-2b (LOW)
2023-10-06		Dominique DANIEL
La Montjoie		T250 Skyvision
Camera CMOS ZWO ASI2600MC pro (color) / Clear / 90.0		0.72 ± 1.44
WASP-2b (LOW)
2023-09-23		Michael Irzyk
melun		C14
altair 2600 / AstrodonExoPlanet-BB / 40.0		-0.71 ± 0.73
WASP-2b (LOW)
2023-09-08		Claudio Lopresti
Claudio Lopresti		Meade LX200 12"
CCD Sbig ST9xe / I / 180.0		0.98 ± 0.69
WASP-2b (LOW)
2023-09-08		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-1.03 ± 1.58
WASP-2b (LOW)
2023-09-08		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Player One Astronomy Poseidon-M Pro (IMX571) / R / 40.0		-1.16 ± 1.25
WASP-2b (LOW)
2023-08-29		Jean-Pascal Vignes
Deep Sky Chile		PlaneWave CDK 17"
QHYCCD 600 M / R / 60.0		-2.4 ± 0.98
WASP-2b (LOW)
2023-08-11		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / R / 240.0		-0.94 ± 1.04
WASP-2b (LOW)
2023-08-11		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Clear / 180.0		-1.07 ± 0.96
WASP-2b (LOW)
2023-07-29		Tobias Gesser
TURMX Observatory		CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 60.0		-0.65 ± 0.81
WASP-2b (LOW)
2023-07-01		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 52.0		1.27 ± 1.58
WASP-2b (LOW)
2023-07-01		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 90.0		0.7 ± 1.44
WASP-2b (LOW)
2022-10-31		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-0.15 ± 1.17
WASP-2b (LOW)
2022-10-31		Adam Popowicz
Observatory Pyskowice		RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 120.0		-4.66 ± 1.87
WASP-2b (LOW)
2022-10-18		Sacha Foschino
Observatoire des Baronnies Provençales		Planewave 430mm
SVO ASI 6200 MM Pro / Clear / 120.0		3.84 ± 0.81
WASP-2b (LOW)
2022-10-18		Guillaume Biesse
MOOL - Micro Ob' of LYON		Astro Professional ED 102/712
Moravian G2-4000 / Clear / 66.0		-3.46 ± 3.02
WASP-2b (LOW)
2022-09-20		Bruno Guillet
GBRC		evscope
Sony IMX224 / Clear / 119.09991		-5.93 ± 4.46
WASP-2b (LOW)
2022-09-05		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 90.0		-0.67 ± 1.15
WASP-2b (LOW)
2022-08-28		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		1.04 ± 2.88
WASP-2b (LOW)
2022-08-23		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 180.0		-0.74 ± 0.96
WASP-2b (LOW)
2022-08-02		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-3.18 ± 2.16
WASP-2b (LOW)
2022-07-22		Sheng-Ting Huang
清境觀星園		Astro-Physics 900GTO
ASI6200MM Pro / Lum / 60.0		-2.45 ± 0.69
WASP-2b (LOW)
2022-07-14		Enrique Arce
Vallbona Observatory		Newton 10" f4
ZWO ASI 294 MM PRO / Lum / 120.0		-0.16 ± 1.58
WASP-2b (LOW)
2022-07-11		Bernhard Wenzel
Vienna		Newton A=30 cm / F=1,2 m
DSLR Canon 200 D - 14 Bit / Lum / 100.0		-2.15 ± 2.45
WASP-2b (LOW)
2022-06-28		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 120.0		-1.82 ± 0.58
WASP-2b (LOW)
2022-06-16		Martin Mifsud
Manikata Observatory		Meade OTA
SBig ST10XME / Clear / 120.0		3.13 ± 1.73
WASP-2b (LOW)
2021-10-28		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 30.0		-0.26 ± 0.86
WASP-2b (LOW)
2021-10-15		Andras Dan
Rocca1		Celestron C8
QHY 183 M / Clear / 60.0		-0.64 ± 1.15
WASP-2b (LOW)
2021-10-15		Claudio Lopresti
Claudio Lopresti		Meade LX200 12"
CCD Sbig ST9xe / R / 120.0		-2.95 ± 1.3
WASP-2b (LOW)
2021-10-07		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-1.38 ± 4.32
WASP-2b (LOW)
2021-09-22		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-0.87 ± 3.17
WASP-2b (LOW)
2021-09-17		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / R / 120.0		1.06 ± 0.43
WASP-2b (LOW)
2021-09-17		Didier Walliang
T50 Astroqueyras		T50 AQ
Apogee U16M / Lum / 20.0		-2.11 ± 1.3
WASP-2b (LOW)
2021-09-04		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Clear / 90.0		-2.92 ± 1.15
WASP-2b (LOW)
2021-08-20		Ivo Peretto
MarSEC Marana Space Explorer Center		R-C
Moravia G2-1600 MkII / Clear / 60.0		0.32 ± 1.01
WASP-2b (LOW)
2021-08-07		Jean-Baptiste Marquette
MrKite47		Newton Sky-Watcher 200/1000
ZWO ASI183MM Pro / R / 180.0		-0.78 ± 1.01
WASP-2b (LOW)
2021-07-23		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		-2.29 ± 0.72
WASP-2b (LOW)
2021-07-11		Bernhard Wenzel
Vienna		Newton A=20 cm / F=0,9 m
DSLR Canon 200 D - 14 Bit / Lum / 60.0		3.08 ± 5.76
WASP-2b (LOW)
2021-06-25		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Clear / 60.0		-0.44 ± 2.3
WASP-2b (LOW)
2021-06-13		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		2.92 ± 1.01
WASP-2b (LOW)
2021-06-13		Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / gpr / 60.0		2.05 ± 1.87
WASP-2b (LOW)
2021-06-13		Carmelo Falco
GAL Hassin Robotic Telescope 2 (GRT2) - Multiband		Giacometti-Fogale RC16 - 2
Andor Apogee Aspen CG16M / R / 60.0		0.18 ± 1.73
WASP-2b (LOW)
2021-06-04		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-2.43 ± 2.16
WASP-2b (LOW)
2020-11-09		Ferran Grau Horta
Ca L'Ou		Meade ACF 16''
FLI Proline PL1001 / R / 110.0		0.89 ± 0.72
WASP-2b (LOW)
2020-07-23		Manfred Raetz
Volkssternwarte Kirchheim		Cassegrain 600/4800
Moravian Instruments G2-1600 / Clear / 120.0		2.36 ± 0.58
WASP-2b (LOW)
2020-07-23		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 120.0		1.5 ± 1.01
WASP-2b (LOW)
2020-07-20		Dim Stouraitis
Galilaios		SCT
SXVF-H9 Starlight-Xpress / R / 40.0		-0.92 ± 1.3
WASP-2b (LOW)
2020-07-20		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / I / 240.0		-1.06 ± 1.3
WASP-2b (LOW)
2020-07-07		Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / Lum / 30.0		0.14 ± 0.43
WASP-2b (LOW)
2020-07-07		Didier Laloum
Observatoire Privé du Mont (OPM)		RC 8 GSO
Atik 383L+ / AstrodonExoPlanet-BB / 120.0		-1.74 ± 1.01
WASP-2b (LOW)
2019-09-14		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		2.48 ± 0.43
WASP-2b (LOW)
2019-08-30		Pavel Pintr
Horni Halze		Celestron C9.25 with Hyperstar f2.2
ASI ZWO 1600 MONO / Clear / 90.0		-0.18 ± 1.58
WASP-2b (LOW)
2019-08-30		Bernhard Wenzel
Vienna		Newton A=20 cm / F=0,9 m
DSLR Canon 200 D - 14 Bit / Lum / 60.0		-2.34 ± 3.46
WASP-2b (LOW)
2018-09-11		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		-0.89 ± 0.86
WASP-2b (LOW)
2018-08-27		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		1.78 ± 0.86
WASP-2b (LOW)
2017-09-08		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		2.06 ± 0.43
WASP-2b (LOW)
2016-09-20		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		-0.96 ± 0.72
WASP-2b (LOW)
2016-08-23		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		1.32 ± 0.72
WASP-2b (LOW)
2016-08-23		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 120.0		1.32 ± 0.72
WASP-2b (LOW)
2016-07-26		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		2.02 ± 1.15
WASP-2b (LOW)
2016-07-11		Anastasia Kokori
Holomon Astronomical Station		Celestron C11
ATIK4000/11000 / R / 120.0		-2.07 ± 1.44
WASP-2b (LOW)
2016-06-29		Marc Deldem
Les Barres Observatory		Celestron C8
SBIG ST8-XME / Clear / 120.0		0.27 ± 1.01
WASP-2b (LOW)
2015-09-18		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave
SBIG STL11K / Clear / 120.0		2.86 ± 0.72
WASP-2b (LOW)
2015-08-06		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / R / 240.0		2.92 ± 1.73
WASP-2b (LOW)
2010-07-28		Ramon Naves
Montcabrer		Meade LX200 12" ACF
Sbig ST8xme / R / 120.0		-1.29 ± 0.94
WASP-2b (LOW)
2008-08-18		Ramon Naves
Montcabrer		Meade LX200 12" ACF
Sbig ST8xme / R / 120.0		-5.63 ± 1.01

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-2b (LOW)
2022-08-04		TESS-1.34 ± 0.56
WASP-2b (LOW)
2022-07-26		TESS-0.54 ± 0.53
WASP-2b (LOW)
2022-07-24		TESS-0.47 ± 0.53
WASP-2b (LOW)
2022-07-11		TESS-1.16 ± 0.53
WASP-2b (LOW)
2022-07-09		TESS-0.5 ± 0.52

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2018-08-08 Addison et al. 2019 -2.03 ± 0.73
2010-10-09 Becker et al. 2013 1.4 ± 0.36
2010-09-11 Becker et al. 2013 0.07 ± 0.35
2010-07-04 Becker et al. 2013 -4.12 ± 1.32
2009-11-11 Southworth et al. 2010 -1.01 ± 0.24
2009-08-24 Southworth et al. 2010 -0.18 ± 0.16
2009-06-03 Southworth et al. 2010 -0.68 ± 0.13
2008-10-31 Becker et al. 2013 0.11 ± 0.12
2008-10-03 Becker et al. 2013 -0.09 ± 0.09
2008-09-05 Becker et al. 2013 0.15 ± 0.2
2008-06-15 Becker et al. 2013 0.63 ± 0.14
2007-10-16 Becker et al. 2013 1.14 ± 0.26
2007-07-26 Becker et al. 2013 1.19 ± 0.91
2007-07-24 Becker et al. 2013 -0.64 ± 0.5
2006-09-30 Charbonneau et al. 2007 -0.62 ± 0.4
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