exoclock

WASP-26b (MEDIUM)

Discovered by: Smalley et al. 2010

The Star
Simbad
GAIA
2MASS		 WASP-26
DR2 2416782701664155008
J00182469-1516022
RA 00:18:24.7008 DEC -15:16:02.277
Parallax
3.929 mas		 P.M. RA
27.393 mas/y		 P.M. DEC
-24.407 mas/y
MagV
11.3		 MagR
10.99		 MagI
10.46		 MagJ
10.021		 MagH
9.775		 MagK
9.69
MagG
10.994		 MagGBP
11.314		 MagGRP
10.538
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2457450.20769 ± 0.00023 BJDTDB
Period
2.75659766 ± 4.4e-07 days
Transit Parameters
Southworth et al. 2014
Rp/Rs
0.0991 ± 0.0018		 a/Rs
6.64 +0.16 -0.16
 i
82.8 +0.3 -0.3 deg
e
-		 ω
- deg
DepthR*
9.9 mmag		 Duration*
2.3 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Smalley et al. 2010
Teff
5950.0 +100.0 -100.0 K
 Log(g)
4.3 +0.2 -0.2 cm/s2
 Fe/H
-0.02 +0.09 -0.09 dex
ExoClock Status
Observing Priority MEDIUM
Minimum aperture 5.93"
Total Observations (Recent) 25 (0)
O-C 2.06 ± 0.77 minutes
ExoClock Observations (Recent) 13 (0)
Space Observations (Recent) 6 (0)
ETD Observations (Recent) 1 (0)
Literature Mid-times (Recent) 5 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.10009 ± 0.00076

WASP-26b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-26b (MEDIUM)
2024-11-25		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 90.0		1.84 ± 0.82
WASP-26b (MEDIUM)
2024-11-16		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 60.0		6.35 ± 2.45
WASP-26b (MEDIUM)
2024-09-30		Deborah Smith
Complejo Astronomico Los Coloraos, Gorafe		C9.25
QHY9 / R / 60.0		-7.24 ± 4.9
WASP-26b (MEDIUM)
2023-09-22		Aziz Ettahar Kaeouach
Atlas Sky Observatory		Planewaves CDK 500
Zwo asi 6200 / R / 30.0		2.6 ± 1.44
WASP-26b (MEDIUM)
2023-09-11		Bernhard Wenzel
Vienna		Newton A=30 cm / F=1,2 m
DSLR Canon 200 D - 14 Bit / Lum / 100.0		-2.96 ± 4.61
WASP-26b (MEDIUM)
2022-11-11		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		7.9 ± 3.46
WASP-26b (MEDIUM)
2022-10-26		Andre Kovacs
Madrona Peak Observatory		RC Optical 24"
Apogee KAF-16803 CCD / R / 60.0		-1.61 ± 1.27
WASP-26b (MEDIUM)
2022-10-17		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 27.0		4.56 ± 4.32
WASP-26b (MEDIUM)
2021-10-30		Mike Miller
Georgetown Observatory		Meade 10 inch ACF f8 f5.6
QSI 660 / V / 60.0		-2.79 ± 4.32
WASP-26b (MEDIUM)
2020-09-06		Phil Evans
El Sauce		Planewave CDK14
SBIG STT 1603-3 / R / 120.0		0.3 ± 1.44
WASP-26b (MEDIUM)
2020-08-15		Francois Regembal
HRTobs		Astrosib RC360
SBIG STX 16803 / Lum / 120.0		-1.45 ± 2.74
WASP-26b (MEDIUM)
2020-08-12		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-4.05 ± 0.86
WASP-26b (MEDIUM)
2019-10-27		Stephen Futcher
Hampshire Astronomical Group, Clanfield		Meade Schmidt-Cassegrain Reflector
Starlight Xpress SX-46 / R / 60.0		1.5 ± 3.31

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-26b (MEDIUM)
2020-09-17		TESS1.83 ± 1.08
WASP-26b (MEDIUM)
2020-09-14		TESS-0.57 ± 0.98
WASP-26b (MEDIUM)
2020-09-11		TESS2.02 ± 0.98
WASP-26b (MEDIUM)
2020-09-03		TESS0.21 ± 0.89
WASP-26b (MEDIUM)
2020-08-31		TESS-0.48 ± 1.04
WASP-26b (MEDIUM)
2020-08-28		TESS0.16 ± 0.96

ETD Observations
Planet
Observation Date		 Observer(s) ETD link O-C
minutes
WASP-26b (MEDIUM)
2021-11-01		Fran Campos16363965104.27 ± 3.46

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2013-09-13 Southworth et al. 2014 -0.48 ± 0.55
2013-09-02 Southworth et al. 2014 0.04 ± 0.52
2013-08-22 Southworth et al. 2014 -0.45 ± 0.59
2012-09-17 Southworth et al. 2014 1.94 ± 0.62
2009-10-19 Smalley et al. 2010 -0.96 ± 0.72
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