exoclock

WASP-53b (HIGH)

Discovered by: Triaud et al. 2017

The Star
Simbad
GAIA
2MASS		 WASP-53
DR2 5136559128264765184
J02073820-2039426
RA 02:07:38.2093 DEC -20:39:42.761
Parallax
4.938 mas		 P.M. RA
-9.079 mas/y		 P.M. DEC
8.19 mas/y
MagV
12.6		 MagR
12.44		 MagI
11.65		 MagJ
10.959		 MagH
10.474		 MagK
10.39
MagG
12.347		 MagGBP
12.854		 MagGRP
11.708
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2457386.6591 ± 0.0001 BJDTDB
Period
3.30984276 ± 2.2e-07 days
Transit Parameters
Triaud et al. 2017
Rp/Rs
0.1353 ± 0.0013		 a/Rs
11.05 +0.2 -0.19
 i
87.08 +0.16 -0.15 deg
e
-		 ω
- deg
DepthR*
22.72 mmag		 Duration*
2.26 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Triaud et al. 2017
Teff
4953.0 +60.0 -60.0 K
 Log(g)
4.55 +0.02 -0.02 cm/s2
 Fe/H
0.22 +0.11 -0.11 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 6.55"
Total Observations (Recent) 27 (2)
O-C 0.82 ± 0.68 minutes
ExoClock Observations (Recent) 13 (2)
Space Observations (Recent) 13 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.13207 ± 0.0006

WASP-53b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-53b (HIGH)
2025-11-28		Jean-Pascal Vignes
Deep Sky Chile		PlaneWave CDK 17"
QHYCCD 600 M / R / 60.0		2.16 ± 0.94
WASP-53b (HIGH)
2025-10-06		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		-0.63 ± 0.98
WASP-53b (HIGH)
2023-09-29		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 127.0		1.35 ± 1.87
WASP-53b (HIGH)
2023-09-09		Raylan Ari Prestes Martins
Observatório Pico dos Dias		B&C
Ikon 14912 / R / 120.0		0.28 ± 1.87
WASP-53b (HIGH)
2023-09-09		Bergerson Silva
Observatório Pico dos Dias		Boller & Chivens
Andor iXon 4269 / R / 120.0		0.28 ± 1.87
WASP-53b (HIGH)
2023-07-08		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		1.27 ± 0.98
WASP-53b (HIGH)
2022-10-13		Jean-Pascal Vignes
Deep Sky Chile		Planewave CDK400
QHYCCD 600M / R / 180.0		-0.62 ± 2.16
WASP-53b (HIGH)
2022-08-11		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		0.12 ± 1.73
WASP-53b (HIGH)
2021-11-26		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		1.76 ± 0.72
WASP-53b (HIGH)
2021-11-12		Robert Roth
TURMX Observatory		Planewave CDK17
QHY600M / rpr / 120.0		0.85 ± 0.86
WASP-53b (HIGH)
2020-10-15		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Clear / 120.0		0.69 ± 0.86
WASP-53b (HIGH)
2020-10-05		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		3.18 ± 1.15
WASP-53b (HIGH)
2020-09-15		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.81 ± 0.72

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-53b (HIGH)
2020-10-18		TESS-0.78 ± 0.92
WASP-53b (HIGH)
2020-10-15		TESS0.24 ± 0.86
WASP-53b (HIGH)
2020-10-11		TESS-1.61 ± 0.71
WASP-53b (HIGH)
2020-10-08		TESS-0.65 ± 0.82
WASP-53b (HIGH)
2020-10-01		TESS-0.52 ± 0.82
WASP-53b (HIGH)
2020-09-28		TESS0.22 ± 0.88
WASP-53b (HIGH)
2020-09-25		TESS-0.44 ± 0.89
WASP-53b (HIGH)
2018-10-14		TESS-1.5 ± 0.82
WASP-53b (HIGH)
2018-10-11		TESS-0.64 ± 0.75
WASP-53b (HIGH)
2018-10-07		TESS-1.53 ± 0.75
WASP-53b (HIGH)
2018-10-01		TESS-0.3 ± 0.75
WASP-53b (HIGH)
2018-09-28		TESS-0.43 ± 0.78
WASP-53b (HIGH)
2018-09-24		TESS-0.71 ± 0.81

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2012-01-17 Triaud et al. 2017 0.09 ± 0.17
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