exoclock

WASP-47b (MEDIUM)

Discovered by: Hellier et al. 2012

The Star
Simbad
GAIA
2MASS		 WASP-47
DR2 2613413008919918976
J22044873-1201079
RA 22:04:48.7262 DEC -12:01:08.000
Parallax
3.75 mas		 P.M. RA
15.023 mas/y		 P.M. DEC
-41.309 mas/y
MagV
11.99		 MagR
11.82		 MagI*
11.161		 MagJ
10.613		 MagH
10.31		 MagK
10.192
MagG
11.789		 MagGBP
12.198		 MagGRP
11.239
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2457590.21306 ± 0.00011 BJDTDB
Period
4.15915063 ± 3.9e-07 days
Transit Parameters
Vanderburg et al. 2017
Rp/Rs
0.10193 ± 0.00021		 a/Rs
9.7 +0.04 -0.04
 i
88.98 +0.2 -0.2 deg
e
-		 ω
- deg
DepthR*
14.01 mmag		 Duration*
3.57 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Hellier et al. 2012
Teff
5350.0 +90.0 -90.0 K
 Log(g)
4.35 +0.03 -0.03 cm/s2
 Fe/H
0.18 +0.07 -0.07 dex
ExoClock Status
Observing Priority MEDIUM
Minimum aperture 5.41"
Total Observations (Recent) 37 (0)
O-C 1.01 ± 0.87 minutes
ExoClock Observations (Recent) 15 (0)
Space Observations (Recent) 9 (0)
ETD Observations (Recent) 1 (0)
Literature Mid-times (Recent) 12 (0)
Kepler Rp/Rs 0.10142 ± 0.00012
TESS Rp/Rs 0.10107 ± 0.00081

WASP-47b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-47b (MEDIUM)
2024-09-02		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		1.1 ± 1.22
WASP-47b (MEDIUM)
2024-08-29		AEACI 2024
Las Cumbres, Observatorio del Teide		Smith-Cassegrain
CCD / rpr / 8.0		2.0 ± 2.16
WASP-47b (MEDIUM)
2024-08-04		Alvaro Fornas
MPC J57. Centro Astronómico Alto Turia		Meade LX200 Classic
Moravian G2 8300 / Lum / 120.0		0.57 ± 2.02
WASP-47b (MEDIUM)
2024-08-04		Ian Sharp
PixelSkies		Celestron C11 Edge HD
Starlight Xpress Trius Pro SX694 / Clear / 60.0		0.14 ± 2.3
WASP-47b (MEDIUM)
2023-08-29		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 77.0		-3.53 ± 2.74
WASP-47b (MEDIUM)
2022-09-21		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 50.0		0.14 ± 1.58
WASP-47b (MEDIUM)
2021-10-20		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-1.87 ± 1.01
WASP-47b (MEDIUM)
2021-09-25		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		1.16 ± 0.86
WASP-47b (MEDIUM)
2021-09-25		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		1.01 ± 1.01
WASP-47b (MEDIUM)
2021-08-31		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.73 ± 1.15
WASP-47b (MEDIUM)
2021-08-06		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		3.47 ± 1.01
WASP-47b (MEDIUM)
2021-07-12		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.17 ± 1.15
WASP-47b (MEDIUM)
2020-09-19		Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / R / 45.0		-2.29 ± 1.73
WASP-47b (MEDIUM)
2020-08-30		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.34 ± 0.86
WASP-47b (MEDIUM)
2020-08-26		Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / R / 45.0		2.47 ± 1.44

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-47b (MEDIUM)
2021-09-12		TESS-2.34 ± 1.09
WASP-47b (MEDIUM)
2021-09-08		TESS-2.19 ± 1.11
WASP-47b (MEDIUM)
2021-09-04		TESS-0.19 ± 1.14
WASP-47b (MEDIUM)
2021-08-22		TESS0.98 ± 1.09
WASP-47b (MEDIUM)
2015-01-18		K2-1.42 ± 0.3
WASP-47b (MEDIUM)
2014-12-28		K20.47 ± 0.23
WASP-47b (MEDIUM)
2014-11-29		K20.2 ± 0.22
WASP-47b (MEDIUM)
2014-11-25		K2-0.47 ± 0.19
WASP-47b (MEDIUM)
2014-11-21		K2-0.37 ± 0.3

ETD Observations
Planet
Observation Date		 Observer(s) ETD link O-C
minutes
WASP-47b (MEDIUM)
2019-08-25		Pau Bosch15670973604.27 ± 1.3

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2021-09-25 Nascimbeni et al. 2023 0.65 ± 1.22
2021-09-25 Nascimbeni et al. 2023 -2.86 ± 1.53
2021-09-16 Nascimbeni et al. 2023 -0.02 ± 0.49
2021-09-12 Nascimbeni et al. 2023 -1.01 ± 0.5
2021-08-27 Nascimbeni et al. 2023 0.28 ± 0.55
2021-08-18 Nascimbeni et al. 2023 1.16 ± 0.48
2021-07-28 Nascimbeni et al. 2023 -0.28 ± 0.76
2021-07-20 Nascimbeni et al. 2023 2.9 ± 1.2
2020-10-02 Nascimbeni et al. 2023 0.36 ± 0.45
2020-07-07 Nascimbeni et al. 2023 0.23 ± 0.69
2020-06-24 Nascimbeni et al. 2023 -1.03 ± 0.78
2011-07-21 Hellier et al. 2012 1.23 ± 0.32
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