exoclock

WASP-170b (LOW)

Discovered by: Barkaoui et al. 2019

The Star
Simbad
GAIA
2MASS		 WASP-170
DR2 5656184406542140032
J09013992-2043133
RA 09:01:39.9237 DEC -20:43:13.344
Parallax
3.244 mas		 P.M. RA
-9.984 mas/y		 P.M. DEC
1.128 mas/y
MagV
12.613		 MagR*
12.221		 MagI*
11.73		 MagJ
11.133		 MagH
10.84		 MagK
10.724
MagG
12.469		 MagGBP
12.904		 MagGRP
11.885
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459265.53377 ± 0.00011 BJDTDB
Period
2.34477791 ± 3e-07 days
Transit Parameters
Barkaoui et al. 2019
Rp/Rs
0.1175 ± 0.0041		 a/Rs
7.71 +0.21 -0.18
 i
84.87 +0.28 -0.28 deg
e
-		 ω
- deg
DepthR*
15.78 mmag		 Duration*
2.06 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Barkaoui et al. 2019
Teff
5600.0 +150.0 -150.0 K
 Log(g)
4.47 +0.03 -0.03 cm/s2
 Fe/H
0.22 +0.09 -0.09 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 6.11"
Total Observations (Recent) 51 (4)
O-C 1.51 ± 0.3 minutes
ExoClock Observations (Recent) 20 (4)
Space Observations (Recent) 29 (0)
ETD Observations (Recent) 1 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.12325 ± 0.00054

WASP-170b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-170b (LOW)
2026-02-20		Hung-Chin Lin
Lulin		RC
ASI294MM Pro / I / 120.0		6.53 ± 2.16
WASP-170b (LOW)
2025-12-26		Darryl Madison
Ajijic Observatory		Celestron CPC 800 Edge HD
ZWO2400MC / Clear / 90.0		-1.28 ± 2.3
WASP-170b (LOW)
2025-12-05		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 90.0		-0.38 ± 0.85
WASP-170b (LOW)
2025-04-17		Jean-Pascal Vignes
Deep Sky Chile		Planewave CDK400
QHYCCD 600M / Lum / 60.0		3.46 ± 0.42
WASP-170b (LOW)
2024-12-30		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 90.0		-1.17 ± 0.79
WASP-170b (LOW)
2024-04-28		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		3.58 ± 1.58
WASP-170b (LOW)
2024-02-27		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		-2.47 ± 0.85
WASP-170b (LOW)
2023-03-31		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		1.12 ± 1.44
WASP-170b (LOW)
2023-03-24		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		0.96 ± 0.91
WASP-170b (LOW)
2023-01-22		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		1.98 ± 1.07
WASP-170b (LOW)
2023-01-22		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 180.0		-0.32 ± 0.79
WASP-170b (LOW)
2022-04-11		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		0.35 ± 0.86
WASP-170b (LOW)
2022-03-06		Sebastien Brouillard
AstroQueyras		RC500
STX16803 / R / 180.0		4.33 ± 2.3
WASP-170b (LOW)
2022-02-16		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		1.63 ± 1.3
WASP-170b (LOW)
2022-01-07		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		-0.35 ± 0.72
WASP-170b (LOW)
2021-12-31		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / Lum / 120.0		-0.88 ± 0.72
WASP-170b (LOW)
2021-12-17		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 90.0		-0.49 ± 4.32
WASP-170b (LOW)
2021-12-17		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.93 ± 1.3
WASP-170b (LOW)
2020-02-27		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / V / 120.0		-0.07 ± 1.15
WASP-170b (LOW)
2020-02-06		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / V / 120.0		1.51 ± 1.01

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-170b (LOW)
2023-03-10		TESS-0.16 ± 1.24
WASP-170b (LOW)
2023-03-07		TESS-0.11 ± 0.96
WASP-170b (LOW)
2023-03-05		TESS0.21 ± 0.99
WASP-170b (LOW)
2023-03-02		TESS-1.3 ± 0.98
WASP-170b (LOW)
2023-02-28		TESS-0.58 ± 0.96
WASP-170b (LOW)
2023-02-23		TESS0.87 ± 1.09
WASP-170b (LOW)
2023-02-21		TESS-0.01 ± 1.02
WASP-170b (LOW)
2023-02-19		TESS-0.14 ± 1.02
WASP-170b (LOW)
2023-02-16		TESS1.25 ± 0.86
WASP-170b (LOW)
2023-02-14		TESS0.84 ± 0.98
WASP-170b (LOW)
2023-02-12		TESS0.75 ± 1.21
WASP-170b (LOW)
2023-02-09		TESS1.28 ± 1.27
WASP-170b (LOW)
2023-02-07		TESS-0.98 ± 1.07
WASP-170b (LOW)
2023-02-05		TESS-1.77 ± 1.05
WASP-170b (LOW)
2023-02-02		TESS1.17 ± 0.99
WASP-170b (LOW)
2023-01-29		TESS-3.18 ± 1.17
WASP-170b (LOW)
2023-01-26		TESS-0.03 ± 1.07
WASP-170b (LOW)
2023-01-24		TESS-2.16 ± 1.15
WASP-170b (LOW)
2023-01-22		TESS-0.93 ± 1.05
WASP-170b (LOW)
2023-01-19		TESS-0.05 ± 1.41
WASP-170b (LOW)
2021-03-06		TESS0.19 ± 1.01
WASP-170b (LOW)
2021-03-03		TESS-1.7 ± 0.96
WASP-170b (LOW)
2021-03-01		TESS-1.5 ± 0.91
WASP-170b (LOW)
2021-02-27		TESS1.02 ± 1.09
WASP-170b (LOW)
2021-02-20		TESS0.62 ± 1.02
WASP-170b (LOW)
2021-02-17		TESS1.64 ± 1.12
WASP-170b (LOW)
2021-02-15		TESS1.92 ± 1.01
WASP-170b (LOW)
2021-02-12		TESS-0.6 ± 0.94
WASP-170b (LOW)
2021-02-10		TESS0.54 ± 0.96

ETD Observations
Planet
Observation Date		 Observer(s) ETD link O-C
minutes
WASP-170b (LOW)
2020-02-24		Marc Bretton15825876960.01 ± 0.53

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2017-02-17 Barkaoui et al. 2019 -0.08 ± 0.29
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