exoclock

WASP-34b (MEDIUM)

Discovered by: Smalley et al. 2011

The Star
Simbad
GAIA
2MASS		 CD-23 9677
DR2 3537110833333561728
J11013589-2351382
RA 11:01:35.8978 DEC -23:51:38.384
Parallax
7.542 mas		 P.M. RA
-43.9 mas/y		 P.M. DEC
-65.794 mas/y
MagV
10.28		 MagR
10.21		 MagI
9.66		 MagJ
9.172		 MagH
8.842		 MagK
8.792
MagG
10.205		 MagGBP
10.565		 MagGRP
9.71
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459038.6385 ± 0.00013 BJDTDB
Period
4.31768429 ± 6.1e-07 days
Transit Parameters
Smalley et al. 2011
Rp/Rs
0.1123 ± 0.0012		 a/Rs
10.5 +0.092 -0.092
 i
85.2 +0.2 -0.2 deg
e
0.038 +0.012 -0.012
 ω
319.8 +23.2 -18.6 deg
DepthR*
11.0 mmag		 Duration*
2.11 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Smalley et al. 2011
Teff
5700.0 +100.0 -100.0 K
 Log(g)
4.51 +0.12 -0.12 cm/s2
 Fe/H
-0.02 +0.1 -0.1 dex
ExoClock Status
Observing Priority MEDIUM
Minimum aperture 5.0"
Total Observations (Recent) 31 (0)
O-C -0.88 ± 0.66 minutes
ExoClock Observations (Recent) 11 (0)
Space Observations (Recent) 14 (0)
ETD Observations (Recent) 4 (0)
Literature Mid-times (Recent) 2 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.11855 ± 0.00037

WASP-34b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-34b (MEDIUM)
2025-01-16		Yen-Hsing Lin
Starry House Observatory		TOA-150
ProLine PL16803 / R / 60.0		3.91 ± 2.45
WASP-34b (MEDIUM)
2024-03-16		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 60.0		-1.01 ± 0.94
WASP-34b (MEDIUM)
2024-03-03		Francois Regembal
HRT Deep Sky Chile		Astrosib RC360
Moravian C3 PRO 61000 / Lum / 90.0		0.11 ± 1.27
WASP-34b (MEDIUM)
2024-02-19		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 60.0		-4.02 ± 1.58
WASP-34b (MEDIUM)
2022-05-17		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-2.21 ± 1.01
WASP-34b (MEDIUM)
2022-04-08		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		4.07 ± 1.3
WASP-34b (MEDIUM)
2022-02-28		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.17 ± 1.73
WASP-34b (MEDIUM)
2022-02-28		Anaël Wünsche
El Sauce Observatory		CDK Planewave Chili
Moravian G4 16k / Lum / 120.0		-5.64 ± 1.3
WASP-34b (MEDIUM)
2022-02-15		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 170.0		1.92 ± 1.44
WASP-34b (MEDIUM)
2021-03-24		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		1.21 ± 1.15
WASP-34b (MEDIUM)
2021-02-13		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		-0.86 ± 1.44

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-34b (MEDIUM)
2023-04-01		TESS0.36 ± 0.46
WASP-34b (MEDIUM)
2023-03-28		TESS0.54 ± 0.52
WASP-34b (MEDIUM)
2023-03-19		TESS-0.14 ± 0.53
WASP-34b (MEDIUM)
2023-03-15		TESS-0.21 ± 0.5
WASP-34b (MEDIUM)
2021-03-28		TESS0.3 ± 0.55
WASP-34b (MEDIUM)
2021-03-24		TESS0.03 ± 0.52
WASP-34b (MEDIUM)
2021-03-15		TESS0.23 ± 0.5
WASP-34b (MEDIUM)
2021-03-11		TESS-0.94 ± 0.58
WASP-34b (MEDIUM)
2019-03-25		TESS0.36 ± 0.53
WASP-34b (MEDIUM)
2019-03-21		TESS0.15 ± 0.53
WASP-34b (MEDIUM)
2019-03-16		TESS0.15 ± 0.62
WASP-34b (MEDIUM)
2019-03-12		TESS-0.75 ± 0.6
WASP-34b (MEDIUM)
2019-03-08		TESS-1.71 ± 0.5
WASP-34b (MEDIUM)
2019-03-03		TESS0.34 ± 0.58

ETD Observations
Planet
Observation Date		 Observer(s) ETD link O-C
minutes
WASP-34b (MEDIUM)
2011-12-25		TG Tan1324988131-0.93 ± 1.44
WASP-34b (MEDIUM)
2011-06-27		Ivan Curtis1309219371-1.73 ± 2.3
WASP-34b (MEDIUM)
2011-06-14		Ivan Curtis13083829010.5 ± 3.46
WASP-34b (MEDIUM)
2011-01-18		TG Tan1295868435-0.84 ± 1.73

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2019-10-05 May et al. 2022 0.42 ± 0.29
2008-06-30 Smalley et al. 2011 1.04 ± 0.92
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