exoclock

WASP-81b (LOW)

Discovered by: Triaud et al. 2017

The Star
Simbad
GAIA
2MASS
WASP-81
DR2 4244243354278985472
J20164989+0317385
RA 20:16:49.8900 DEC +03:17:38.454
Parallax
2.482 mas
P.M. RA
27.196 mas/y
P.M. DEC
-15.319 mas/y
MagV
12.47
MagR
12.37
MagI
11.7
MagJ
11.263
MagH
10.913
MagK
10.892
MagG
12.333
MagGBP
12.679
MagGRP
11.832
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2457705.94057 ± 0.00023 BJDTDB
Period
2.71648416 ± 4e-07 days

Transit Parameters
Triaud et al. 2017
Rp/Rs
0.112 ± 0.0012
a/Rs
6.56 +0.13 -0.16
i
88.7 +0.9 -0.9 deg
e
-
ω
- deg
DepthR*
16.66 mmag
Duration*
3.5 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Triaud et al. 2017
Teff
5870.0 +120.0 -120.0 K
Log(g)
4.26 +0.02 -0.03 cm/s2
Fe/H
-0.36 +0.14 -0.14 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 6.41"
Total Observations (Recent) 18 (3)
O-C 0.52 ± 0.41 minutes
ExoClock Observations (Recent) 17 (3)
Space Observations (Recent) 0 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs -

WASP-81b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
WASP-81b (LOW)
2022-08-06
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
1.19 ± 2.74
WASP-81b (LOW)
2022-07-12
Chiahui Wang
NTNU ES Observatory
RCOS 16" w/CCDT67 f/5.4
Atik One 6 / R / 30.0
-3.19 ± 3.17
WASP-81b (LOW)
2022-07-09
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 180.0
1.25 ± 1.73
WASP-81b (LOW)
2021-07-29
Adam Popowicz
Observatory Pyskowice
RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 120.0
2.24 ± 1.87
WASP-81b (LOW)
2021-07-29
Dim Stouraitis
Galilaios
SCT
SXVF-H9 Starlight-Xpress / R / 60.0
-0.21 ± 2.74
WASP-81b (LOW)
2021-07-29
Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)
Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / gpr / 90.0
-0.78 ± 2.59
WASP-81b (LOW)
2021-07-29
Carmelo Falco
GAL Hassin Robotic Telescope 2 (GRT2) - Multiband
Giacometti-Fogale RC16 - 2
Andor Apogee Aspen CG16M / R / 90.0
-3.95 ± 1.58
WASP-81b (LOW)
2021-07-29
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Clear / 120.0
-7.26 ± 4.32
WASP-81b (LOW)
2021-07-27
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
1.64 ± 1.01
WASP-81b (LOW)
2021-07-10
Adam Popowicz
Observatory Pyskowice
RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 119.0
-4.69 ± 2.74
WASP-81b (LOW)
2021-07-08
Anaël Wünsche
El Sauce Observatory
CDK Planewave Chili
Moravian G4 16k / Lum / 120.0
0.91 ± 0.58
WASP-81b (LOW)
2021-06-27
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 120.0
1.68 ± 1.58
WASP-81b (LOW)
2020-08-08
Phil Evans
El Sauce
Planewave CDK14
SBIG STT 1603-3 / R / 120.0
0.26 ± 1.3
WASP-81b (LOW)
2020-08-08
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 120.0
-2.04 ± 1.01
WASP-81b (LOW)
2020-07-28
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 120.0
-0.55 ± 1.15
WASP-81b (LOW)
2020-07-11
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0
-0.83 ± 1.15
WASP-81b (LOW)
2020-07-11
Danilo Sedita
Osservatorio Sedita Castrofilippo
RC GSO 14"
Moravian G2-1600 / R / 60.0
-1.98 ± 1.87

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2012-09-25 Triaud et al. 2017 0.03 ± 0.33
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