exoclock

WASP-77Ab (LOW)

Discovered by: Maxted et al. 2013

The Star
Simbad
GAIA
2MASS		 BD-07 436
DR2 5178405479960844160
J02283722-0703384
RA 02:28:37.226 DEC -07:03:38.39
Parallax
9.482 mas		 P.M. RA
93.889 mas/y		 P.M. DEC
-1.567 mas/y
MagV
10.12		 MagR
10.23		 MagI*
9.344		 MagJ
8.766		 MagH
8.374		 MagK
8.405
MagG
10.097		 MagGBP
10.485		 MagGRP
9.586
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2458693.870688 ± 3.9e-05 BJDTDB
Period
1.360028949 ± 7.5e-08 days
Transit Parameters
Maxted et al. 2013
Rp/Rs
0.1301 ± 0.0007		 a/Rs**
5.41 +0.04 -0.04
 i
89.4 +0.4 -0.7 deg
e
-		 ω
- deg
DepthR*
22.93 mmag		 Duration*
2.18 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Maxted et al. 2013
Teff
5500.0 +80.0 -80.0 K
 Log(g)
4.33 +0.08 -0.08 cm/s2
 Fe/H
0.0 +0.11 -0.11 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 74 (6)
O-C -0.96 ± 0.22 minutes
ExoClock Observations (Recent) 38 (6)
Space Observations (Recent) 30 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 6 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.12796 ± 0.00013

WASP-77Ab


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
WASP-77Ab (LOW)
2023-12-29		Vikrant Kumar Agnihotri
Cepheid Observatory India		GSO Ritchey–Chrétien
Atik383L+ mono / Lum / 120.0		2.27 ± 0.65
WASP-77Ab (LOW)
2023-12-18		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / rpr / 180.0		1.44 ± 1.15
WASP-77Ab (LOW)
2023-11-29		Anis Ben Lassoued
Sousse Observatory		NEWTON SKY WATCHER
ASI 533 MM / R / 75.0		2.72 ± 1.73
WASP-77Ab (LOW)
2023-11-18		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		-1.26 ± 1.34
WASP-77Ab (LOW)
2023-11-18		Xavier Bros
Anysllum		Newton Orion Optics 14" f4.6
ASI2600MM Pro / R / 60.0		-4.67 ± 0.85
WASP-77Ab (LOW)
2023-10-13		Mercedes Correa
Teide Observatory		IAC80
Camelot2 / R / 30.0		-2.05 ± 0.68
WASP-77Ab (LOW)
2022-11-26		James Eke
Private		William Optic Z61
ZWO ASI1600MM / Lum / 35.0		1.15 ± 0.95
WASP-77Ab (LOW)
2022-11-09		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 180.0		0.88 ± 1.15
WASP-77Ab (LOW)
2022-10-25		Bernhard Wenzel
Vienna		Newton A=30 cm / F=1,2 m
DSLR Canon 200 D - 14 Bit / Lum / 100.0		-2.02 ± 1.73
WASP-77Ab (LOW)
2022-10-19		Mercedes Correa
Teide Observatory		IAC80
Camelot2 / R / 60.0		0.51 ± 0.62
WASP-77Ab (LOW)
2022-09-28		Po-Jian Chiu
zhshs obs		Takahashi FS-152
ZWO ASI6200MM / Lum / 60.0		-4.3 ± 0.95
WASP-77Ab (LOW)
2022-09-19		Leandro de Almeida
Observatório do Pico dos Dias		0.6m Boller & Chivens f/13.49
Andor Ikon 14912 CCD / I / 10.0		-1.77 ± 0.35
WASP-77Ab (LOW)
2022-01-20		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-3.12 ± 3.6
WASP-77Ab (LOW)
2022-01-18		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		2.48 ± 1.2
WASP-77Ab (LOW)
2022-01-18		Bernhard Wenzel
Vienna		Newton A=30 cm / F=1,2 m
DSLR Canon 200 D - 14 Bit / Lum / 45.0		0.09 ± 1.02
WASP-77Ab (LOW)
2022-01-05		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-1.66 ± 5.47
WASP-77Ab (LOW)
2021-12-19		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 40.0		2.88 ± 1.87
WASP-77Ab (LOW)
2021-11-04		Dominique DANIEL
La Montjoie		Celestron CGX C8 XLT
Camera CMOS ZWO ASI294MC pro (color) / Clear / 77.0		5.69 ± 2.16
WASP-77Ab (LOW)
2021-10-06		Aziz Ettahar Kaeouach
High Atlas Observatory		Celestron C11 hd
Zwo asi 294 mm pro / R / 60.0		-1.8 ± 1.25
WASP-77Ab (LOW)
2021-09-29		Andre Kovacs
MicroObservatory Cecillia		152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0		-1.53 ± 2.3
WASP-77Ab (LOW)
2021-08-30		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 60.0		0.54 ± 0.72
WASP-77Ab (LOW)
2020-11-25		Martin Smith
Heathwood Road		Skywatcher 120mm ED Apochromatic
Atik 414 ex / R / 20.0		1.55 ± 2.02
WASP-77Ab (LOW)
2020-11-06		Claudio Lopresti
Claudio Lopresti		Mak-Newton
CCD Sbig ST10xme / I / 240.0		2.13 ± 1.15
WASP-77Ab (LOW)
2020-10-31		Francois Regembal
HRTobs		Astrosib RC360
SBIG STX 16803 / Lum / 60.0		3.06 ± 1.15
WASP-77Ab (LOW)
2020-10-26		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 10.0		-1.56 ± 2.02
WASP-77Ab (LOW)
2020-10-22		Nikolaos Paschalis
Nunki Observatory		Officina Stellare RILA 400
SBIG STXL 11002 / R / 60.0		0.15 ± 2.16
WASP-77Ab (LOW)
2020-10-16		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 60.0		0.21 ± 1.15
WASP-77Ab (LOW)
2020-10-09		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 60.0		-1.31 ± 1.01
WASP-77Ab (LOW)
2020-08-06		Yves Jongen
Deep Sky Chile		Plane Wave CDK 17"
Moravian 4G / R / 120.0		0.79 ± 0.72
WASP-77Ab (LOW)
2020-01-07		Martin Fowler
MicroObservatory Cecilia		MicroObservatory robotic telescope
KAF 1402ME / Clear / 60.0		1.68 ± 2.16
WASP-77Ab (LOW)
2020-01-01		Pavel Pintr
Horni Halze		Celestron C9.25 with Hyperstar f2.2
ASI ZWO 1600 MONO / R / 180.0		0.7 ± 1.01
WASP-77Ab (LOW)
2019-12-17		Dimitrios Deligeorgopoulos
Artemis Observatory		GSO RC
Atik 16 HR / R / 60.0		0.0 ± 1.01
WASP-77Ab (LOW)
2019-12-02		Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)		Officina Stellare RiLa 400
FLI ProLine 16803 / R / 40.0		-0.4 ± 0.72
WASP-77Ab (LOW)
2019-11-02		Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)		Officina Stellare RiLa 400
FLI ProLine 16803 / R / 60.0		1.52 ± 1.15
WASP-77Ab (LOW)
2019-02-14		Lionel Rousselot
Private observatory Vierzon		Newton
ZWO 1600 monochrome / Clear / 90.0		3.62 ± 1.3
WASP-77Ab (LOW)
2018-11-08		Lorenzo Betti
Osservatorio Polifunzionale del Chianti		RC-80cm
Moravian G2 - KAF1603ME / AstrodonExoPlanet-BB / 40.0		-2.31 ± 0.43
WASP-77Ab (LOW)
2016-11-09		Marc Deldem
Les Barres Observatory		Celestron C8
SBIG ST8-XME / Clear / 80.0		0.74 ± 1.87
WASP-77Ab (LOW)
2015-12-20		Antonio Marino
UAN c/o INAF-Osservatorio Astronomico di Capodimonte, Naples ITALY		SC11
CCD Atik 314L / Clear / 90.0		6.24 ± 2.59

Space Observations
Planet
Observation Date		 Mission O-C
minutes
WASP-77Ab (LOW)
2020-11-15		TESS0.16 ± 0.22
WASP-77Ab (LOW)
2020-11-13		TESS-0.15 ± 0.23
WASP-77Ab (LOW)
2020-11-12		TESS0.34 ± 0.24
WASP-77Ab (LOW)
2020-11-10		TESS0.18 ± 0.26
WASP-77Ab (LOW)
2020-11-09		TESS-0.14 ± 0.26
WASP-77Ab (LOW)
2020-11-08		TESS-0.01 ± 0.22
WASP-77Ab (LOW)
2020-11-06		TESS0.25 ± 0.22
WASP-77Ab (LOW)
2020-11-05		TESS0.06 ± 0.22
WASP-77Ab (LOW)
2020-11-01		TESS-0.33 ± 0.2
WASP-77Ab (LOW)
2020-10-31		TESS-0.25 ± 0.23
WASP-77Ab (LOW)
2020-10-29		TESS0.38 ± 0.26
WASP-77Ab (LOW)
2020-10-28		TESS-0.54 ± 0.22
WASP-77Ab (LOW)
2020-10-26		TESS-0.12 ± 0.23
WASP-77Ab (LOW)
2020-10-25		TESS-0.07 ± 0.23
WASP-77Ab (LOW)
2020-10-24		TESS-0.03 ± 0.22
WASP-77Ab (LOW)
2020-10-22		TESS-0.17 ± 0.19
WASP-77Ab (LOW)
2018-11-12		TESS0.12 ± 0.24
WASP-77Ab (LOW)
2018-11-11		TESS0.06 ± 0.23
WASP-77Ab (LOW)
2018-11-10		TESS0.19 ± 0.23
WASP-77Ab (LOW)
2018-11-08		TESS-0.27 ± 0.23
WASP-77Ab (LOW)
2018-11-07		TESS-0.18 ± 0.22
WASP-77Ab (LOW)
2018-11-06		TESS-0.35 ± 0.23
WASP-77Ab (LOW)
2018-11-04		TESS0.08 ± 0.23
WASP-77Ab (LOW)
2018-11-03		TESS0.08 ± 0.24
WASP-77Ab (LOW)
2018-10-30		TESS0.22 ± 0.26
WASP-77Ab (LOW)
2018-10-26		TESS-0.16 ± 0.22
WASP-77Ab (LOW)
2018-10-24		TESS0.39 ± 0.22
WASP-77Ab (LOW)
2018-10-23		TESS0.11 ± 0.22
WASP-77Ab (LOW)
2018-10-22		TESS0.51 ± 0.22
WASP-77Ab (LOW)
2018-10-20		TESS0.08 ± 0.23

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2016-10-08 Cortés-Zuleta et al. 2020 2.38 ± 2.8
2016-09-27 Cortés-Zuleta et al. 2020 -1.75 ± 4.3
2015-10-04 Cortés-Zuleta et al. 2020 0.25 ± 2.3
2015-09-30 Cortés-Zuleta et al. 2020 2.41 ± 2.5
2012-12-10 Turner et al. 2016 -0.45 ± 0.55
2011-11-04 Maxted et al. 2013 -0.07 ± 0.2
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