ExoClock

The Star
Simbad GAIA 2MASS	BD-01 3943 DR2 4224062406762625152 J20180931-0104324
RA	20:18:09.3209		DEC	-01:04:32.610
Parallax 6.673 mas		P.M. RA 1.35 mas/y		P.M. DEC -64.604 mas/y
Mag_V 9.75	Mag_R^* 9.348	Mag_I^* 9.024	Mag_J 8.548	Mag_H 8.286	Mag_K 8.221
Mag_G 9.572		Mag_{G_BP} 9.928		Mag_{G_RP} 9.086
^*Calculated from GAIA magnitudes.

Ephemeris - Verified
Kokori et al. 2025
Mid-time 2457282.89704 ± 0.00015 BJD_TDB
Period 2.13775158 ± 4.7e-07 days
Transit Parameters
Hellier et al. 2015
R_p/R_s 0.098 ± 0.0007	a/R_s 4.86 +0.13 -0.13		i 79.81 +0.24 -0.24 deg
R_p/R_s 0.098 ± 0.0007	e -		ω - deg
Depth_R^* 9.31 mmag		Duration^* 2.34 hours
^Calculated from the other parameters, using PyLightcurve. ^*Adjusted based on the space observations.
Limb Darkening Parameters
Hellier et al. 2015
T_eff 5970.0 +110.0 -110.0 K	Log(g) 4.18 +0.02 -0.02 cm/s²		Fe/H 0.39 +0.13 -0.13 dex

ExoClock Status
Observing Priority		LOW
Minimum aperture		5.0"
Total Observations (Recent)		43 (8)
O-C		1.87 ± 0.65 minutes
ExoClock Observations (Recent)		32 (8)
Space Observations (Recent)		0 (0)
ETD Observations (Recent)		0 (0)
Literature Mid-times (Recent)		11 (0)
Kepler R_p/R_s		-
TESS R_p/R_s		-

Planet Observation Date	Observer Observatory	Telescope Camera / Filter / Exp [s]	O-C minutes
ExoClock Observations
WASP-74b (LOW) 2026-06-26	Javier Alonso Santiago OACt	RCX400 QHY268M / rpr / 35.0	1.31 ± 1.32
WASP-74b (LOW) 2025-08-18	Anis Ben Lassoued Sousse Observatory	Maksutov Cassegrain ASI 533MM PRO / R / 30.0	4.8 ± 2.88
WASP-74b (LOW) 2025-08-03	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 25.0	2.01 ± 2.45
WASP-74b (LOW) 2025-08-03	Tommaso Dittadi TD-TRO	Ritchey-Chretien Moravian G2-1600 / I / 120.0	1.72 ± 2.16
WASP-74b (LOW) 2025-07-22	Patrick Farizy Patrick Farizy	Celestron C8 Touptek 585 C / Clear / 40.0	3.89 ± 3.46
WASP-74b (LOW) 2025-07-04	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / R / 120.0	7.08 ± 2.02
WASP-74b (LOW) 2025-07-04	Tommaso Dittadi TD-TRO	Ritchey-Chretien Moravian G2-1600 / R / 60.0	-1.71 ± 3.17
WASP-74b (LOW) 2025-07-04	Matthieu Bachschmidt Gonachon	Celestron C11 SBIG ST8XME / AstrodonExoPlanet-BB / 60.0	-10.92 ± 3.6
WASP-74b (LOW) 2025-06-20	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / R / 30.0	6.16 ± 5.47
WASP-74b (LOW) 2024-09-10	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 30.0	-1.61 ± 2.16
WASP-74b (LOW) 2024-08-11	Riccardo Zancan Riccardo	Celestron C11 ASI-1600-MM / R / 40.0	2.31 ± 2.59
WASP-74b (LOW) 2024-07-12	Giovanni Calapai Home Astronomical Observatory	Celestron 11 Schmidt-Cassegrain Atik 314L+ / Clear / 90.0	2.92 ± 1.58
WASP-74b (LOW) 2024-06-28	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 45.0	0.27 ± 2.74
WASP-74b (LOW) 2024-06-23	Yen-Hsing Lin NTHU Observatory	Showa 10" ASI6200MM Pro / Lum / 30.0	4.17 ± 3.31
WASP-74b (LOW) 2023-08-20	Miguel Ángel Álava Amat Sarriguren	Meade SC 8" Asi 1600 MM / rpr / 180.0	1.33 ± 2.74
WASP-74b (LOW) 2023-08-20	Bernhard Wenzel Volkssternwarte Kirchheim	CAS A=60cm / F=1,8m SBIG STL-6303-3 CCD 3072 x 2048 Pixels (9µm) / R / 10.0	0.03 ± 3.74
WASP-74b (LOW) 2023-07-21	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 30.0	2.22 ± 1.58
WASP-74b (LOW) 2023-07-07	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 30.0	-0.57 ± 2.3
WASP-74b (LOW) 2023-07-07	Antonio Ferretti Anxanum Observatory	Meade LX200 ACF QHY 268M / Clear / 30.0	-0.86 ± 2.16
WASP-74b (LOW) 2023-06-26	Bryan Martin Tiger Butte Observatory Remote	AG Optical IDK ZWO ASI 294 / I / 120.0	-9.13 ± 4.9
WASP-74b (LOW) 2022-08-28	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / R / 60.0	2.64 ± 2.88
WASP-74b (LOW) 2022-08-16	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / R / 80.0	-3.25 ± 2.45
WASP-74b (LOW) 2022-07-15	John Savage Rushay Farm Z42	Skywatcher Esprit 150 ZWO ASI 6200MM / rpr / 30.0	5.79 ± 3.46
WASP-74b (LOW) 2022-07-15	John Savage Z42 Rushay Farm Observatory	Celeston 14Edge with focal reducer ATIK One 9.0 / R / 30.0	4.2 ± 4.32
WASP-74b (LOW) 2022-07-15	Adrian Jones Private Observatory (I64)	Meade ACF 30cm QSI 583 / R / 59.0	-1.56 ± 2.59
WASP-74b (LOW) 2021-08-21	Giuseppe Marino Gruppo Astrofili Catanesi	Newtonian SBIG ST-7 XME / I / 100.0	0.73 ± 1.87
WASP-74b (LOW) 2020-07-31	Adrian Jones Private Observatory (I64)	Meade ACF 30cm QSI 583 / R / 10.0	6.26 ± 9.07
WASP-74b (LOW) 2020-07-31	Carmelo Falco GALHassin Robotic Telescope 2 (GRT2)	Giacometti-Fogale RC16 Andor Apogee Aspen CG16M / Lum / 60.0	5.25 ± 2.59
WASP-74b (LOW) 2020-07-31	John Savage Z42 Rushay Farm Observatory	Celestron 14Edge ZWO ASI6200MM / R / 60.0	0.07 ± 2.45
WASP-74b (LOW) 2020-07-28	Iakovos Strikis Elizabeth Observatory of Athens	Sky Watcher Quattro SBIG STF-8300mm / R / 15.0	3.31 ± 3.6
WASP-74b (LOW) 2020-07-16	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / R / 120.0	3.32 ± 2.16
WASP-74b (LOW) 2018-08-31	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 60.0	1.6 ± 1.58
Literature Mid-times
Planet Observation Date	Reference		O-C minutes
2020-08-27	Baştürk et al. 2022		1.04 ± 1.17
2020-08-14	Baştürk et al. 2022		-6.75 ± 1.44
2020-08-12	Baştürk et al. 2022		-2.87 ± 0.69
2019-07-07	Baştürk et al. 2022		2.9 ± 1.2
2015-09-13	Mancini et al. 2019		-0.31 ± 0.49
2015-07-28	Mancini et al. 2019		0.88 ± 1.21
2015-07-15	Mancini et al. 2019		0.3 ± 0.29
2015-06-30	Mancini et al. 2019		0.14 ± 0.55
2015-06-15	Mancini et al. 2019		1.06 ± 0.32
2015-05-31	Mancini et al. 2019		-0.01 ± 0.24
2013-08-02	Hellier et al. 2015		-0.89 ± 0.29

WASP-74b (LOW)

Discovered by: Hellier et al. 2015

ExoClock Observations

Literature Mid-times