ExoClock

The Star
Simbad GAIA 2MASS	1SWASP J175207.01+373246.3 DR2 4609131509318715136 J17520702+3732461
RA	17:52:07.0185		DEC	+37:32:46.237
Parallax 4.294 mas		P.M. RA -24.529 mas/y		P.M. DEC 34.809 mas/y
Mag_V 12.402	Mag_R 12.06	Mag_I 11.603	Mag_J 11.015	Mag_H 10.655	Mag_K 10.608
Mag_G 12.2		Mag_{G_BP} 12.584		Mag_{G_RP} 11.667
^* calculated from GAIA magnitudes

Ephemeris - Verified
Jiang et al. 2013
Mid-time 2454185.91116 ± 6e-05 BJD_TDB
Period 1.30618619 ± 1.5e-07 days
Transit Parameters
Christiansen et al. 2011
R_p/R_s 0.17 ± 0.03	a/R_s 6.0 +0.8 -0.7		i 82.0 +0.3 -0.3 deg
R_p/R_s 0.17 ± 0.03	e -		ω - deg
Depth_R^* 28.34 mmag		Duration^* 1.38 hours
^* calculated from the other parameters, using PyLightcurve
Limb Darkening Parameters
Torres et al. 2008
T_eff 5650.0 +75.0 -75.0 K	Log(g) 4.58 +0.02 -0.01 cm/s²		Fe/H -0.19 +0.08 -0.08 dex

ExoClock Status
Observing Priority Total Observations (Recent) O-C minutes Total Literature Mid-times		LOW 97 (22) 0.98±0.06 0

ExoClock Observations

Observation Date	Observer Observatory	Telescope Camera / Filter / Exp [s]	O-C minutes
2021-09-11	Didier Laloum Observatoire Privé du Mont (OPM)	RC 8 GSO Atik 383L+ / Astrodon ExoPlanet-BB / 120.0	1.0 ± 1.2
2021-08-29	Dominique DANIEL La Montjoie	Celestron CGX C8 XLT Camera CMOS ZWO ASI294MC pro (color) / Clear / 120.0	3.1 ± 0.9
2021-08-08	Georgios Lekkas Specca Observatory	Newtonian Reflector 254/1200 mm Atik 320E / R / 60.0	1.2 ± 1.7
2021-08-08	Bernhard Wenzel Kirchheim, Thüringen- Germany	Newton A=300 / F=1200 mm DSLR Canon 200 D 14 Bit, 3,75 µm Pixel / Clear / 45.0	-1.7 ± 2.0
2021-07-22	Enrique Arce Vallbona Observatory	Newton 10" f4 Atik 414 ex mono / V / 30.0	0.5 ± 1.0
2021-07-09	Coliac Jean-françois OABAC	N200 f4 ASI 183mm pro / Clear / 120.0	0.9 ± 0.9
2021-07-05	Andras Dan Rocca1	Celestron C8 QHY 183 M / Clear / 60.0	1.1 ± 0.9
2021-07-02	Alexandre Santos Lisbon	GSO Ritchey-Chrétien 203/1624 mm RC 8 Canon 600D / Clear / 50.0	1.2 ± 3.0
2021-06-26	Attilio Bruzzone Anxanum Observatory	LX200 ACF FLI Microline 11002 / Lum / 60.0	-0.3 ± 1.3
2021-06-22	Adam Popowicz Otivar dome2	Newton 12" ASA ASI ZWO 1600MM / R / 93.0	-0.5 ± 0.7
2021-06-18	Alessandro Marchini Astronomical Observatory, University of Siena	Mak-Cas 0.3m f/5.6 Sbig STL-6303 / I / 180.0	1.9 ± 1.0
2021-06-18	Ivo Peretto MarSEC Marana Space Explorer Center	R-C Moravia G2-1600 MkII / Clear / 120.0	1.3 ± 0.6
2021-06-01	Francois Regembal HRTobs	Astrosib RC360 SBIG STX 16803 / Lum / 60.0	0.8 ± 0.9
2021-05-23	Thibaut HUMBERT Backyard	Perl 200/1000 SvBony SV305 / V / 60.0	3.2 ± 1.3
2021-04-23	Claudio Lopresti Claudio Lopresti	Mak-Newton CCD Sbig ST10xme / I / 240.0	-0.3 ± 4.3
2021-04-19	Üllar Kivila Science Centre AHHAA	TS Optics RC 203/1624 ZWO ASI224MC / Lum / 120.0	4.3 ± 1.2
2021-04-15	Adrian Jannetta Red Row (Addiscombe)	Meade ZWO ASI178MM / Clear / 120.0	3.1 ± 0.9
2021-04-02	David Bennett Rickford Observatory	10" LX200 Classic QSI 683 / Clear / 180.0	-1.9 ± 1.2
2021-03-29	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0	1.9 ± 0.9
2021-03-29	Jean-Baptiste Marquette MrKite47	Newton Sky-Watcher 200/1000 ZWO ASI183MM Pro / R / 300.0	0.8 ± 1.7
2021-03-29	Danilo Sedita Osservatorio Sedita Castrofilippo	RC GSO 10" Sbig ST10 / R / 60.0	0.2 ± 0.7
2021-03-29	Mauro Caló Cavallino	RC SBIG ST10 / Lum / 90.0	-0.1 ± 1.2
2021-03-26	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0	1.2 ± 0.9
2021-03-13	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0	1.4 ± 1.0
2021-03-09	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0	1.0 ± 0.6
2020-09-13	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0	0.4 ± 0.4
2020-08-10	Tõnis Eenmäe Tartu Observatory	Planewave CDK 12.5 Apogee Alta U42 / R / 40.0	0.0 ± 0.6
2020-08-10	Tõnis Eenmäe Tartu Observatory	Zeiss 600 Andor Ikon-L / R / 40.0	-0.6 ± 0.4
2020-08-06	Pierre Valeau Aiguillon Observatory	SCT Celestron C11 ASI 533 MC Pro / Clear / 120.0	-1.6 ± 1.2
2020-08-06	Pavel Pintr Horni Halze	Celestron C9.25 with Hyperstar f2.2 ASI ZWO 1600 MONO / R / 180.0	-1.8 ± 2.3
2020-07-24	Pierros Papadeas Archodiko Avias	Celestron EdgeHD 9.25 ASI183MM-Pro / Lum / 30.0	3.8 ± 0.7
2020-07-24	Dim Stouraitis Galilaios	SCT SXVF-H9 Starlight-Xpress / R / 40.0	2.9 ± 1.2
2020-07-24	Iakovos Strikis Elizabeth Observatory of Athens	Sky Watcher Quattro SBIG STF-8300mm / Lum / 40.0	2.2 ± 1.3
2020-07-24	Constantinos Aggelis AGGELIS CONSTANTINOS	GSO RC8 ZWO ASI183MM-PRO / Lum / 30.0	0.2 ± 2.7
2020-07-07	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0	0.9 ± 0.4
2020-06-05	Martin Fowler MicroObservatory Cecilia	MicroObservatory robotic telescope KAF 1402ME / Clear / 60.0	1.2 ± 4.3
2020-05-30	Keith Rickard Putlands Observatory	Meade LX200 10" SCT Classic SBIG ST-7XME CCD / R / 120.0	-0.1 ± 0.9
2020-05-28	Martin Fowler MicroObservatory Cecilia	MicroObservatory robotic telescope KAF 1402ME / Clear / 60.0	3.9 ± 1.7
2020-05-17	Fabio Mortari Hypatia Observatory	Newton 250mm f/4.9 Sbig ST8-XE / V / 200.0	0.3 ± 1.3
2020-05-17	Stephane Neveu Stephane Neveu	Newton Atik 314L / R / 90.0	-0.1 ± 1.6
2020-05-17	Francois Regembal HRTobs	Astrosib RC360 SBIG STX 16803 / Lum / 60.0	-1.0 ± 0.9
2020-05-17	EMMANUEL BESSON Obs privé BESSON	NEWTON 200x1100 ZWO ASI 533 MC PRO / Lum / 60.0	-1.9 ± 1.4
2020-05-13	Simon Dawes William James II Observatory	Skywatcher MN190 ZWO ASI 1600 Pro mono / R / 120.0	2.7 ± 1.3
2020-05-13	John Savage Z42 Rushay Farm Observatory	Celestron 14Edge ZWO ASI6200MM / Clear / 180.0	1.7 ± 0.6
2020-05-13	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 120.0	1.2 ± 0.9
2020-05-13	Keith Rickard Putlands Observatory	Meade LX200 10" SCT Classic SBIG ST-7XME CCD / R / 120.0	-0.9 ± 1.0
2020-05-08	Vikrant Kumar Agnihotri Cepheid Observatory India	C8/f6.3 Schmidt-Cassegrain Atik383L+ mono / R / 60.0	1.7 ± 2.9
2020-04-26	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0	-0.0 ± 0.4
2020-04-26	Simon Dawes William James II Observatory	Skywatcher MN190 ZWO ASI 1600 Pro mono / R / 30.0	-0.6 ± 0.6
2020-04-25	Wonseok Kang Deokheung Optical Astronomy Observatory	NYSC 1m Telescope (1) PL-16803 (FLI) / R / 120.0	5.4 ± 0.4
2020-04-25	Taewoo Kim Deokheung Optical Astronomy Observatory	NYSC 1m Telescope FLI PL-16803 or PI SOPHIA-2048B / R / 120.0	0.3 ± 0.3
2020-04-15	Roger Dymock MicroObservatory located at Whipple Observatory	Maksutov reflector KAF 1402ME / Clear / 60.0	-0.5 ± 3.3
2020-04-13	John Savage Z42 Rushay Farm Observatory	Celeston 14Edge with focal reducer ATIK One 9.0 / R / 240.0	-0.9 ± 0.9	- Data available
2020-04-09	Mauro Calo’ Cavallino	RC SBIG ST10 / Lum / 90.0	2.3 ± 0.9	- Data available
2020-04-09	Fabio Mortari Hypatia Observatory	Newton 250mm f/4.9 Sbig ST8-XE / Lum / 150.0	1.2 ± 0.7	- Data available
2020-04-09	Alberto Tomatis Alto-Observatory	RC STL 6303 / Lum / 120.0	-0.7 ± 0.6	- Data available
2020-04-09	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0	-0.7 ± 0.4	- Data available
2020-04-09	Danilo Sedita Osservatorio Sedita Castrofilippo	RC GSO 14" Moravian G2-1600 / R / 60.0	-1.0 ± 0.6	- Data available
2020-03-27	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 120.0	0.8 ± 1.4	- Data available
2020-03-24	Filip Walter Stefanik Observatory	Carl Zeiss MCT ZWO ASI 1600mm pro / Clear / 180.0	2.8 ± 0.6
2020-02-20	Martin Fowler MicroObservatory Cecilia	MicroObservatory robotic telescope KAF 1402ME / Clear / 60.0	1.3 ± 4.3	- Data available
2020-02-20	Roger Dymock MicroObservatory located at Whipple Observatory	Maksutov reflector KAF 1402ME / Clear / 60.0	-1.0 ± 2.6	- Data available
2019-10-29	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	3.6 ± 0.7	- Data available
2019-09-04	Alberto Tomatis Alto-Observatory	RC Sbig 6303 / Lum / 90.0	2.9 ± 0.9	- Data available
2019-08-05	Mauro Calo Cavallino	GSO RC SBIG ST10 / R / 40.0	4.3 ± 1.6	- Data available
2019-07-19	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	0.4 ± 0.6	- Data available
2019-07-06	Dim Stouraitis Galilaios	SCT SXVF-H9 Starlight-Xpress / R / 40.0	-0.9 ± 0.7
2019-07-02	Nikolaos Paschalis Nunki Observatory	Officina Stellare RILA 400 SBIG STXL 11002 / Rc / 60.0	4.9 ± 1.3	- Data available
2019-07-02	Mario Morales Aimar Observatorio de Sencelles MPC K14	10" Meade Schmidt Cassegrain SBIG ST7-XME / V / 120.0	2.5 ± 0.9
2019-06-28	Alessandro Marchini Astronomical Observatory, University of Siena	Mak-Cas 0.3m f/5.6 Sbig STL-6303 / I / 180.0	-0.2 ± 0.7
2019-05-12	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	-3.0 ± 0.9	- Data available
2018-09-02	lionel rousselot lroussel	Newton ZWO 1600 monochrome / Clear / 90.0	0.5 ± 1.0
2018-09-02	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	0.4 ± 0.3	- Data available
2018-07-09	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	0.7 ± 0.3	- Data available
2017-10-21	Mario Morales Aimar Observatorio de Sencelles MPC K14	10" Meade Schmidt Cassegrain SBIG ST7-XME / Clear / 60.0	1.5 ± 0.7
2017-07-11	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	2.5 ± 0.3	- Data available
2017-06-24	Mario Morales Aimar Observatorio de Sencelles MPC K14	10" Meade Schmidt Cassegrain SBIG ST7-XME / Clear / 120.0	0.6 ± 0.6
2017-05-21	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	0.4 ± 0.2	- Data available
2017-04-21	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	0.8 ± 0.4	- Data available
2016-08-21	Nikolaos Paschalis Nunki Observatory	Officina Stellare RILA 400 SBIG STXL 11002 / Rc / 60.0	-1.6 ± 2.6	- Data available
2016-08-08	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	2.2 ± 0.4	- Data available
2016-06-22	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	3.2 ± 0.6	- Data available
2016-05-06	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 120.0	1.1 ± 0.7	- Data available
2016-05-02	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	1.9 ± 1.0	- Data available
2016-04-15	Nikolaos Paschalis Nunki Observatory	Officina Stellare RILA 400 SBIG STXL 11002 / Rc / 60.0	-0.1 ± 1.4	- Data available
2015-10-31	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Clear / 120.0	1.8 ± 0.4	- Data available
2015-09-06	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 240.0	1.1 ± 0.4	- Data available
2015-08-16	Anaël Wünsche Observatoire des Baronnies Provençales	ASA300 FLI8300M / Clear / 240.0	1.7 ± 1.0	- Data available
2015-07-17	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 240.0	0.3 ± 0.6	- Data available
2015-07-14	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 240.0	2.4 ± 0.7	- Data available
2015-07-04	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 180.0	4.5 ± 0.4	- Data available
2015-06-17	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 120.0	-0.6 ± 0.6	- Data available
2015-05-18	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 30.0	-2.9 ± 0.6	- Data available
2015-05-11	Marc Deldem Les Barres Observatory	Celestron C8 SBIG ST8-XME / Clear / 120.0	0.5 ± 0.6	- Data available
2015-04-24	Marc Deldem Les Barres Observatory	Celestron C8 SBIG ST8-XME / Clear / 60.0	0.8 ± 0.7	- Data available
2014-03-18	Angelos Tsiaras Holomon Astronomical Station	Celestron C11 ATIK4000/11000 / Clear / 60.0	2.9 ± 0.9	- Data available
2009-04-25	Filip Walter Stefanik Observatory	Meade SCT SBIG ST-10XME / Clear / 120.0	-1.6 ± 1.2

Discovered by: O'Donovan et al. 2007