ExoClock

The Star
Simbad GAIA 2MASS	HAT-P-3 DR2 1510191594552968832 J13442258+4801432
RA	13:44:22.5939		DEC	+48:01:43.206
Parallax 7.403 mas		P.M. RA -19.746 mas/y		P.M. DEC -24.008 mas/y
Mag_V 11.86	Mag_R^* 11.025	Mag_I 10.504	Mag_J 9.936	Mag_H 9.542	Mag_K 9.448
Mag_G 11.28		Mag_{G_BP} 11.769		Mag_{G_RP} 10.672
^*Calculated from GAIA magnitudes.

Ephemeris - Verified
Kokori et al. 2022
Mid-time 2456843.022438 ± 8.1e-05 BJD_TDB
Period 2.89973815 ± 1.3e-07 days
Transit Parameters
Chan et al. 2011
R_p/R_s 0.1063 ± 0.002	a/R_s 10.4 +0.5 -0.5		i 87.1 +0.6 -0.6 deg
R_p/R_s 0.1063 ± 0.002	e -		ω - deg
Depth_R^* 14.14 mmag		Duration^* 2.08 hours
^Calculated from the other parameters, using PyLightcurve. ^*Adjusted based on the space observations.
Limb Darkening Parameters
Torres et al. 2008
T_eff 5185.0 +80.0 -80.0 K	Log(g) 4.56 +0.03 -0.03 cm/s²		Fe/H 0.27 +0.08 -0.08 dex

ExoClock Status
Observing Priority		LOW
Minimum aperture		5.0"
Total Observations (Recent)		128 (21)
O-C		0.23 ± 0.2 minutes
ExoClock Observations (Recent)		91 (21)
Space Observations (Recent)		14 (0)
ETD Observations (Recent)		0 (0)
Literature Mid-times (Recent)		23 (0)
Kepler R_p/R_s		-
TESS R_p/R_s		0.10719 ± 0.0004

Planet Observation Date	Observer Observatory	Telescope Camera / Filter / Exp [s]	O-C minutes
ExoClock Observations
HAT-P-3b (LOW) 2024-08-11	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0	-1.59 ± 2.02
HAT-P-3b (LOW) 2024-07-13	Claudio Lopresti Claudio Lopresti	Meade LX200 12" CCD Sbig ST9xe / I / 120.0	-0.03 ± 1.58
HAT-P-3b (LOW) 2024-07-10	John Savage Rushay Farm Z42	Skywatcher Esprit 150 ZWO ASI 6200MM / R / 30.0	0.61 ± 1.4
HAT-P-3b (LOW) 2024-06-14	Dim Stouraitis Galilaios	SCT SXVF-H9 Starlight-Xpress / R / 50.0	6.85 ± 2.3
HAT-P-3b (LOW) 2024-06-14	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0	-2.36 ± 2.02
HAT-P-3b (LOW) 2024-06-11	Dominique DANIEL La Montjoie	T250 Skyvision Camera CMOS ZWO ASI2600MC pro (color) / Clear / 45.0	-0.29 ± 2.02
HAT-P-3b (LOW) 2024-05-16	Tommaso Dittadi TD-TRO	Ritchey-Chretien Moravian G2-1600 / V / 60.0	4.38 ± 2.02
HAT-P-3b (LOW) 2024-05-16	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 120.0	-0.23 ± 3.6
HAT-P-3b (LOW) 2024-05-16	Andre Kovacs Moletai Astronomical Observatory (MAO)	35 cm Maksutov f/3.5 Apogee Alta U47 / R / 45.0	-2.22 ± 0.89
HAT-P-3b (LOW) 2024-04-14	Esteban Reina Observatori de Masquefa	Meade LX200 ZWO ASI 294 MM Pro / R / 90.0	4.77 ± 1.05
HAT-P-3b (LOW) 2024-04-14	Gustavo Muler Obs. Nazaret J47	lx 200 ST8 XME AO8 / R / 120.0	-0.19 ± 0.82
HAT-P-3b (LOW) 2024-04-14	Ramon Naves Montcabrer	Meade LX200 12" ACF Moravian G4-9000 / ipr / 120.0	-2.36 ± 0.98
HAT-P-3b (LOW) 2024-04-14	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0	-2.65 ± 1.44
HAT-P-3b (LOW) 2024-04-09	Bryan Martin Tiger Butte Observatory Remote	AG Optical IDK ZWO ASI 294 / Lum / 60.0	0.34 ± 1.58
HAT-P-3b (LOW) 2024-03-19	Zlatko Orbanić Explorer	Newton Truss 254mm F/3.8 Atik 414 Ex Mono / rpr / 50.0	-0.28 ± 1.58
HAT-P-3b (LOW) 2024-03-19	Fabio Mortari Hypatia Observatory	Ritchey Chretienne 250mm f/5.3 MORAVIAN C2-7000A / R / 148.0	-0.43 ± 1.73
HAT-P-3b (LOW) 2024-03-19	Matthieu Bachschmidt Gonachon	Celestron C11 SBIG ST8XME / AstrodonExoPlanet-BB / 119.0	-3.2 ± 1.22
HAT-P-3b (LOW) 2024-03-19	Jean-Marc Beraud Observatoire La tondeuse	Newton 410mm ASI2400MC / Clear / 30.0	-3.98 ± 1.2
HAT-P-3b (LOW) 2024-03-14	Ramon Naves Montcabrer	Meade LX200 12" ACF Moravian G4-9000 / ipr / 120.0	2.65 ± 0.75
HAT-P-3b (LOW) 2024-03-14	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0	-0.13 ± 1.18
HAT-P-3b (LOW) 2023-12-18	christian PANTACCHINI Observatoire de BENAYES	Skywhatcher Newton SBIG STF-8300M / Lum / 60.0	0.9 ± 6.34
HAT-P-3b (LOW) 2023-07-02	Mario Morales-Aimar Observatorio de Sencelles MPC K14	Reflector 10" SBIG ST7-XME / V / 140.0	0.63 ± 1.44
HAT-P-3b (LOW) 2023-06-03	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / Clear / 120.0	0.63 ± 0.58
HAT-P-3b (LOW) 2023-06-01	Adam Popowicz Otivar dome2	Newton 12" ASA ASI ZWO 1600MM / R / 40.0	1.41 ± 1.22
HAT-P-3b (LOW) 2023-06-01	Guillaume Biesse Observatoire de la colline Tossius	Ritchey Chretien GSO ASI 533 MM - Gain=0 / Clear / 180.0	-0.78 ± 1.58
HAT-P-3b (LOW) 2023-05-05	jean paul vergne CH9-gapra	Ritchey Chretien zwo 294mm pro / Lum / 120.0	3.39 ± 1.4
HAT-P-3b (LOW) 2023-05-05	Eric Miny BLOIS SOLOGNE ASTRONOMIE OBSERVATORY	Newton T305 QSI 683WS / Lum / 60.0	1.97 ± 1.25
HAT-P-3b (LOW) 2023-05-03	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 150.0	-0.09 ± 1.58
HAT-P-3b (LOW) 2023-05-03	Ramon Naves Montcabrer	Meade LX200 12" ACF Moravian G4-9000 / rpr / 120.0	-1.33 ± 1.12
HAT-P-3b (LOW) 2023-04-06	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 120.0	-0.89 ± 1.58
HAT-P-3b (LOW) 2023-03-29	Darryl Madison Ajijic Observatory	Celestron CPC 800 Edge HD ZWO2400MC / Clear / 90.0	-5.48 ± 2.16
HAT-P-3b (LOW) 2023-03-06	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / R / 180.0	0.92 ± 0.89
HAT-P-3b (LOW) 2023-03-06	Marc Deldem Les Barres Observatory	Celestron C8 SBIG ST8-XME / Clear / 120.0	0.72 ± 0.86
HAT-P-3b (LOW) 2023-03-03	David Quiles David Quiles Observatory	Celestron EDGEHD 800 Omegon veTEC 571M / R / 120.0	2.03 ± 1.3
HAT-P-3b (LOW) 2023-03-03	Sacha Foschino Observatoire des Baronnies Provençales	Planewave 430mm SVO ASI 6200 MM Pro / Clear / 120.0	0.71 ± 0.78
HAT-P-3b (LOW) 2023-02-07	David Wright Yorick (private observatory)	10" Ritchey-Chretien QSI 683WSG-8 / R / 200.0	-2.24 ± 2.16
HAT-P-3b (LOW) 2023-02-02	Marco Stefanini Osservatorio Aldebaran	Ritchey-Chretien Altair Astro Atik 4000 LE / Lum / 250.0	3.78 ± 2.59
HAT-P-3b (LOW) 2023-01-04	Miguel Ángel Álava Amat Sarriguren	Meade SC 8" Asi 1600 MM / Lum / 180.0	-0.41 ± 1.02
HAT-P-3b (LOW) 2022-06-20	Kevin Johnson Holbrook Observatory	Meade LX10 EMC Atik 383L+ / R / 60.0	2.73 ± 1.87
HAT-P-3b (LOW) 2022-06-20	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / R / 120.0	-0.72 ± 1.3
HAT-P-3b (LOW) 2022-06-15	Thomas Sprecher SHED OBSERVATORY	RC8 WITH .8FR ASI533 MC PRO / Clear / 90.0	-3.93 ± 3.46
HAT-P-3b (LOW) 2022-05-20	Marco Iozzi H.O.B. Astronomical Observatory (MPC code L63)	Schmidt Cassegrain CCD ATIK 383L+ / V / 50.0	0.02 ± 2.02
HAT-P-3b (LOW) 2022-04-26	Emmanuel THIERS Astronomade OBP	Skywatcher 120ed Equinox Zwo Asi 071 Pro MC / Clear / 120.0	5.07 ± 3.02
HAT-P-3b (LOW) 2022-04-26	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 90.0	2.19 ± 1.15
HAT-P-3b (LOW) 2022-03-25	Mark Salisbury POST	Orion Optics ODK SBIG ST-10 XME / R / 240.0	-0.37 ± 0.72
HAT-P-3b (LOW) 2022-03-25	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 90.0	-0.95 ± 2.74
HAT-P-3b (LOW) 2022-03-25	Jacques Michelet Claix	GSO Ritchey-Chrétien QSI-632 / R / 150.0	-2.1 ± 1.87
HAT-P-3b (LOW) 2022-03-23	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 100.0	1.56 ± 5.76
HAT-P-3b (LOW) 2022-03-23	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280/1850 (C11 with Starizona reducer) Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0	-0.78 ± 0.72
HAT-P-3b (LOW) 2022-03-23	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0	-1.04 ± 0.72
HAT-P-3b (LOW) 2022-02-24	Jean-Claude MARIO Observatoire de la Cabergue	T 520 Cassegrain "Arp 83" STL 11000 - KAI 11000 / Clear / 60.0	-0.11 ± 1.15
HAT-P-3b (LOW) 2022-01-26	Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81)	Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 150.0	-1.43 ± 1.87
HAT-P-3b (LOW) 2021-07-07	Andrius Bruzas Teide	Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 60.0	1.26 ± 1.87
HAT-P-3b (LOW) 2021-06-08	Eric Miny BLOIS SOLOGNE ASTRONOMIE OBSERVATORY	Newton T305 QSI 683WS / Lum / 60.0	-0.35 ± 1.58
HAT-P-3b (LOW) 2021-06-08	Jean-Louis Naudin Gatinais French Observatory (GFO)	Orion Astrograph 8" f/3.9 ZWO ASI 290 MC / Clear / 40.0	-2.94 ± 2.02
HAT-P-3b (LOW) 2021-05-31	Andre Kovacs MicroObservatory Cecillia	152mm Maksutov Kodak KAF-1402ME / Clear / 60.0	-2.63 ± 2.45
HAT-P-3b (LOW) 2021-05-05	Andre Kovacs MicroObservatory Cecillia	152mm Maksutov Kodak KAF-1402ME / Clear / 60.0	-2.28 ± 2.88
HAT-P-3b (LOW) 2021-05-02	Andre Kovacs MicroObservatory Cecillia	152mm Maksutov Kodak KAF-1402ME / Clear / 60.0	-3.38 ± 2.02
HAT-P-3b (LOW) 2021-04-14	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave 2 ZWO ASI6200 / Clear / 120.0	3.72 ± 1.15
HAT-P-3b (LOW) 2021-04-14	Didier Laloum Observatoire Privé du Mont (OPM)	RC 8 GSO Atik 383L+ / AstrodonExoPlanet-BB / 50.0	0.26 ± 1.15
HAT-P-3b (LOW) 2021-04-09	Carmelo Falco GALHassin Robotic Telescope 2 (GRT2)	Giacometti-Fogale RC16 Andor Apogee Aspen CG16M / gpr / 40.0	-0.2 ± 1.15
HAT-P-3b (LOW) 2021-04-03	Andre Kovacs MicroObservatory Cecillia	152mm Maksutov Kodak KAF-1402ME / Clear / 60.0	-5.57 ± 4.32
HAT-P-3b (LOW) 2021-03-16	Fabio Mortari Hypatia Observatory	Ritchey Chretienne 250mm f/5.3 Sbig ST8-XE / R / 200.0	-0.92 ± 1.73
HAT-P-3b (LOW) 2021-03-16	Claudio Lopresti Claudio Lopresti	Mak-Newton CCD Sbig ST10xme / I / 240.0	-1.64 ± 1.87
HAT-P-3b (LOW) 2021-03-16	Martin Smith Heathwood Road	Celestron EdgeHD 800 Atik 414 ex / Clear / 30.0	-1.64 ± 2.02
HAT-P-3b (LOW) 2021-02-13	Leon Bewersdorff Observatory Kipshoven (BLEW)	SCT 200 / 1280 (Celestron C8 with reducer) QHY600M-PH / V / 30.0	-1.03 ± 1.58
HAT-P-3b (LOW) 2020-06-08	Taewoo Kim Deokheung Optical Astronomy Observatory	NYSC 1m Telescope FLI PL-16803 or PI SOPHIA-2048B / R / 60.0	0.24 ± 0.43
HAT-P-3b (LOW) 2020-05-28	Alberto Tomatis Alto-Observatory	RC STL 6303 / Lum / 60.0	3.05 ± 1.15
HAT-P-3b (LOW) 2020-05-10	Taewoo Kim Deokheung Optical Astronomy Observatory	NYSC 1m Telescope FLI PL-16803 or PI SOPHIA-2048B / R / 90.0	0.64 ± 0.58
HAT-P-3b (LOW) 2020-04-02	Fabio Mortari Hypatia Observatory	Newton 250mm f/4.9 Sbig ST8-XE / Lum / 120.0	3.95 ± 2.16
HAT-P-3b (LOW) 2020-04-02	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / R / 120.0	3.66 ± 0.86
HAT-P-3b (LOW) 2020-04-02	Mark Phillips Forthimage	OO Newtonian CCD Atik 460EX / R / 50.0	-0.52 ± 1.87
HAT-P-3b (LOW) 2020-04-02	Mauro Caló Cavallino	RC SBIG ST10 / Lum / 60.0	-0.8 ± 1.44
HAT-P-3b (LOW) 2020-03-28	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / R / 120.0	-1.7 ± 1.01
HAT-P-3b (LOW) 2020-03-10	Wonseok Kang Deokheung Optical Astronomy Observatory	NYSC 1m Telescope FLI PL-16803 or PI SOPHIA-2048B / R / 60.0	-0.51 ± 0.43
HAT-P-3b (LOW) 2019-06-17	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / V / 120.0	0.66 ± 1.44
HAT-P-3b (LOW) 2019-03-25	Mario Morales-Aimar Observatorio de Sencelles MPC K14	Reflector 10" SBIG ST7-XME / V / 130.0	-1.49 ± 1.3
HAT-P-3b (LOW) 2019-03-22	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 120.0	0.0 ± 0.72
HAT-P-3b (LOW) 2019-03-20	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / V / 120.0	0.92 ± 1.3
HAT-P-3b (LOW) 2019-03-17	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / R / 120.0	-2.62 ± 0.86
HAT-P-3b (LOW) 2019-02-21	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / R / 120.0	-1.47 ± 1.3
HAT-P-3b (LOW) 2019-02-19	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 60.0	1.76 ± 0.43
HAT-P-3b (LOW) 2019-02-19	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / R / 120.0	-0.98 ± 1.73
HAT-P-3b (LOW) 2016-03-21	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	2.77 ± 2.02
HAT-P-3b (LOW) 2016-03-21	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	0.32 ± 0.86
HAT-P-3b (LOW) 2016-03-18	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	-0.35 ± 2.02
HAT-P-3b (LOW) 2015-03-07	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / V / 60.0	-1.12 ± 1.3
HAT-P-3b (LOW) 2013-05-12	Alfonso Carreño Garceran Observatorio Zonalunar	Long Perng Atik 386L / Lum / 180.0	2.96 ± 2.45
HAT-P-3b (LOW) 2013-04-16	Claudio Lopresti Claudio Lopresti	Mak-Newton CCD Sbig ST10xme / R / 240.0	-1.59 ± 1.44
HAT-P-3b (LOW) 2013-04-13	Ramon Naves Montcabrer	Meade LX200 12" ACF Sbig ST8xme / R / 60.0	1.78 ± 1.73
HAT-P-3b (LOW) 2012-04-30	Ramon Naves Montcabrer	Meade LX200 12" ACF Sbig ST8xme / R / 120.0	-0.27 ± 1.73
Space Observations
Planet Observation Date	Mission		O-C minutes
HAT-P-3b (LOW) 2020-03-16	TESS		-0.27 ± 0.56
HAT-P-3b (LOW) 2020-03-13	TESS		0.56 ± 0.58
HAT-P-3b (LOW) 2020-03-10	TESS		-0.96 ± 0.6
HAT-P-3b (LOW) 2020-03-07	TESS		-0.3 ± 0.55
HAT-P-3b (LOW) 2020-03-02	TESS		-0.24 ± 0.59
HAT-P-3b (LOW) 2020-02-28	TESS		0.19 ± 0.58
HAT-P-3b (LOW) 2020-02-25	TESS		0.9 ± 0.62
HAT-P-3b (LOW) 2020-02-22	TESS		-0.7 ± 0.55
HAT-P-3b (LOW) 2019-10-03	TESS		-0.3 ± 0.56
HAT-P-3b (LOW) 2019-09-30	TESS		-1.02 ± 0.56
HAT-P-3b (LOW) 2019-09-27	TESS		-0.79 ± 0.58
HAT-P-3b (LOW) 2019-09-18	TESS		0.86 ± 0.68
HAT-P-3b (LOW) 2019-09-15	TESS		-1.09 ± 0.6
HAT-P-3b (LOW) 2019-09-12	TESS		-0.6 ± 0.6
Literature Mid-times
Planet Observation Date	Reference		O-C minutes
2018-03-22	Wang et al. 2021		0.96 ± 0.94
2017-05-10	Wang et al. 2021		1.54 ± 1.87
2017-05-07	Wang et al. 2021		-1.0 ± 1.44
2017-03-07	Wang et al. 2021		1.16 ± 2.88
2016-03-30	Wang et al. 2021		0.15 ± 3.46
2015-05-07	Mancini et al. 2018		0.05 ± 0.84
2010-05-27	Sada et al. 2012		1.23 ± 0.69
2010-05-27	Sada et al. 2012		0.93 ± 0.3
2010-04-08	Nascimbeni et al. 2011		-1.13 ± 0.2
2009-05-26	Gibson et al. 2010		-0.18 ± 0.73
2009-05-24	Gibson et al. 2010		0.07 ± 0.49
2009-05-15	Sada et al. 2012		1.98 ± 0.68
2009-05-15	Sada et al. 2012		0.01 ± 0.36
2009-04-27	Gibson et al. 2010		0.97 ± 0.58
2009-04-25	Gibson et al. 2010		-0.47 ± 0.94
2009-04-16	Chan et al. 2011		0.22 ± 0.46
2009-03-29	Gibson et al. 2010		0.57 ± 0.79
2009-03-15	Chan et al. 2011		-0.2 ± 0.55
2009-01-28	Gibson et al. 2010		-0.72 ± 0.53
2009-01-25	Gibson et al. 2010		0.53 ± 0.35
2008-04-07	Chan et al. 2011		1.12 ± 0.52
2008-03-09	Chan et al. 2011		0.18 ± 0.56
2007-04-28	Torres et al. 2007		-0.02 ± 4.18

HAT-P-3b (LOW)

Discovered by: Torres et al. 2007

ExoClock Observations

Space Observations

Literature Mid-times