ExoClock

The Star
Simbad GAIA 2MASS	HAT-P-52 DR2 128623485853170432 J02505320+2901206
RA	02:50:53.2003		DEC	+29:01:20.522
Parallax 2.74 mas		P.M. RA 14.865 mas/y		P.M. DEC -27.458 mas/y
Mag_V 14.068	Mag_R^* 13.52	Mag_I 13.02	Mag_J 12.195	Mag_H 11.745	Mag_K 11.621
Mag_G 13.787		Mag_{G_BP} 14.368		Mag_{G_RP} 13.091
^*Calculated from GAIA magnitudes.

Ephemeris - Verified
Kokori et al. 2022
Mid-time 2458233.96601 ± 0.0002 BJD_TDB
Period 2.7535976 ± 3.6e-07 days
Transit Parameters
Hartman et al. 2015
R_p/R_s 0.116 ± 0.003	a/R_s 8.9 +0.5 -0.5		i 87.0 +0.9 -0.9 deg
R_p/R_s 0.116 ± 0.003	e -		ω - deg
Depth_R^* 17.25 mmag		Duration^* 2.41 hours
^Calculated from the other parameters, using PyLightcurve. ^*Adjusted based on the space observations.
Limb Darkening Parameters
Hartman et al. 2015
T_eff 5131.0 +50.0 -50.0 K	Log(g) 4.48 +0.05 -0.05 cm/s²		Fe/H 0.28 +0.08 -0.08 dex

ExoClock Status
Observing Priority		LOW
Minimum aperture		9.51"
Total Observations (Recent)		50 (7)
O-C		-1.46 ± 0.58 minutes
ExoClock Observations (Recent)		25 (7)
Space Observations (Recent)		23 (0)
ETD Observations (Recent)		0 (0)
Literature Mid-times (Recent)		2 (0)
Kepler R_p/R_s		-
TESS R_p/R_s		0.1137 ± 0.0014

Planet Observation Date	Observer Observatory	Telescope Camera / Filter / Exp [s]	O-C minutes
ExoClock Observations
HAT-P-52b (LOW) 2024-12-01	Lee YuHsien KMSH Observatory	C14HD QSI-660 / R / 70.0	1.29 ± 4.32
HAT-P-52b (LOW) 2024-11-28	Mario Morales-Aimar Observatorio de Sencelles MPC K14	Reflector 10" SBIG ST7-XME / Clear / 150.0	-0.01 ± 1.58
HAT-P-52b (LOW) 2024-10-24	David Bennett Rickford Observatory	GSO RC ZWO ASI2600MM Pro / Clear / 120.0	-0.64 ± 1.73
HAT-P-52b (LOW) 2024-10-10	Bryan Martin Tiger Butte Observatory Remote	AG Optical IDK ZWO ASI 294 / Lum / 210.0	-3.39 ± 2.45
HAT-P-52b (LOW) 2023-12-28	Dim Stouraitis Galilaios	SCT SXVF-H9 Starlight-Xpress / R / 130.0	-3.32 ± 4.61
HAT-P-52b (LOW) 2023-12-17	Marc Deldem Les Barres Observatory	Celestron C11 SBIG ST10-XME / Clear / 180.0	1.42 ± 1.44
HAT-P-52b (LOW) 2023-12-17	Mercedes Correa Calar Alto	CAHA 1.23m DLR MK-IV / I / 120.0	-4.06 ± 1.21
HAT-P-52b (LOW) 2023-11-14	Giuseppe Marino Gruppo Astrofili Catanesi	Newtonian SBIG ST-7 XME / Clear / 200.0	-0.92 ± 2.3
HAT-P-52b (LOW) 2023-11-14	Lluis Ribe Les Pedritxes	Celestron Moravian G3 16200 / R / 120.0	-1.93 ± 3.02
HAT-P-52b (LOW) 2023-11-03	Adrian Jones Private Observatory (I64)	Meade ACF 30cm QSI 583 / Lum / 200.0	-2.52 ± 3.6
HAT-P-52b (LOW) 2023-09-07	Paul De Backer Sorbus	Ritchey-Chrétien QHY268M / R / 240.0	1.15 ± 2.45
HAT-P-52b (LOW) 2023-09-07	Pierre Farissier Astroqueyras France	RC500 sbig / Lum / 180.0	-4.32 ± 2.02
HAT-P-52b (LOW) 2023-01-04	Mark van der Grijp Trevinca Observatory	William Optics FLT132 ZWO ASI2600mm Pro / Lum / 60.0	-0.17 ± 3.89
HAT-P-52b (LOW) 2022-10-30	Claudio Lopresti Claudio Lopresti	Meade LX200 12" CCD Sbig ST9xe / Lum / 180.0	4.22 ± 4.61
HAT-P-52b (LOW) 2022-10-17	David Arnot OSO PIRATE	PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 90.0	-1.27 ± 1.73
HAT-P-52b (LOW) 2022-09-22	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / Lum / 180.0	0.14 ± 1.58
HAT-P-52b (LOW) 2022-01-03	Vikrant Kumar Agnihotri Cepheid Observatory India	C11/f6.3 Schmidt-Cassegrain SX-35 TRIUS mono (KAF11002) / Lum / 120.0	-3.5 ± 3.02
HAT-P-52b (LOW) 2021-12-31	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0	-4.66 ± 1.01
HAT-P-52b (LOW) 2021-10-26	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Clear / 120.0	1.16 ± 0.72
HAT-P-52b (LOW) 2021-10-26	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave 2 ZWO ASI6200 / Clear / 120.0	-1.14 ± 1.44
HAT-P-52b (LOW) 2021-09-18	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / Lum / 120.0	0.39 ± 2.74
HAT-P-52b (LOW) 2021-08-08	Carmelo Falco GALHassin Robotic Telescope 2 (GRT2)	Giacometti-Fogale RC16 Andor Apogee Aspen CG16M / Lum / 90.0	-3.84 ± 1.58
HAT-P-52b (LOW) 2017-11-02	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 120.0	-4.26 ± 2.02
HAT-P-52b (LOW) 2016-12-26	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 120.0	1.39 ± 2.45
HAT-P-52b (LOW) 2016-12-04	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 120.0	0.36 ± 0.86
Space Observations
Planet Observation Date	Mission		O-C minutes
HAT-P-52b (LOW) 2021-11-04	TESS		2.9 ± 3.46
HAT-P-52b (LOW) 2021-11-01	TESS		0.59 ± 2.16
HAT-P-52b (LOW) 2021-10-29	TESS		-1.43 ± 2.02
HAT-P-52b (LOW) 2021-10-26	TESS		0.3 ± 2.74
HAT-P-52b (LOW) 2021-10-21	TESS		-3.6 ± 2.88
HAT-P-52b (LOW) 2021-10-18	TESS		0.43 ± 2.16
HAT-P-52b (LOW) 2021-10-15	TESS		-2.6 ± 2.45
HAT-P-52b (LOW) 2021-10-13	TESS		-3.9 ± 2.88
HAT-P-52b (LOW) 2021-10-10	TESS		-0.73 ± 4.03
HAT-P-52b (LOW) 2021-10-07	TESS		3.73 ± 3.17
HAT-P-52b (LOW) 2021-10-04	TESS		-2.32 ± 4.03
HAT-P-52b (LOW) 2021-10-02	TESS		2.14 ± 2.59
HAT-P-52b (LOW) 2021-09-23	TESS		-4.64 ± 3.46
HAT-P-52b (LOW) 2021-09-21	TESS		1.12 ± 2.45
HAT-P-52b (LOW) 2021-09-18	TESS		-1.05 ± 2.88
HAT-P-52b (LOW) 2021-09-12	TESS		1.54 ± 2.45
HAT-P-52b (LOW) 2021-09-10	TESS		3.55 ± 3.17
HAT-P-52b (LOW) 2021-09-07	TESS		-2.79 ± 2.88
HAT-P-52b (LOW) 2021-09-04	TESS		2.39 ± 2.88
HAT-P-52b (LOW) 2021-08-30	TESS		0.22 ± 3.02
HAT-P-52b (LOW) 2021-08-27	TESS		0.36 ± 2.3
HAT-P-52b (LOW) 2021-08-24	TESS		-2.23 ± 2.59
HAT-P-52b (LOW) 2021-08-21	TESS		1.37 ± 2.3
Literature Mid-times
Planet Observation Date	Reference		O-C minutes
2017-11-16	Wang et al. 2021		1.66 ± 1.38
2011-10-17	Hartman et al. 2015		-0.08 ± 0.59

HAT-P-52b (LOW)

Discovered by: Hartman et al. 2015

ExoClock Observations

Space Observations

Literature Mid-times