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HAT-P-28b

Discovered by: Buchhave et al. 2011

The Star
Simbad GAIA 2MASS	HAT-P-28 DR2 363702817083391232 J00520018+3443422
RA	00:52:00.1877		DEC	+34:43:42.203
Parallax 2.463 mas		P.M. RA 25.519 mas/y		P.M. DEC 2.859 mas/y
Mag_V 13.03	Mag_R 13.24	Mag_I^* 12.142	Mag_J 11.561	Mag_H 11.206	Mag_K 11.104
Mag_G 12.872		Mag_{G_BP} 13.3		Mag_{G_RP} 12.275
^* calculated from GAIA magnitudes

Ephemeris - Not verified
Buchhave et al. 2011
Mid-time 2455417.5991 ± 0.0005 BJD_TDB
Period 3.257215 ± 7e-06 days
Transit Parameters
Buchhave et al. 2011
R_p/R_s 0.113 ± 0.0024		a/R_s 8.4 +0.6 -0.6		i 88.0 +0.9 -0.9 deg
R_p/R_s 0.113 ± 0.0024		e 0.05 +0.03 -0.03		ω 233.0 +90.0 -90.0 deg
Depth_R^* 16.75 mmag			Duration^* 3.31 hours
^* calculated from the other parameters, using PyLightcurve
Limb Darkening Parameters
Buchhave et al. 2011
T_eff 5680.0 +90.0 -90.0 K		Log(g) 4.36 +0.06 -0.06 cm/s²		Fe/H 0.12 +0.08 -0.08 dex

ExoClock Status
Observing Priority Total Observations (Recent) O-C minutes Total Literature Mid-times		LOW 9 (3) -3.0±0.3 1

ExoClock Observations

Obs. Date	O-C (min)	Observer Observatory	Telescope Camera / Filter / Exp [s]
2020-09-21	-5.9 ± 1.0	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0
2020-09-08	-1.1 ± 0.9	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 120.0
2020-08-26	-3.2 ± 1.7	Dim Stouraitis Galilaios	SCT SXVF-H9 Starlight-Xpress / R / 70.0
2019-12-03	-5.9 ± 0.9	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Clear / 60.0
2019-10-25	-2.6 ± 3.2	Nikolaos Paschalis Nunki Observatory	Officina Stellare RILA 400 SBIG STXL 11002 / Rc / 60.0
2019-10-02	-1.4 ± 1.6	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0
2018-12-26	-1.4 ± 1.4	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0
2018-10-12	-2.1 ± 0.6	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Clear / 60.0
2017-11-17	-2.9 ± 1.2	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 120.0

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