ExoClock

The Star
Simbad GAIA 2MASS	G 139-21 DR2 4393265392167891712 J17151894+0457496
RA	17:15:18.9337		DEC	+04:57:50.064
Parallax 68.265 mas		P.M. RA 580.447 mas/y		P.M. DEC -749.588 mas/y
Mag_V 15.1	Mag_R 14.394	Mag_I 11.52	Mag_J 9.75	Mag_H 9.094	Mag_K 8.782
Mag_G 13.009		Mag_{G_BP} 14.932		Mag_{G_RP} 11.696
^*Calculated from GAIA magnitudes.

Ephemeris - Verified
Kokori et al. 2022
Mid-time 2455886.320526 ± 2.3e-05 BJD_TDB
Period 1.580404571 ± 4.2e-08 days
Transit Parameters
Berta et al. 2012
R_p/R_s 0.116 ± 0.0005	a/R_s 15.31 +0.21 -0.29		i 89.3 +0.4 -0.3 deg
R_p/R_s 0.116 ± 0.0005	e -		ω - deg
Depth_R^* 18.78 mmag		Duration^* 0.87 hours
^Calculated from the other parameters, using PyLightcurve. ^*Adjusted based on the space observations.
Limb Darkening Parameters
Charbonneau et al. 2009
T_eff 3026.0 +130.0 -130.0 K	Log(g) 4.99 +0.03 -0.03 cm/s²		Fe/H 0.0 +0.0 -0.0 dex

ExoClock Status
Observing Priority		LOW
Minimum aperture		13.24"
Total Observations (Recent)		92 (8)
O-C		0.77 ± 0.22 minutes
ExoClock Observations (Recent)		23 (8)
Space Observations (Recent)		0 (0)
ETD Observations (Recent)		0 (0)
Literature Mid-times (Recent)		69 (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
GJ1214b (LOW) 2023-07-27	Mario Morales Aimar Observatorio de Sencelles MPC K14	Reflector 10" SBIG ST7-XME / Clear / 350.0	-0.53 ± 2.02
GJ1214b (LOW) 2023-07-27	Enrique Arce Vallbona Observatory	Newton 10" f4 Sbig ST7-XME / Clear / 300.0	-1.62 ± 1.24
GJ1214b (LOW) 2023-07-08	Sacha Foschino Observatoire des Baronnies Provençales	Planewave 430mm SVO ASI 6200 MM Pro / Clear / 120.0	1.12 ± 0.79
GJ1214b (LOW) 2023-06-12	David Arnot OSO PIRATE	PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 125.0	1.12 ± 1.17
GJ1214b (LOW) 2023-06-01	Yannic Delisle Buthiers UAI 199	Custome made QHY268M Pro / R / 60.0	0.57 ± 3.31
GJ1214b (LOW) 2023-05-16	Marcelo Emilio Pico dos Dias	Boller & Chivens Ixon 4335 / R / 120.0	0.18 ± 0.37
GJ1214b (LOW) 2023-03-20	Magdalena Szkudlarek Deep Sky Chile - ROTUZ	PlaneWave CDK 20 QHY268M pro / R / 67.0	3.32 ± 2.3
GJ1214b (LOW) 2022-08-26	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Clear / 120.0	1.59 ± 0.43
GJ1214b (LOW) 2022-07-19	Ivo Peretto MarSEC Marana Space Explorer Center	R-C Moravia G2-1600 MkII / Clear / 180.0	0.3 ± 0.86
GJ1214b (LOW) 2022-07-12	David Arnot OSO PIRATE	PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 100.0	2.93 ± 1.58
GJ1214b (LOW) 2022-06-12	Adrian Jones Private Observatory (I64)	Meade ACF 30cm QSI 583 / Lum / 200.0	-0.98 ± 1.87
GJ1214b (LOW) 2022-05-20	Dim Stouraitis Galilaios	SCT SXVF-H9 Starlight-Xpress / R / 100.0	1.56 ± 2.74
GJ1214b (LOW) 2022-05-12	Robert Roth TURMX Observatory	Planewave CDK17 QHY600M / Lum / 120.0	2.31 ± 0.86
GJ1214b (LOW) 2022-05-05	David Arnot OSO PIRATE	PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 100.0	-0.22 ± 0.84
GJ1214b (LOW) 2021-06-30	Adam Popowicz Otivar dome2	Newton 12" ASA ASI ZWO 1600MM / R / 400.0	-1.55 ± 4.32
GJ1214b (LOW) 2021-06-11	Mario Morales Aimar Observatorio de Sencelles MPC K14	Reflector 10" SBIG ST7-XME / Clear / 240.0	2.56 ± 1.58
GJ1214b (LOW) 2021-03-23	Paul Benni Acton Sky Portal	C11 EdgeHD SBIG ST8XME / AstrodonExoPlanet-BB / 100.0	2.17 ± 0.43
GJ1214b (LOW) 2020-08-03	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / Clear / 120.0	3.14 ± 1.01
GJ1214b (LOW) 2020-05-15	Manfred Raetz privat observatory Herges-Hallenberg	SCT 280 /1790 (Celestron C11 with reducer) Moravian Instruments G2-1600 / Clear / 180.0	0.16 ± 1.3
GJ1214b (LOW) 2019-09-29	Xesco Rubia Stupa Observatory	TOA130NFB Moravian G4-16000 MKII / Lum / 180.0	3.13 ± 3.17
GJ1214b (LOW) 2018-07-07	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	0.53 ± 0.43
GJ1214b (LOW) 2015-07-19	Antonio Marino UAN c/o INAF-Osservatorio Astronomico di Capodimonte, Naples ITALY	SC11 CCD Atik 314L / Clear / 90.0	0.73 ± 3.02
GJ1214b (LOW) 2015-06-04	Ramon Naves Montcabrer	Meade LX200 12" ACF Sbig ST8xme / Clear / 180.0	-1.82 ± 2.02
Literature Mid-times
Planet Observation Date	Reference		O-C minutes
2017-07-28	Mallonn et al. 2019		0.16 ± 0.3
2017-06-30	Mallonn et al. 2019		0.12 ± 0.2
2017-06-22	Mallonn et al. 2019		-0.08 ± 0.36
2017-06-18	Mallonn et al. 2019		0.07 ± 0.22
2017-06-18	Mallonn et al. 2019		-0.43 ± 0.13
2017-06-17	Mallonn et al. 2019		0.18 ± 0.35
2017-06-11	Mallonn et al. 2019		0.01 ± 0.35
2017-06-07	Mallonn et al. 2019		0.16 ± 0.3
2017-06-07	Mallonn et al. 2019		-0.12 ± 0.32
2017-06-01	Mallonn et al. 2019		-0.4 ± 0.26
2017-05-30	Mallonn et al. 2019		-0.11 ± 0.22
2017-05-23	Mallonn et al. 2019		-0.03 ± 0.17
2017-05-19	Mallonn et al. 2019		0.4 ± 0.35
2017-05-19	Mallonn et al. 2019		0.03 ± 0.24
2017-05-19	Mallonn et al. 2019		-0.28 ± 0.33
2017-05-05	Mallonn et al. 2019		-0.13 ± 0.29
2017-05-04	Mallonn et al. 2019		-0.01 ± 0.23
2017-04-23	Mallonn et al. 2019		0.5 ± 0.29
2017-04-23	Mallonn et al. 2019		-0.05 ± 0.17
2017-04-18	Mallonn et al. 2019		-0.62 ± 0.6
2017-04-04	Mallonn et al. 2019		0.58 ± 0.29
2017-04-04	Mallonn et al. 2019		-0.14 ± 0.23
2017-03-27	Mallonn et al. 2019		0.08 ± 0.16
2011-11-08	Fraine et al. 2013		-0.15 ± 0.09
2011-11-06	Fraine et al. 2013		-0.24 ± 0.14
2011-08-25	Harpsøe et al. 2013		0.6 ± 0.39
2011-08-25	Harpsøe et al. 2013		0.27 ± 0.39
2011-08-25	Harpsøe et al. 2013		-0.68 ± 0.72
2011-08-10	Cáceres et al. 2014		1.0 ± 0.35
2011-06-14	Cáceres et al. 2014		1.92 ± 1.44
2011-06-03	Harpsøe et al. 2013		0.28 ± 0.24
2011-05-19	Fraine et al. 2013		-0.04 ± 0.08
2011-05-18	Cáceres et al. 2014		2.65 ± 1.35
2011-05-18	Fraine et al. 2013		-0.34 ± 0.1
2011-05-16	Fraine et al. 2013		-0.18 ± 0.07
2011-05-15	Fraine et al. 2013		-0.06 ± 0.11
2011-05-12	Fraine et al. 2013		0.02 ± 0.08
2011-05-10	Fraine et al. 2013		0.04 ± 0.1
2011-05-08	Fraine et al. 2013		0.04 ± 0.07
2011-05-07	Fraine et al. 2013		-0.11 ± 0.14
2011-05-05	Fraine et al. 2013		0.12 ± 0.09
2011-05-04	Fraine et al. 2013		-0.01 ± 0.07
2011-05-02	Fraine et al. 2013		-0.06 ± 0.08
2011-04-30	Fraine et al. 2013		-0.09 ± 0.1
2011-04-29	Fraine et al. 2013		-0.12 ± 0.08
2011-04-26	Fraine et al. 2013		-0.35 ± 0.24
2011-04-18	Fraine et al. 2013		0.17 ± 0.16
2011-03-30	Fraine et al. 2013		-0.3 ± 0.22
2011-03-11	Fraine et al. 2013		0.38 ± 0.13
2010-08-21	Harpsøe et al. 2013		0.12 ± 0.23
2010-08-06	Harpsøe et al. 2013		0.2 ± 0.26
2010-08-02	Harpsøe et al. 2013		0.22 ± 0.14
2010-07-18	Harpsøe et al. 2013		0.42 ± 0.29
2010-07-14	Harpsøe et al. 2013		0.19 ± 0.23
2010-07-07	Harpsøe et al. 2013		-0.24 ± 0.88
2010-07-06	Harpsøe et al. 2013		-0.35 ± 0.23
2010-06-29	Harpsøe et al. 2013		1.74 ± 0.6
2010-05-18	Berta et al. 2011		0.0 ± 0.1
2010-05-10	Berta et al. 2011		0.13 ± 0.16
2010-04-29	Cáceres et al. 2014		1.5 ± 0.16
2010-04-29	Harpsøe et al. 2013		0.83 ± 0.95
2010-04-29	Harpsøe et al. 2013		0.71 ± 1.34
2010-04-27	Fraine et al. 2013		0.06 ± 0.12
2010-04-26	Fraine et al. 2013		0.08 ± 0.1
2009-06-17	Berta et al. 2011		-0.16 ± 0.22
2009-06-01	Berta et al. 2011		-0.01 ± 0.13
2009-05-29	Berta et al. 2011		-0.04 ± 0.15
2009-05-15	Berta et al. 2011		0.2 ± 0.51
2009-05-15	Berta et al. 2011		-0.03 ± 0.09

GJ1214b (LOW)

Discovered by: Charbonneau et al. 2009

ExoClock Observations

Literature Mid-times