ExoClock

The Star
Simbad GAIA 2MASS	CoRoT-2 DR2 4287820848378092672 J19270649+0123013
RA	19:27:06.4944		DEC	+01:23:01.357
Parallax 4.661 mas		P.M. RA -3.409 mas/y		P.M. DEC -10.936 mas/y
Mag_V 12.568	Mag_R 12.204	Mag_I 11.49	Mag_J 10.783	Mag_H 10.438	Mag_K 10.31
Mag_G 12.249		Mag_{G_BP} 12.739		Mag_{G_RP} 11.616
^*Calculated from GAIA magnitudes.

Ephemeris - Verified
Kokori et al. 2021
Mid-time 2457347.04314 ± 0.00012 BJD_TDB
Period 1.742997 ± 1.1e-07 days
Transit Parameters
Alonso et al. 2008
R_p/R_s 0.1667 ± 0.0006	a/R_s 6.7 +0.03 -0.03		i 87.84 +0.1 -0.1 deg
R_p/R_s 0.1667 ± 0.0006	e -		ω - deg
Depth_R^* 36.99 mmag		Duration^* 2.28 hours
^Calculated from the other parameters, using PyLightcurve. ^*Adjusted to produce a duration that matches the observations.
Limb Darkening Parameters
Chavero et al. 2010
T_eff 5696.0 +70.0 -70.0 K	Log(g) 4.42 +0.12 -0.12 cm/s²		Fe/H 0.03 +0.06 -0.06 dex

ExoClock Status
Observing Priority ExoClock Observations (Recent) Space Observations Literature Mid-times ETD Observations O-C minutes		LOW 38 (5) 7 0.28±0.1

ExoClock Observations

Observation Date	Observer Observatory	Telescope Camera / Filter / Exp [s]	O-C minutes
2022-07-24	Jean-Claude MARIO Observatoire de la Cabergue	T 520 Cassegrain "Arp 83" STL 11000 - KAI 11000 / Clear / 180.0	-1.5 ± 1.0
2022-07-18	Martin Mifsud Manikata Observatory	Meade OTA SBig ST10XME / Lum / 120.0	-1.5 ± 1.2
2022-07-11	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / Clear / 60.0	-0.5 ± 1.0
2022-06-18	Sauro Gaudenzi MicroObservatory Cecilia	MicroObservatory robotic telescope KAF-1402ME / Clear / 60.0	-1.4 ± 4.3
2021-10-12	Mike Miller Georgetown Observatory	Meade 10 inch ACF f8 f5.6 QSI 660 / V / 120.0	5.4 ± 1.2
2021-08-05	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / Lum / 120.0	1.5 ± 0.4
2021-07-16	Martin Crow Burnham Observatory	Celestron C9.25 SX694 mono / R / 120.0	0.6 ± 0.7
2021-07-16	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Lum / 120.0	0.3 ± 0.6
2021-07-03	Kevin Hills Tacande	ASA 0.5m f/3 astrograph. QHY 600M with IMX 455 chip / R / 90.0	-0.6 ± 0.4
2021-06-26	Enrique Arce Vallbona Observatory	Newton 10" f4 Sbig ST7-XME / V / 120.0	1.4 ± 1.0
2021-06-10	Andre Kovacs MicroObservatory Cecillia	152mm Maksutov Kodak KAF-1402ME / Clear / 60.0	-2.9 ± 2.4
2020-08-19	Iakovos Strikis Elizabeth Observatory of Athens	Sky Watcher Quattro SBIG STF-8300mm / Lum / 80.0	-3.8 ± 2.0	- Data available
2020-08-18	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / Clear / 120.0	0.2 ± 0.4	- Data available
2020-08-05	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0	0.2 ± 1.0	- Data available
2020-07-08	Nikolaos Paschalis Nunki Observatory	Officina Stellare RILA 400 SBIG STXL 11002 / R / 60.0	0.4 ± 1.3	- Data available
2020-07-08	Francois Regembal HRTobs	Astrosib RC360 SBIG STX 16803 / Lum / 60.0	0.1 ± 1.2	- Data available
2020-07-08	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0	-0.6 ± 0.4	- Data available
2020-07-08	Mauro Caló Cavallino	RC SBIG ST10 / Lum / 90.0	-1.0 ± 0.7	- Data available
2020-07-08	Alberto Tomatis Alto-Observatory	RC STL 6303 / Lum / 120.0	-1.5 ± 0.6	- Data available
2020-07-02	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0	0.1 ± 0.4	- Data available
2020-06-25	Adrian Jones Private Observatory (I64)	Meade ACF 30cm QSI 583 / R / 90.0	-0.4 ± 0.6	- Data available
2020-06-25	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0	-1.7 ± 0.7	- Data available
2020-06-23	Martin Fowler MicroObservatory Cecilia	MicroObservatory robotic telescope KAF 1402ME / Clear / 60.0	0.2 ± 1.9	- Data available
2020-06-09	Roger Dymock MicroObservatory located at Whipple Observatory	Maksutov reflector KAF 1402ME / Clear / 60.0	2.5 ± 5.8	- Data available
2020-04-09	Yves Jongen Deep Sky Chile	Plane Wave CDK 17" Moravian 4G / Clear / 120.0	0.2 ± 0.6	- Data available
2019-09-28	Lionel Rousselot lroussel	Newton ZWO 1600 monochrome / Clear / 180.0	0.1 ± 0.7	- Data available
2019-07-08	Nick Sioulas NOAK Observatory	SKYWATCHER ATIK 460exm / R / 120.0	-0.8 ± 1.0	- Data available
2019-07-08	Giuseppe Marino Gruppo Astrofili Catanesi	Newtonian SBIG ST-7 XME / Clear / 300.0	-2.2 ± 0.6
2019-07-01	Yves Jongen Rasteau Observatory	Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0	2.5 ± 0.6	- Data available
2019-07-01	Fabio Salvaggio WBRO - K49	C9.25" SBIG ST8-XME / V / 300.0	0.8 ± 0.7
2018-10-04	Lionel Rousselot lroussel	Newton ZWO 1600 monochrome / Clear / 120.0	0.4 ± 0.9	- Data available
2018-09-27	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 180.0	-0.6 ± 1.0	- Data available
2017-08-29	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 120.0	0.5 ± 0.6	- Data available
2016-08-28	Nikolaos Paschalis Nunki Observatory	Officina Stellare RILA 400 SBIG STXL 11002 / Rc / 60.0	-0.7 ± 1.3	- Data available
2016-08-21	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	3.4 ± 0.9	- Data available
2016-08-14	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Lum / 60.0	2.4 ± 0.3	- Data available
2016-08-07	Anaël Wünsche Observatoire des Baronnies Provençales	CDK Planewave SBIG STL11K / Clear / 120.0	2.6 ± 0.7	- Data available
2015-08-28	Anaël Wünsche Observatoire des Baronnies Provençales	Astelco FLIPL230 / Clear / 120.0	-1.6 ± 0.4	- Data available

Literature Mid-times

Observation Date	Mid-time	Time format	Reference	O-C minutes
2017-10-03	2458030.3008 ± 0.0007	BJD_TDB	Öztürk et al. 2019	4.1 ± 1.0
2017-09-12	2458009.3792 ± 0.0005	BJD_TDB	Öztürk et al. 2019	-4.0 ± 0.7
2017-07-20	2457955.3477 ± 0.0004	BJD_TDB	Öztürk et al. 2019	-2.0 ± 0.6
2017-07-06	2457941.4051 ± 0.0008	BJD_TDB	Öztürk et al. 2019	-0.0 ± 1.2
2017-06-22	2457927.4596 ± 0.0004	BJD_TDB	Öztürk et al. 2019	-2.2 ± 0.6
2016-09-11	2457643.3528 ± 0.0003	BJD_TDB	Öztürk et al. 2019	0.2 ± 0.4
2007-05-17	2454237.53562 ± 0.00014	BJD_UTC	Alonso et al. 2008	-0.2 ± 0.2

CoRoT-2b

Discovered by: Alonso et al. 2008

ExoClock Observations

Literature Mid-times