exoclock

TrES-4b (LOW)

Discovered by: Mandushev et al. 2007

The Star
Simbad
GAIA
2MASS		 TYC 2620-648-1
DR2 4609062308806929152
J17531304+3712426
RA 17:53:13.0490 DEC +37:12:42.586
Parallax
1.91 mas		 P.M. RA
-6.482 mas/y		 P.M. DEC
-20.855 mas/y
MagV
11.592		 MagR
11.28		 MagI
10.991		 MagJ
10.583		 MagH
10.35		 MagK
10.33
MagG
11.473		 MagGBP
11.742		 MagGRP
11.057
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2457482.75059 ± 0.00025 BJDTDB
Period
3.55392889 ± 4.4e-07 days
Transit Parameters
Sozzetti et al. 2015
Rp/Rs
0.1045 ± 0.0007		 a/Rs
6.14 +0.24 -0.19
 i
83.1 +0.5 -0.4 deg
e
-		 ω
- deg
DepthR*
12.05 mmag		 Duration*
3.67 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Torres et al. 2008
Teff
6200.0 +75.0 -75.0 K
 Log(g)
4.06 +0.02 -0.02 cm/s2
 Fe/H
0.14 +0.09 -0.09 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 62 (14)
O-C -1.81 ± 0.61 minutes
ExoClock Observations (Recent) 31 (14)
Space Observations (Recent) 20 (0)
ETD Observations (Recent) 5 (0)
Literature Mid-times (Recent) 6 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.09734 ± 0.00042

TrES-4b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
TrES-4b (LOW)
2024-08-05		Dim Stouraitis
Galilaios		SCT
SXVF-H9 Starlight-Xpress / R / 90.0		6.12 ± 3.89
TrES-4b (LOW)
2024-08-05		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 90.0		2.23 ± 1.73
TrES-4b (LOW)
2024-08-05		Guillaume Biesse
Observatoire de la coline Tossius		WH300 F4
ASI 533 MM / rpr / 120.0		-0.21 ± 3.74
TrES-4b (LOW)
2024-08-05		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		-2.09 ± 1.28
TrES-4b (LOW)
2024-08-05		Gunther Fleerackers
gufle		Ritchey-Chrétien
QHY294M / V / 240.0		-5.25 ± 2.74
TrES-4b (LOW)
2024-08-05		Michael Irzyk
melun		C14
altair 2600 / AstrodonExoPlanet-BB / 50.0		-8.28 ± 1.58
TrES-4b (LOW)
2024-07-19		Grant Young
Grant		iOptron RC8
asi183mc pro / Lum / 150.0		3.88 ± 5.9
TrES-4b (LOW)
2024-07-04		Deborah Smith
El Olivar, Gergal, Spain		Newtonian 8"
QHY9 / R / 100.0		8.66 ± 6.77
TrES-4b (LOW)
2024-07-04		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 52.0		5.06 ± 2.16
TrES-4b (LOW)
2024-07-04		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-0.99 ± 2.74
TrES-4b (LOW)
2024-07-04		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / V / 120.0		-3.01 ± 1.58
TrES-4b (LOW)
2024-07-04		Ian Sharp
PixelSkies		Celestron C11 Edge HD
Starlight Xpress Trius Pro SX694 / R / 90.0		-4.02 ± 2.74
TrES-4b (LOW)
2024-06-02		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 52.0		-1.48 ± 3.17
TrES-4b (LOW)
2024-05-26		Antonio Ferretti
Anxanum Observatory		Meade LX200 ACF
QHY 268M / R / 59.0		-1.69 ± 3.74
TrES-4b (LOW)
2022-08-11		Alvaro Fornas
Centro Astronómico Alto Turia (CAAT). MPC J57		Planewave CDK 17"
Sbig STXL 11002 / V / 180.0		-0.37 ± 2.59
TrES-4b (LOW)
2022-08-11		Eric Miny
BLOIS SOLOGNE ASTRONOMIE OBSERVATORY		Newton T305
QSI 683WS / Lum / 60.0		-4.11 ± 3.17
TrES-4b (LOW)
2022-08-11		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		-4.54 ± 1.44
TrES-4b (LOW)
2022-07-21		Po-Jian Chiu
zhshs obs		Takahashi FS-152
ZWO ASI6200MM / Lum / 60.0		-2.71 ± 2.59
TrES-4b (LOW)
2022-07-10		Dominique DANIEL
La Montjoie		Celestron C8
Camera CMOS ZWO ASI2600MC pro (color) / Clear / 180.0		0.29 ± 4.32
TrES-4b (LOW)
2022-05-22		Bryan Martin
Tiger Butte Obseratory		AG Opitcal
ZWO ASI 294 / AstrodonExoPlanet-BB / 45.0		3.18 ± 5.76
TrES-4b (LOW)
2022-05-08		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 40.0		-7.02 ± 3.02
TrES-4b (LOW)
2022-04-06		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
FLI Kepler CMOS 4040 / R / 120.0		6.46 ± 1.73
TrES-4b (LOW)
2022-04-06		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 90.0		-3.91 ± 4.32
TrES-4b (LOW)
2020-09-17		John Savage
Z42 Rushay Farm Observatory		Celestron 14Edge
ZWO ASI6200MM / R / 120.0		-2.34 ± 2.3
TrES-4b (LOW)
2020-06-13		Marc Deldem
Les Barres Observatory		Celestron C8
SBIG ST8-XME / Clear / 180.0		2.96 ± 2.16
TrES-4b (LOW)
2020-05-23		Taewoo Kim
Deokheung Optical Astronomy Observatory		NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 90.0		-6.87 ± 1.44
TrES-4b (LOW)
2020-04-11		Alberto Tomatis
Alto-Observatory		RC
STL 6303 / Lum / 120.0		3.42 ± 2.3
TrES-4b (LOW)
2019-03-17		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 120.0		-5.97 ± 2.88
TrES-4b (LOW)
2018-06-19		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		-1.22 ± 1.15
TrES-4b (LOW)
2018-05-19		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0		-7.18 ± 1.87
TrES-4b (LOW)
2016-07-26		Anaël Wünsche
Observatoire des Baronnies Provençales		Astelco
FLIPL230 / Lum / 60.0		-0.31 ± 1.44

Space Observations
Planet
Observation Date		 Mission O-C
minutes
TrES-4b (LOW)
2021-07-20		TESS1.19 ± 1.37
TrES-4b (LOW)
2021-07-17		TESS0.46 ± 1.44
TrES-4b (LOW)
2021-07-13		TESS2.65 ± 1.4
TrES-4b (LOW)
2021-07-06		TESS-0.56 ± 1.4
TrES-4b (LOW)
2021-07-02		TESS0.63 ± 1.58
TrES-4b (LOW)
2021-06-29		TESS2.26 ± 1.58
TrES-4b (LOW)
2021-06-25		TESS-1.3 ± 1.58
TrES-4b (LOW)
2020-07-01		TESS1.32 ± 1.43
TrES-4b (LOW)
2020-06-28		TESS-0.95 ± 2.02
TrES-4b (LOW)
2020-06-24		TESS0.39 ± 1.58
TrES-4b (LOW)
2020-06-21		TESS-0.58 ± 1.58
TrES-4b (LOW)
2020-06-17		TESS1.6 ± 1.41
TrES-4b (LOW)
2020-06-13		TESS3.4 ± 2.02
TrES-4b (LOW)
2020-06-10		TESS0.13 ± 1.44
TrES-4b (LOW)
2020-06-06		TESS-0.06 ± 1.4
TrES-4b (LOW)
2020-06-03		TESS0.4 ± 1.24
TrES-4b (LOW)
2020-05-30		TESS1.26 ± 1.58
TrES-4b (LOW)
2020-05-23		TESS2.09 ± 1.37
TrES-4b (LOW)
2020-05-20		TESS-0.63 ± 1.58
TrES-4b (LOW)
2020-05-16		TESS0.27 ± 1.44

ETD Observations
Planet
Observation Date		 Observer(s) ETD link O-C
minutes
TrES-4b (LOW)
2018-08-15		Yenal Ogmen1534405308-2.17 ± 2.3
TrES-4b (LOW)
2018-05-08		Joe Garlitz1525817988-0.72 ± 1.58
TrES-4b (LOW)
2013-06-29		Anthony Ayiomamitis1372593083-4.73 ± 1.87
TrES-4b (LOW)
2010-08-02		Ken Hose1280810630-2.66 ± 2.88
TrES-4b (LOW)
2010-04-07		Jaroslav Trnka1270930868-2.73 ± 2.74

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2010-05-05 Chan et al. 2011 -2.76 ± 1.51
2010-04-28 Chan et al. 2011 0.52 ± 0.89
2009-05-04 Chan et al. 2011 2.17 ± 1.64
2009-04-02 Chan et al. 2011 -1.05 ± 0.71
2008-06-11 Chan et al. 2011 3.31 ± 1.52
2007-05-10 Mandushev et al. 2007 0.64 ± 0.72
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