exoclock
exoclock
HD209458b
Discovered by: Henry et al. 2000
The Star
Simbad
GAIA
2MASS		 HD 209458
DR2 1779546757669063552
J22031077+1853036
RA 22:03:10.7729 DEC +18:53:03.548
Parallax
20.675 mas		 P.M. RA
29.579 mas/y		 P.M. DEC
-17.89 mas/y
MagV
7.63		 MagR*
7.305		 MagI*
7.006		 MagJ
6.591		 MagH
6.366		 MagK
6.308
MagG
7.509		 MagGBP
7.813		 MagGRP
7.09
* calculated from GAIA magnitudes

Ephemeris - Not verified False
Knutson et al. 2007
Mid-time
2452826.62928 ± 9e-05 BJDTDB
Period
3.5247486 ± 4e-07 days
Transit Parameters
Torres et al. 2008
Rp/Rs
0.12086 ± 0.0001		 a/Rs
8.76 +0.04 -0.04
 i
86.71 +0.05 -0.05 deg
e
-		 ω
- deg
DepthR*
18.11 mmag		 Duration*
3.09 hours
* calculated from the other parameters, using PyLightcurve
Limb Darkening Parameters
Torres et al. 2008
Teff
6065.0 +50.0 -50.0 K
 Log(g)
4.36 +0.01 -0.01 cm/s2
 Fe/H
0.0 +0.05 -0.05 dex
ExoClock Status
Observing Priority
Total Observations (Recent)
O-C minutes
Total Literature Mid-times		 LOW
6 (0)
2.8±0.5
0
HD209458b


ExoClock Observations
Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2020-10-09 Martin Smith
Heathwood Road		 Skywatcher 120mm ED Apochromatic
Atik 414 ex / R / 1.2		 0.7 ± 4.3
2020-08-10 Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		 Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / Lum / 45.0		 4.8 ± 0.9
2020-08-03 Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		 Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / Lum / 60.0		 0.1 ± 1.4
2018-08-29 Anaël Wünsche
Observatoire des Baronnies Provençales		 Astelco
FLIPL230 / Astrodon ExoPlanet-BB / 30.0		 4.2 ± 1.0 - Data available
2018-08-29 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / V / 120.0		 1.9 ± 1.6
2009-10-30 Filip Walter
Stefanik Observatory		 Meade SCT
SBIG ST-10XME / Clear / 60.0		 -2.5 ± 1.6
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