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 - Verified True
Kokori et al. 2021
Mid-time
2455015.49844 ± 0.00012 BJDTDB
Period
3.5247499 ± 3e-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.
**Adjusted to produce a duration that matches the observations.

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
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		MEDIUM
9 (2)

16

-0.4±0.4

HD209458b


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2022-07-23 Eric Miny
BLOIS SOLOGNE ASTRONOMIE OBSERVATORY		 Newton T305
QSI 683WS / H / 60.0		 -2.0 ± 1.6
2022-07-23 Matthieu Bachschmidt
Gonachon		 Celestron C11
SBIG ST8XME / Astrodon ExoPlanet-BB / 10.0		 -3.0 ± 1.0
2020-10-09 Martin Smith
Heathwood Road		 Skywatcher 120mm ED Apochromatic
Atik 414 ex / R / 1.2		 -1.9 ± 4.3 - Data available
2020-08-10 Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		 Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / Lum / 45.0		 2.2 ± 0.9 - Data available
2020-08-03 Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)		 Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / Lum / 60.0		 -2.4 ± 1.4 - Data available
2018-08-29 Anaël Wünsche
Observatoire des Baronnies Provençales		 Astelco
FLIPL230 / Astrodon ExoPlanet-BB / 30.0		 2.0 ± 1.0 - Data available
2018-08-29 Yves Jongen
Rasteau Observatory		 Plane Wave CDK 17"
SBIG STXL 11002 / V / 120.0		 -0.3 ± 1.6 - Data available
2009-10-30 Filip Walter
Stefanik Observatory		 Meade SCT
SBIG ST-10XME / Clear / 60.0		 -2.9 ± 1.6 - Data available
2008-11-22 Alessandro Marchini
Astronomical Observatory, University of Siena		 Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 120.0		 -2.7 ± 2.2


Literature Mid-times

Observation
Date		 Mid-time Time format Reference O-C
minutes
2012-09-25 2456196.28934 ± 0.00018 BJD_TDB Deming et al. 2013 -0.5 ± 0.3
2005-09-13 2453626.74617 ± 0.00079 HJD_UTC Miller-Ricci et al. 2008 -0.1 ± 1.1
2005-09-09 2453623.22186 ± 0.00075 HJD_UTC Miller-Ricci et al. 2008 0.5 ± 1.1
2005-09-06 2453619.69667 ± 0.00065 HJD_UTC Miller-Ricci et al. 2008 -0.1 ± 0.9
2005-09-02 2453616.17165 ± 0.00062 HJD_UTC Miller-Ricci et al. 2008 -0.5 ± 0.9
2005-08-30 2453612.6469 ± 0.00056 HJD_UTC Miller-Ricci et al. 2008 -0.5 ± 0.8
2005-08-26 2453609.12212 ± 0.00056 HJD_UTC Miller-Ricci et al. 2008 -0.5 ± 0.8
2005-08-23 2453605.59805 ± 0.00055 HJD_UTC Miller-Ricci et al. 2008 0.5 ± 0.8
2005-08-19 2453602.07253 ± 0.00062 HJD_UTC Miller-Ricci et al. 2008 -0.6 ± 0.9
2005-08-16 2453598.5493 ± 0.00053 HJD_UTC Miller-Ricci et al. 2008 1.6 ± 0.8
2005-08-12 2453595.02365 ± 0.0006 HJD_UTC Miller-Ricci et al. 2008 0.2 ± 0.9
2005-08-08 2453591.49958 ± 0.00051 HJD_UTC Miller-Ricci et al. 2008 1.3 ± 0.7
2005-08-05 2453587.9748 ± 0.00074 HJD_UTC Miller-Ricci et al. 2008 1.2 ± 1.1
2004-08-28 2453246.07367 ± 0.00061 HJD_UTC Miller-Ricci et al. 2008 0.6 ± 0.9
2004-08-25 2453242.54809 ± 0.00049 HJD_UTC Miller-Ricci et al. 2008 -0.5 ± 0.7
2004-08-17 2453235.49852 ± 0.00068 HJD_UTC Miller-Ricci et al. 2008 -0.6 ± 1.0
© 2019-2022 ExoClock Project - Privacy policy