exoclock

HD17156b (HIGH)

Discovered by: Fischer et al. 2007

The Star
Simbad
GAIA
2MASS
HD 17156
DR2 545560867790611072
J02494447+7145115
RA 02:49:44.4866 DEC +71:45:11.632
Parallax
12.778 mas
P.M. RA
90.982 mas/y
P.M. DEC
-33.197 mas/y
MagV
8.16
MagR*
7.824
MagI*
7.509
MagJ
7.08
MagH
6.857
MagK
6.763
MagG
8.033
MagGBP
8.352
MagGRP
7.597
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2455499.305815 ± 8.2e-05 BJDTDB
Period
21.2164387 ± 1.1e-06 days

Transit Parameters
Nutzman et al. 2011
Rp/Rs
0.0745 ± 0.0003
a/Rs
23.2 +0.3 -0.3
i
86.49 +0.24 -0.2 deg
e
0.677 +0.003 -0.003
ω
121.7 +0.4 -0.4 deg
DepthR*
6.89 mmag
Duration*
3.13 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Barbieri et al. 2009
Teff
6100.0 +75.0 -75.0 K
Log(g)
4.22 +0.05 -0.05 cm/s2
Fe/H
0.0 +0.0 -0.0 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 5.0"
Total Observations (Recent) 17 (0)
O-C 0.39 ± 2.02 minutes
ExoClock Observations (Recent) 3 (0)
Space Observations (Recent) 3 (0)
ETD Observations (Recent) 3 (0)
Literature Mid-times (Recent) 8 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.07466 ± 0.00024

HD17156b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
HD17156b (HIGH)
2021-01-18
Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / I / 120.0
0.39 ± 2.02
HD17156b (HIGH)
2011-09-13
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 90.0
1.73 ± 1.44
HD17156b (HIGH)
2010-10-29
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 90.0
6.75 ± 1.73

Space Observations

Planet
Observation Date
Mission O-C
minutes
HD17156b (HIGH)
2020-05-30
TESS-0.5 ± 0.33
HD17156b (HIGH)
2019-12-12
TESS0.09 ± 0.29
HD17156b (HIGH)
2019-11-21
TESS0.4 ± 0.29

ETD Observations

Planet
Observation Date
Observer(s) ETD link O-C
minutes
HD17156b (HIGH)
2014-09-20
Paul Benni1411231166-1.16 ± 1.44
HD17156b (HIGH)
2012-12-01
Osamu Ohshima1354399979-1.88 ± 2.3
HD17156b (HIGH)
2010-10-29
Claudio Lopresti12884653264.59 ± 4.32

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2009-02-21 Nutzman et al. 2011 -0.35 ± 0.15
2008-12-19 Nutzman et al. 2011 -0.26 ± 0.16
2008-11-07 Nutzman et al. 2011 0.32 ± 0.12
2008-10-17 Barbieri et al. 2009 2.4 ± 2.95
2007-12-25 Winn et al. 2009 0.45 ± 0.65
2007-12-03 Gillon et al. 2008 -0.6 ± 1.11
2007-11-12 Narita et al. 2008 -3.08 ± 3.02
2007-10-01 Irwin et al. 2008 0.63 ± 2.88
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