exoclock

Kepler-18d (TTVs)

Discovered by: Cochran et al. 2011

The Star
Simbad
GAIA
2MASS
Kepler-18
DR2 2079295583282164992
J19521906+4444467
RA 19:52:19.0688 DEC +44:44:46.807
Parallax
2.28 mas
P.M. RA
-1.432 mas/y
P.M. DEC
-20.313 mas/y
MagV
13.767
MagR
13.93
MagI*
12.843
MagJ
12.189
MagH
11.873
MagK
11.756
MagG
13.539
MagGBP
14.003
MagGRP
12.938
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2455704.09996 ± 0.00025 BJDTDB
Period
14.8589223 ± 9.1e-06 days

Transit Parameters
Cochran et al. 2011
Rp/Rs
0.0578 ± 0.0007
a/Rs
22.5 +1.0 -1.0
i
88.07 +0.1 -0.1 deg
e
-
ω
- deg
DepthR*
3.62 mmag
Duration*
3.73 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Cochran et al. 2011
Teff
5345.0 +100.0 -100.0 K
Log(g)
4.31 +0.12 -0.12 cm/s2
Fe/H
0.19 +0.06 -0.06 dex
ExoClock Status
Observing Priority TTVs
Minimum aperture 37.58"
Total Observations (Recent) 82 (0)
O-C -
ExoClock Observations (Recent) 0 (0)
Space Observations (Recent) 82 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 0 (0)
Kepler Rp/Rs 0.05747 ± 0.0001
TESS Rp/Rs 0.0949 ± 0.0095

Kepler-18d


Space Observations

Planet
Observation Date
Mission O-C
minutes
Kepler-18d (TTVs)
2019-07-26
TESS8.29 ± 8.06
Kepler-18d (TTVs)
2013-04-19
KEPLER2.58 ± 1.3
Kepler-18d (TTVs)
2013-04-05
KEPLER3.48 ± 1.44
Kepler-18d (TTVs)
2013-03-21
KEPLER3.81 ± 1.22
Kepler-18d (TTVs)
2013-02-19
KEPLER0.69 ± 1.58
Kepler-18d (TTVs)
2013-02-04
KEPLER-0.5 ± 1.34
Kepler-18d (TTVs)
2013-01-05
KEPLER-3.96 ± 1.73
Kepler-18d (TTVs)
2012-12-22
KEPLER-3.51 ± 1.14
Kepler-18d (TTVs)
2012-11-22
KEPLER-8.04 ± 2.02
Kepler-18d (TTVs)
2012-11-07
KEPLER-5.42 ± 1.4
Kepler-18d (TTVs)
2012-10-23
KEPLER-2.94 ± 2.02
Kepler-18d (TTVs)
2012-10-08
KEPLER-5.07 ± 1.73
Kepler-18d (TTVs)
2012-09-23
KEPLER-3.36 ± 1.41
Kepler-18d (TTVs)
2012-09-09
KEPLER1.18 ± 1.2
Kepler-18d (TTVs)
2012-08-25
KEPLER1.42 ± 0.99
Kepler-18d (TTVs)
2012-08-10
KEPLER2.41 ± 1.73
Kepler-18d (TTVs)
2012-07-26
KEPLER4.71 ± 1.31
Kepler-18d (TTVs)
2012-07-11
KEPLER5.35 ± 1.87
Kepler-18d (TTVs)
2012-06-26
KEPLER4.81 ± 1.73
Kepler-18d (TTVs)
2012-06-11
KEPLER3.01 ± 1.25
Kepler-18d (TTVs)
2012-05-28
KEPLER1.53 ± 1.05
Kepler-18d (TTVs)
2012-05-13
KEPLER0.63 ± 1.31
Kepler-18d (TTVs)
2012-04-13
KEPLER-2.06 ± 1.28
Kepler-18d (TTVs)
2012-03-29
KEPLER-2.92 ± 1.87
Kepler-18d (TTVs)
2012-03-14
KEPLER-3.75 ± 1.58
Kepler-18d (TTVs)
2012-02-28
KEPLER-5.74 ± 2.02
Kepler-18d (TTVs)
2012-02-14
KEPLER-3.16 ± 1.17
Kepler-18d (TTVs)
2012-01-30
KEPLER-2.5 ± 1.58
Kepler-18d (TTVs)
2012-01-15
KEPLER-1.39 ± 1.4
Kepler-18d (TTVs)
2011-12-31
KEPLER-1.55 ± 1.31
Kepler-18d (TTVs)
2011-12-16
KEPLER0.01 ± 1.44
Kepler-18d (TTVs)
2011-11-16
KEPLER3.7 ± 1.58
Kepler-18d (TTVs)
2011-11-02
KEPLER1.66 ± 1.18
Kepler-18d (TTVs)
2011-10-18
KEPLER6.07 ± 1.58
Kepler-18d (TTVs)
2011-10-03
KEPLER0.66 ± 1.34
Kepler-18d (TTVs)
2011-09-18
KEPLER3.0 ± 1.31
Kepler-18d (TTVs)
2011-09-03
KEPLER0.98 ± 1.73
Kepler-18d (TTVs)
2011-08-19
KEPLER0.69 ± 1.22
Kepler-18d (TTVs)
2011-07-21
KEPLER-0.06 ± 1.34
Kepler-18d (TTVs)
2011-06-21
KEPLER-3.03 ± 1.22
Kepler-18d (TTVs)
2011-06-06
KEPLER-5.45 ± 1.44
Kepler-18d (TTVs)
2011-05-22
KEPLER-3.9 ± 1.3
Kepler-18d (TTVs)
2011-04-08
KEPLER-0.8 ± 1.14
Kepler-18d (TTVs)
2011-03-24
KEPLER-1.04 ± 0.92
Kepler-18d (TTVs)
2011-03-09
KEPLER4.54 ± 1.58
Kepler-18d (TTVs)
2011-02-22
KEPLER-0.9 ± 1.35
Kepler-18d (TTVs)
2011-02-07
KEPLER4.6 ± 1.58
Kepler-18d (TTVs)
2011-01-23
KEPLER5.58 ± 1.01
Kepler-18d (TTVs)
2011-01-08
KEPLER3.08 ± 2.74
Kepler-18d (TTVs)
2010-12-10
KEPLER2.86 ± 1.73
Kepler-18d (TTVs)
2010-11-25
KEPLER1.02 ± 2.16
Kepler-18d (TTVs)
2010-10-26
KEPLER-3.38 ± 2.02
Kepler-18d (TTVs)
2010-10-11
KEPLER-2.63 ± 2.16
Kepler-18d (TTVs)
2010-09-26
KEPLER-4.8 ± 1.12
Kepler-18d (TTVs)
2010-09-11
KEPLER-5.39 ± 1.32
Kepler-18d (TTVs)
2010-08-28
KEPLER-5.23 ± 1.37
Kepler-18d (TTVs)
2010-08-13
KEPLER-4.08 ± 1.44
Kepler-18d (TTVs)
2010-07-29
KEPLER-3.33 ± 1.58
Kepler-18d (TTVs)
2010-07-14
KEPLER2.75 ± 2.3
Kepler-18d (TTVs)
2010-06-29
KEPLER-3.12 ± 2.02
Kepler-18d (TTVs)
2010-06-14
KEPLER-0.64 ± 1.32
Kepler-18d (TTVs)
2010-05-30
KEPLER1.84 ± 1.25
Kepler-18d (TTVs)
2010-05-16
KEPLER3.45 ± 2.02
Kepler-18d (TTVs)
2010-05-01
KEPLER4.48 ± 1.05
Kepler-18d (TTVs)
2010-04-16
KEPLER6.07 ± 1.4
Kepler-18d (TTVs)
2010-04-01
KEPLER2.54 ± 0.88
Kepler-18d (TTVs)
2010-03-17
KEPLER0.64 ± 1.4
Kepler-18d (TTVs)
2010-03-02
KEPLER0.32 ± 1.15
Kepler-18d (TTVs)
2010-02-01
KEPLER-1.65 ± 1.73
Kepler-18d (TTVs)
2010-01-17
KEPLER-4.79 ± 1.44
Kepler-18d (TTVs)
2010-01-02
KEPLER-4.09 ± 1.41
Kepler-18d (TTVs)
2009-12-03
KEPLER-2.1 ± 1.58
Kepler-18d (TTVs)
2009-11-03
KEPLER8.91 ± 5.04
Kepler-18d (TTVs)
2009-10-05
KEPLER1.17 ± 1.31
Kepler-18d (TTVs)
2009-09-20
KEPLER1.95 ± 1.58
Kepler-18d (TTVs)
2009-09-05
KEPLER1.69 ± 1.44
Kepler-18d (TTVs)
2009-08-21
KEPLER4.03 ± 1.73
Kepler-18d (TTVs)
2009-07-22
KEPLER1.26 ± 1.04
Kepler-18d (TTVs)
2009-07-08
KEPLER4.7 ± 2.02
Kepler-18d (TTVs)
2009-06-23
KEPLER-0.59 ± 1.58
Kepler-18d (TTVs)
2009-06-08
KEPLER-2.15 ± 1.22
Kepler-18d (TTVs)
2009-05-09
KEPLER-3.65 ± 1.3
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