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Kepler-8 Overview

Kepler-8 1.05 R⦿ 6164.00 K
Kepler-8 b
1.416 RJup
Architecture
Kepler-8
Kepler-8
Kepler-8 b
Other Data
Bibliography 23
Exoplanet Archive Notes 1
Nearby Data 7
Discovery Data
Host Planet Method Year Reference Disposition
Kepler-8 Kepler-8 b Transit 2010 Jenkins et al. 2010 Confirmed Planet
Kepler-8 b
  • Orbital period, transit mid-point, transit duration, Rp/Rs and their errors taken from DR24 KOI table. Planet radius error propagated from stellar radius error in ref. and Rp/Rs error. (Morton et al. 2016)
RA
18h45m09.15s
Dec
+42d27m03.95s
Distance
1021.870±14.575 pc
Parallax
0.9497580±0.0138526 mas
Ecliptic Latitude
65.10597 deg
Ecliptic Longitude
290.06269 deg
Galactic Latitude
19.01274 deg
Galactic Longitude
71.65893 deg
Total Proper Motion
4.4248600±0.0262111 mas/yr
Proper Motion (RA)
2.19649±0.02333 mas/yr
Proper Motion (Dec)
3.8412000±0.0270868 mas/yr
Photometry
mV
13.598±0.069
mTESS
13.1448±0.0067
mJ
12.576±0.023
mH
12.324±0.018
mKs
12.293±0.016
mKep
13.563
mW1
12.261±0.023
mW2
12.267±0.023
mW3
12.258±0.260
mW4
9.395001
mGaia
13.529900±0.000264
mB
13.804±0.051
mg
---
mi
---
mr
---
mz
---
Abundances
(Hypatia Catalog)
[Fe/H] -0.03±0.04 dex
[C/H] -0.06±0.02 dex
[O/H] 0.04±0.06 dex
[Na/H] -0.26±0.04 dex
[Mg/H] -0.10±0.02 dex
[Al/H] -0.29±0.09 dex
[Si/H] -0.04±0.03 dex
[Ca/H] 0.04±0.01 dex
[Y/H] -0.04±0.10 dex
Mission
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Kepler Names
KOI
Kepler Stellar Data
Kepler Positional Probabilities
Q1-Q17 DR25 False Positive Probabilities
Kepler Certified False Positive
Q1-Q16 DR25 TCE
Stellar Hosts
Kepler Time Series
Kepler TCE Time Series
Source TICv8 Berger et al. 2018 Gaia DR2 Bonomo et al. 2017 Morton et al. 2016 Esteves et al. 2015 Batalha et al. 2013 Southworth 2011 Jenkins et al. 2010 Latham et al. 2005 KIC - SCPKEY Q1-Q17 DR25 Supplemental KOI Table Q1-Q17 DR25 KOI Table ExoFOP-TESS TOI Q1-Q17 DR24 KOI Table Q1-Q16 KOI Table Q1-Q12 KOI Table Q1-Q8 KOI Table Q1-Q6 KOI Table Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
6179.0±25.0 6181±124
6346.750+435.132-182.750
 6210±150
6258.000+89.271-87.418
 6213±150 6025 6213±150 6213±150 6164 6312 ---
6225 +112-137
6179±25
6225 +114-158
6225 +114-158
6225.00 +114.00-158.00
6025.00±112.00 6025
Metallicity
(dex)
-0.050±0.100 [M/H] --- --- -0.055±0.030 [Fe/H]
0.010+0.083-0.086
[Fe/H] 		-0.055±0.030 [Fe/H] --- -0.0550±0.0500 [Fe/H] -0.055±0.03 [Fe/H] -0.128 [Fe/H] 0.000 [Fe/H] --- -0.04±0.15 [Fe/H] ---
-0.040 +0.120-0.160
[Fe/H]
-0.040 +0.120-0.160
[Fe/H]
-0.040 +0.120-0.160
[Fe/H] 		--- ---
R✶
(R⦿)
1.5817
1.570+0.069-0.065
1.4644564+0.0881236-0.1818930
1.486+0.053-0.062
1.490+0.120-0.114
1.486+0.053-0.062
 1.56 1.495±0.037
1.486 +0.053-0.062
1.053 --- --- 1.451±0.11 1.58169996738434
1.451 +0.117-0.129
1.451 +0.117-0.129
1.4510 +0.1170-0.1290
1.5600±0.2100 1.56
log g
(log10(cm/s2))
4.1117 --- --- ---
4.180+0.055-0.052
 4.174±0.026 4.11 4.178±0.022 4.174±0.026 4.44 4.120 ---
4.169 +0.055-0.045
4.11
4.169 +0.055-0.048
4.169 +0.055-0.048
4.169 +0.055-0.048
4.110±0.100 4.11
M✶
(M⦿)
1.18 --- ---
1.213+0.067-0.063
1.230+0.065-0.057
1.213+0.067-0.062
 --- 1.230±0.070
1.213 +0.067-0.063
--- --- ---
1.132 +0.108-0.078
---
1.132 +0.088-0.098
1.132 +0.088-0.098
1.1320 +0.0880-0.0980
1.1400±0.0920 ---
L✶
(log10(L⦿))
0.5166171 ---
0.49625317+0.01908897-0.01996674
 --- --- --- --- ---
0.605 +0.053-0.062
--- --- --- --- --- --- --- --- --- ---
γ
(km/s)
--- --- --- --- --- --- --- --- -52.72±0.10 --- -52.30±0.18 --- --- --- --- --- --- --- ---
v sin i
(km/s)
--- --- --- 10.50±0.70 --- --- --- --- 10.5±0.7 --- 9.90 --- --- --- --- --- --- --- ---
Age
(Gyr)
--- --- --- 3.8±1.5
3.47+0.60-0.50
 --- ---
3.2+1.9-3.3
 3.84±1.5 --- --- --- --- --- --- --- --- 5.4±1.4 ---
ρ✶
(g/cm3)
0.4204102 --- --- --- --- --- --- 0.518±0.020 --- --- --- ---
0.65374 +0.01481-0.01458
---
0.68914 +0.01840-0.01254
0.68914 +0.01840-0.01254
0.68914 +0.01840-0.01254
--- ---
Print
Status
Confirmed Planet
Detected By
Orbital Brightness Modulation, Radial Velocity, Transit
Tools
Transit Prediction Service
TOI
Kepler Names
KOI
Transit
Source Esteves et al. 2015 GajdoĊĦ et al. 2019 Berger et al. 2018 Bonomo et al. 2017 Holczer et al. 2016 Morton et al. 2016 Southworth 2011 Jenkins et al. 2010 Q1-Q17 DR25 Supplemental KOI Table Q1-Q17 DR25 KOI Table ExoFOP-TESS TOI Q1-Q17 DR24 KOI Table Q1-Q16 KOI Table Q1-Q12 KOI Table Q1-Q8 KOI Table Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
6.854+0.018-0.017
 --- --- --- --- ---
6.9832+0.0889-0.0867
6.97 +0.20-0.24
 --- 7.541±0.171 --- 7.675±0.205 7.675±0.205 7.675±0.205 7.5±0.18
Teq
(K)
1680±40 --- --- --- --- --- 1662±41 1764±200 --- 1521 1566.70481260203 1521 1521 1521 1532
b
0.7191+0.0021-0.0023
 --- --- --- --- --- --- 0.724±0.020 --- 0.631±0.007 ---
0.6141 +0.0061-0.0094
0.6141 +0.0061-0.0094
0.6141 +0.0061-0.0094
0.64±0.1
S
(S⨁)
--- ---
1444.881+46.995-45.419
 --- --- --- --- --- ---
1264.67 +307.23-276.48
1423.86794067703
1264.67 +323.37-317.46
1264.67 +323.37-317.46
1264.67 +323.37-317.46
---
e
--- --- --- <0.18 --- --- --- 0 --- 0 --- 0 0 0 0
i
(deg)
83.978+0.036-0.033
 --- --- 84.07±0.33 --- --- 84.23±0.16 84.07±0.33 --- 85.2 --- 85.37 85.37 85.37 85.37
P
(days)
3.5224991±0.0000007 3.5224984671±0.0000001501 --- 3.52249905±0.00000083 3.52249865±0.00000005 3.522498573±1.94e-07 3.5225047±0.0000076
3.52254 +0.00003-0.00005
 3.522498429±1.98e-07 3.522498429±1.98e-07 3.52247509699986±0.00001512882900 3.522498573±1.94e-07 3.522498573±1.94e-07 3.522498573±1.94e-07 3.52249913±7.3e-07
Rp
(R⨁)
15.87+0.59-0.69
 ---
15.789+0.697-0.659
15.91+0.63-0.65
 ---
15.31+1.23-1.17
 15.48±0.41
15.906 +0.628-0.650
 --- 14.59±1.11 15.9014831830639±0.3171249300000
14.83 +1.19-1.32
14.83 +1.19-1.32
14.83 +1.19-1.32
15.9±2.1
Rp/R✶
0.095751+0.000190-0.000230
 --- --- --- ---
0.093582 +0.000117-0.000198
---
0.09809 +0.00040-0.00046
 ---
0.092086 +0.000141-0.000177
---
0.093582 +0.000117-0.000198
0.093582 +0.000117-0.000198
0.093582 +0.000117-0.000198
0.09328±0.00018
a
(au)
0.0474+0.0018-0.0021
 --- ---
0.04835+0.00083-0.00089
 --- --- 0.0485±0.0012
0.0483 +0.0006-0.0012
 --- .0473 --- .0473 .0473 .0473 .047
δ
(%)
--- --- --- --- 0.9370 --- --- --- --- 0.91457±0.00066 0.860232564504174±0.020879324000000 0.93793±0.00066 0.93793±0.00066 0.93793±0.00066 0.91650
T14
(hours)
--- --- --- --- 3.3119 3.19061±0.00633 --- --- --- 3.19843±0.00653 3.28049551896563±0.09728570000000 3.19061±0.00633 3.19061±0.00633 3.19061±0.00633 3.1984
TC
(days)
2454954.11931±0.00002 2454954.11945000±0.00003549 --- 2455003.433596±0.000064 2454954.119425±0.000045 2454954.1194294±0.0000464 2454954.11844±0.00018
2454954.1182 +0.0003-0.0004
 2454954.119±4.71e-05 2454954.119±4.71e-05 2459445.304166±0.001682 2454954.119±4.64e-05 2454954.119±4.64e-05 2454954.119±4.64e-05 2454954.118595±0.000072
Mp
(M⨁)
188+41-38
 --- ---
178+44-41
 --- --- 188±38
191.643 +41.316-60.385
 --- --- --- --- --- --- ---
Mp
(MJup)
0.59+0.13-0.12
 --- ---
0.56+0.14-0.13
 --- --- 0.59±0.12
0.603 +0.13-0.19
 --- --- --- --- --- --- ---
ρ
(g/cm3)
0.27+0.11-0.08
 --- ---
0.244+0.069-0.064
 --- --- 0.279±0.053 0.261±0.071 --- --- --- --- --- --- ---
Rp
(RJup)
1.416+0.053-0.062
 ---
1.4086+0.0622-0.0588
1.419+0.056-0.058
 ---
1.366+0.110-0.104
 1.381±0.037
1.419 +0.056-0.058
 --- --- 1.41863775205393±0.02829203997113 --- --- --- ---
K
(m/s)
68.4±12.0 --- --- 67±16 --- --- 68.4±12.0 68.4±12.0 --- --- --- --- --- --- ---
λ
(deg)
--- --- --- --- --- --- --- -26.4±10.1 --- --- --- --- --- --- ---
Occ. Depth
(%)
0.0026±0.0010 --- --- --- --- --- --- --- --- --- --- --- --- --- ---
Print
Kepler Detection Products (4 File Types, 15 Files)
Kepler Pipeline Data Validation Reports q1_q12_tce q1_q16_tce q1_q17_dr24_tce q1_q17_dr25_tce
Kepler Pipeline Data Validation Summaries q1_q12_tce q1_q16_tce q1_q17_dr24_tce q1_q17_dr25_tce
Kepler TCERT Reports q1_q16_tce q1_q17_dr24_tce q1_q17_dr25_tce
Kepler Planet Detection Metrics q1_q17_dr24_stellar q1_q17_dr24_stellar q1_q17_dr25_stellar q1_q17_dr25_stellar
Literature Time Series (2 File Types, 2 Files)
File Type Data Points Filter Reference
Photometric Light Curve     2104 Kep (Kepler) Jenkins et al. 2010
Radial Velocity Curve     24 Optical Spectra Jenkins et al. 2010
Kepler Detection Products
Kepler Pipeline Data Validation Summaries q1_q12_tce q1_q16_tce q1_q17_dr24_tce q1_q17_dr25_tce
Kepler Object of Interest
KepID 6922244 6922244 6922244 6922244 6922244 6922244 6922244
KOI Name K00010.01 K00010.01 K00010.01 K00010.01 K00010.01 K00010.01 K00010.01
Kepler Name Kepler-8 b Kepler-8 b Kepler-8 b Kepler-8 b Kepler-8 b Kepler-8 b Kepler-8 b
Exoplanet Archive Disposition CONFIRMED CONFIRMED CONFIRMED CONFIRMED CONFIRMED CONFIRMED CONFIRMED
Vetting Status Done Done Done Done Done Done Done
Date of Last Parameter Update 2018-08-16 2017-08-31 2015-09-24 2014-12-18 2014-12-04 2014-01-07 2013-02-12
Disposition Using Kepler Data CANDIDATE CANDIDATE CANDIDATE NOT DISPOSITIONED NOT DISPOSITIONED NOT DISPOSITIONED CANDIDATE
Not Transit-Like False Positive Flag 0 0 0 0 0 --- ---
Stellar Eclipse False Positive Flag 0 0 0 0 0 --- ---
Centroid Offset False Positive Flag 0 0 0 0 0 --- ---
Ephemeris Match Indicates Contamination False Positive Flag 0 0 0 0 0 --- ---
Disposition Provenance q1_q17_dr25_sup_koi q1_q17_dr25_koi q1_q17_dr24_koi q1_q16_koi q1_q12_koi q1_q8_koi q1_q6_kepler_candidates
Orbital Period [days] 3.522498429±1.98e-07 3.522498429±1.98e-07 3.522498573±1.94e-07 3.522498573±1.94e-07 3.522498573±1.94e-07 3.52249913±7.3e-07 3.5224991±7e-07
Transit Epoch [BKJD] 121.1194228±4.71e-05 121.1194228±4.71e-05 121.1194294±4.64e-05 121.1194294±4.64e-05 121.1194294±4.64e-05 121.118595±7.2e-05 121.1186±7e-05
Transit Epoch [BJD] 2454954.119±4.71e-05 2454954.119±4.71e-05 2454954.119±4.64e-05 2454954.119±4.64e-05 2454954.119±4.64e-05 2454954.118595±0.000072 2454954.1186±0.00007
Parameters Provenance q1_q17_dr25_sup_koi q1_q17_dr25_koi q1_q17_dr24_koi q1_q16_koi q1_q12_koi q1_q8_koi q1_q6_kepler_candidates
Number of Planets 1 1 1 1 1 1 1
TCE Delivery q1_q17_dr25_tce q1_q17_dr25_tce q1_q17_dr24_tce q1_q16_tce q1_q12_tce --- ---
Link to DV Report kplr006922244-20160209194854_dvr.pdf kplr006922244-20160209194854_dvr.pdf kplr006922244-20141002224145_dvr.pdf kplr006922244-20130815195353_dvr.pdf kplr006922244-20121029204534_dvr.pdf --- ---
RA [decimal degrees] 281.28812 281.28812 281.28812 281.28812 281.28812 281.28812 281.28812
Dec [decimal degrees] 42.45108 42.45108 42.45108 42.45108 42.45108 42.45108 42.45108
Kepler-band [mag] 13.563 13.563 13.563 13.563 13.563 13.563 13.563
g'-band [mag] 13.886000000000001 13.886000000000001 13.886000000000001 13.886000000000001 13.886000000000001 13.886000000000001 13.886000000000001
r'-band [mag] 13.511000000000001 13.511000000000001 13.511000000000001 13.511000000000001 13.511000000000001 13.511000000000001 13.511000000000001
i'-band [mag] 13.424000000000001 13.424000000000001 13.424000000000001 13.424000000000001 13.424000000000001 13.424000000000001 13.424000000000001
z'-band [mag] 13.413 13.413 13.413 13.413 13.413 13.413 13.413
J-band [mag] 12.576 12.576 12.576 12.576 12.576 12.576 12.576
H-band [mag] 12.324 12.324 12.324 12.324 12.324 12.324 12.324
K-band [mag] 12.293000000000001 12.293000000000001 12.293000000000001 12.293000000000001 12.293000000000001 12.293000000000001 12.293000000000001
Disposition Score --- 0.998 --- --- --- --- ---
Comment --- NO_COMMENT --- --- --- --- ---
Eccentricity --- 0 0 0 0 0 0
Impact Parameter --- 0.631±0.007
0.6141 +0.0061-0.0094
0.6141 +0.0061-0.0094
0.6141 +0.0061-0.0094
0.64±0.1 0.64±0.1
Transit Duration [hrs] --- 3.19843±0.00653 3.19061±0.00633 3.19061±0.00633 3.19061±0.00633 3.1984 3.1984
Transit Depth [ppm] --- 9145.7±6.6 9379.3±6.6 9379.3±6.6 9379.3±6.6 9165 9245
Planet-Star Radius Ratio ---
0.092086 +0.000141-0.000177
0.093582 +0.000117-0.000198
0.093582 +0.000117-0.000198
0.093582 +0.000117-0.000198
0.09328±0.00018 0.09328±0.00018
Fitted Stellar Density [g/cm**3] ---
0.65374 +0.01481-0.01458
0.68914 +0.01840-0.01254
0.68914 +0.01840-0.01254
0.68914 +0.01840-0.01254
--- ---
Planetary Fit Type --- LS+MCMC MCMC MCMC MCMC --- ---
Planetary Radius [Earth radii] --- 14.59±1.11
14.83 +1.19-1.32
14.83 +1.19-1.32
14.83 +1.19-1.32
15.9±2.1 15.88
Orbit Semi-Major Axis [au] --- .0473 .0473 .0473 .0473 .047 .047
Inclination [deg] --- 85.2 85.37 85.37 85.37 85.37 ---
Equilibrium Temperature [K] --- 1521 1521 1521 1521 1532 1532
Insolation Flux [Earth flux] ---
1264.67 +307.23-276.48
1264.67 +323.37-317.46
1264.67 +323.37-317.46
1264.67 +323.37-317.46
--- ---
Planet-Star Distance over Star Radius --- 7.541±0.171 7.675±0.205 7.675±0.205 7.675±0.205 7.5±0.18 7.5±0.18
Limb Darkening Model --- Claret (2011 A&A 529 75) ATLAS LS Claret (2011 A&A 529 75) ATLAS LS Claret (2011 A&A 529 75) ATLAS LS Claret (2011 A&A 529 75) ATLAS LS Claret (2011 A&A 529 75) ATLAS LS Claret (2011 A&A 529 75) ATLAS LS
Limb Darkening Coeff. 4 --- 0.0 0.0 0.0 0.0 0.0342 ---
Limb Darkening Coeff. 3 --- 0.0 0.0 0.0 0.0 -0.271 ---
Limb Darkening Coeff. 2 --- 0.305 0.3015 0.3015 0.3015 0.5645 ---
Limb Darkening Coeff. 1 --- 0.3201 0.32270000000000004 0.32270000000000004 0.32270000000000004 0.3891 ---
Maximum Single Event Statistic --- 130.83832 144.62324999999998 --- --- --- ---
Maximum Multiple Event Statistic --- 1725.5824 1792.6439 --- --- --- ---
Transit Signal-to-Noise --- 1741.5 1801.5 1801.5 1801.5 2164.6 1503.0
Number of Transits --- 384 384 --- --- --- ---
TCE Planet Number --- 1 1 1 1 --- ---
Quarters --- 11111111111111111000000000000000 11111111111111111000000000000000 --- --- --- ---
Odd-Even Depth Comparision Statistic --- 0.6662 --- --- --- --- ---
Transit Model --- Mandel and Agol (2002 ApJ 580 171) Mandel and Agol (2002 ApJ 580 171) Mandel and Agol (2002 ApJ 580 171) Mandel and Agol (2002 ApJ 580 171) Mandel and Agol (2002 ApJ 580 171) Mandel and Agol (2002 ApJ 580 171)
Link to DV Summary --- kplr006922244-001-20160209194854_dvs.pdf kplr006922244-001-20141002224145_dvs.pdf kplr006922244-001-20130826182306_dvs.pdf kplr006922244-001-20121115231752_dvs.pdf --- ---
Stellar Effective Temperature [K] ---
6225 +112-137
6225 +114-158
6225 +114-158
6225.00 +114.00-158.00
6025.00±112.00 6025
Stellar Surface Gravity [log10(cm/s**2)] ---
4.169 +0.055-0.045
4.169 +0.055-0.048
4.169 +0.055-0.048
4.169 +0.055-0.048
4.110±0.100 4.11
Stellar Metallicity [dex] --- -0.04±0.15
-0.040 +0.120-0.160
-0.040 +0.120-0.160
-0.040 +0.120-0.160
--- ---
Stellar Radius [Solar radii] --- 1.451±0.11
1.451 +0.117-0.129
1.451 +0.117-0.129
1.4510 +0.1170-0.1290
1.5600±0.2100 1.56
Stellar Mass [Solar mass] ---
1.132 +0.108-0.078
1.132 +0.088-0.098
1.132 +0.088-0.098
1.1320 +0.0880-0.0980
1.1400±0.0920 ---
Stellar Parameter Provenance --- q1_q17_dr25_stellar stellar_q1_q16 stellar_q1_q16 stellar_q1_q16 SME SME
FW Offset Significance [percent] --- 0.0 0.0 0.0 0.0 --- ---
FW Source α(OOT) [hrs] --- 18.75252746±0.00000022 18.75252755±0.00000022 18.7525278±0.00000021 18.752527910±0.000000240 --- ---
FW Source δ(OOT) [deg] --- 42.4510634±0.0000021 42.4510688±0.000002 42.4510665±0.0000019 42.45106320±0.00000250 --- ---
FW Source Δα(OOT) [sec] --- -0.5515±0.0087 -0.5479±0.0087 -0.5377±0.0082 0.00074±0.00088 --- ---
FW Source Δδ(OOT) [arcsec] --- -0.0597±0.0075 -0.0403±0.0071 -0.0487±0.007 -0.00316±0.00061 --- ---
FW Δα(OOT) [sec] --- 1e-05±0.00017 -0.0001±0.00017 -6e-05±0.00017 -7e-06±1.9e-05 --- ---
FW Δδ(OOT) [arcsec] --- 0.00036±0.00021 0.00024±0.00021 0.00035±0.00022 3e-05±1.8e-05 --- ---
PRF ΔαSQ(OOT) [arcsec] --- 0.014±0.067 0.013±0.067 0.014±0.067 0.0130±0.0032 --- ---
PRF ΔδSQ(OOT) [arcsec] --- -0.013±0.067 -0.012±0.067 -0.013±0.067 -0.0131±0.0044 --- ---
PRF ΔθSQ(OOT) [arcsec] --- 0.02±0.067 0.018±0.067 0.019±0.067 0.0185±0.0038 --- ---
PRF ΔαSQ(KIC) [arcsec] --- -0.028±0.067 -0.03±0.067 -0.012±0.068 -0.0100±0.0150 --- ---
PRF ΔδSQ(KIC) [arcsec] --- 0.176±0.068 0.175±0.068 0.165±0.068 0.1660±0.0140 --- ---
PRF ΔθSQ(KIC) [arcsec] --- 0.178±0.068 0.177±0.068 0.166±0.068 0.1670±0.0140 --- ---
Chi-Square --- --- --- --- --- 1.49 1.49
Stellar Age [Gyr] --- --- --- --- --- 5.4±1.4 ---
Known Objects
1 Confirmed Planets
1 Kepler Objects of Interest (KOIs)
1 Threshold Crossing Events (TCEs)
2 2MASS Point Source Catalog
Data Files
1 Kepler Time Series
1 SuperWASP Time Series
1 Associated Literature Data
System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive
Aliases
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Time Series
Kepler | K2
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NASA Exoplanet Archive is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program.