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Kepler-421 Overview

  • Star: Kepler-421
    • Stellar Radius: 0.83 Solar Radius
    • Stellar Effective Temperature: 5224.00 K
    • Planet: Kepler-421 b
      • Disposition Confirmed
      • Planet Radius 0.371 Jupiter Radius

Kepler-421 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
Kepler-421
Kepler-421 b 704.2 d 4.16 R⨁ Transit 2014 Kipping et al. 2014 Confirmed Planet
RA
18h53m01.63s
Dec
+45d05m15.66s
Distance
348.558+2.039-2.015
pc
Parallax
2.840110±0.016556 mas
Ecliptic Latitude
67.38448 deg
Ecliptic Longitude
294.89537 deg
Galactic Latitude
18.57615 deg
Galactic Longitude
74.78908 deg
Total Proper Motion
20.7883110±0.0369630 mas/yr
Proper Motion (RA)
-4.0104400±0.0315596 mas/yr
Proper Motion (Dec)
-20.3978000±0.0371561 mas/yr
Photometry
mV 13.611±0.080
mTESS 12.8243±0.0061
mJ 12.009±0.020
mH 11.619±0.019
mKs 11.535±0.017
mKep 13.354
mW1 11.467±0.023
mW2 11.494±0.021
mW3 11.504±0.123
mW4 9.354
mGaia 13.347700±0.000412
mB 14.289±0.258
mg ---
mi ---
mr ---
mz ---
Abundances
(Hypatia Catalog)
[Fe/H] -0.24±0.02 dex
[C/H] -0.25±0.09 dex
[O/H] -0.23±0.09 dex
[Na/H] -0.50±0.04 dex
[Mg/H] -0.21±0.07 dex
[Al/H] -0.33±0.06 dex
[Si/H] -0.23±0.05 dex
[Ca/H] -0.21±0.06 dex
[Y/H] -0.20±0.08 dex
Mission
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Kepler Names
KOI
Kepler Stellar Data
Kepler Positional 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 Kipping et al. 2014 Batalha et al. 2013 Latham et al. 2005 Fulton & Petigura 2018 Q1-Q17 DR25 Supplemental KOI Table Q1-Q16 KOI Table Q1-Q12 KOI Table Q1-Q8 KOI Table Q1-Q6 KOI Table
Teff
(K)
5265.340+113.353-126.611
 5224±104
5179.233+157.517-137.623
 5308±50 5310 5141 5224±60 ---
5305 +121-95
5305.00 +121.00-95.00
5310.00±50.00 5310
Metallicity
(dex)
-0.271±0.136 [M/H] --- --- -0.25±0.08 [Fe/H] --- -0.645 [Fe/H] -0.23±0.04 [Fe/H] ---
-0.260 +0.180-0.140
[Fe/H]
-0.260 +0.180-0.140
[Fe/H] 		--- ---
Age
(Gyr)
--- --- --- 4.0±0.8 --- ---
12.30+1.19-2.07
 --- --- --- 9.3±3.7 ---
ρ✶
(g/cm3)
2.3778412+0.6544033-0.4432860
 --- ---
1.58 +0.22-0.37
--- ---
1.42+0.05-0.03
 ---
0.24101 +0.42721-0.10660
0.24101 +0.42721-0.10660
--- ---
M✶
(M⦿)
0.9020000+0.1421850-0.0767896
 --- --- 0.794±0.030 0.80 ---
0.777+0.018-0.011
 ---
0.753 +0.066-0.029
0.7530 +0.0660-0.0290
0.8010±0.0290 ---
R✶
(R⦿)
0.8117020+0.0463899-0.0449266
0.834+0.035-0.033
0.83418125+0.04616360-0.04851590
 0.757±0.029 0.79 0.819
0.827+0.021-0.020
 ---
0.818 +0.062-0.066
0.8180 +0.0620-0.0660
0.7870±0.0440 .79
log g
(log10(cm/s2))
4.5744800+0.0913560-0.0730142
 --- --- 4.61±0.10 4.55 4.58 --- ---
4.489 +0.076-0.046
4.489 +0.076-0.046
4.550±0.100 4.55
L✶
(log10(L⦿))
-0.3408061+0.0119391-0.0123727
 ---
-0.34572268+0.00726189-0.00738538
-0.398 +0.061-0.071
--- --- --- --- --- --- --- ---
v sin i
(km/s)
--- --- --- 0.0±0.5 --- --- --- --- --- --- --- ---
Sp. T
--- --- --- G9/K0 --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Transit
Tools
Planetary Systems
Transit Prediction Service
Kepler Names
KOI
Transit
Source Kipping et al. 2014 Berger et al. 2018 Fulton & Petigura 2018 Q1-Q17 DR25 Supplemental KOI Table Q1-Q16 KOI Table Q1-Q12 KOI Table Q1-Q8 KOI Table
a/R✶
346 +16-29
--- --- --- 185±82 185±82 117.7±6.1
Teq
(K)
184.8 +8.6-4.8
--- --- --- 178 178 216
b
0.21 +0.17-0.14
--- --- ---
0.8495 +0.0063-0.3772
0.8495 +0.0063-0.3772
0.778±0.1
S
(S⨁)
--- 0.234±0.005 0.2±0.0 ---
0.24 +0.06-0.05
0.24 +0.06-0.05
---
e
0.041 +0.095-0.034
--- --- --- 0 0 0
i
(deg)
89.965 +0.024-0.031
--- --- --- 89.95 89.95 89.38
P
(days)
704.1984±0.0016 --- 704.962626000±0.009050000 704.962626±0.00905 704.962626±0.00905 704.962626±0.00905 362±82
Rp
(R⨁)
4.16 +0.19-0.16
4.622+0.207-0.488
 4.583±0.286 ---
4.53 +0.35-0.36
4.53 +0.35-0.36
4.73±0.28
Rp
(RJup)
0.371 +0.017-0.014
0.4123+0.0185-0.0435
 0.4089±0.0255 ---
0.404+0.031-0.032
0.404+0.031-0.032
0.422+0.025-0.025
Rp/R✶
0.05008±0.00081 ---
0.050753+0.000788-0.004967
 ---
0.050753 +0.000788-0.004967
0.050753 +0.000788-0.004967
0.0551±0.0011
a
(au)
1.219±0.089 --- 1.42608±0.00883 --- 1.4108 1.4108 .923
δ
(%)
--- --- --- --- 0.23191±0.00581 0.23191±0.00581 0.29700
T14
(hours)
15.79 +0.12-0.10
--- --- --- 18.003±0.732 18.003±0.732 16.7283
TC
(days)
2455325.7674±0.0012
(BJD-UTC)
--- --- 2455325.772±0.00398
(BJD)
2455325.772±0.00398
(BJD)
2455325.772±0.00398
(BJD)
2455325.7676±0.002
(BJD)
ω
(deg)
160 +150-120
--- --- --- --- --- ---
Print
Kepler Detection Products (4 File Types, 7 Files)
Kepler Pipeline Data Validation Reports q1_q17_dr25_tce
Kepler Pipeline Data Validation Summaries q1_q17_dr25_tce
Kepler TCERT Reports q1_q17_dr25_tce
Kepler Planet Detection Metrics q1_q17_dr24_stellar q1_q17_dr24_stellar q1_q17_dr25_stellar q1_q17_dr25_stellar
Kepler Object of Interest
KepID 8800954 8800954 8800954 8800954 8800954
KOI Name K01274.01 K01274.01 K01274.01 K01274.01 K01274.01
Kepler Name Kepler-421 b Kepler-421 b Kepler-421 b Kepler-421 b Kepler-421 b
Exoplanet Archive Disposition CONFIRMED CONFIRMED CONFIRMED CONFIRMED CONFIRMED
Vetting Status Done Done Done Done Done
Date of Last Parameter Update 2018-08-16 2014-12-18 2014-12-04 2014-01-07 2013-02-12
Disposition Using Kepler Data CANDIDATE NOT DISPOSITIONED NOT DISPOSITIONED NOT DISPOSITIONED CANDIDATE
Not Transit-Like False Positive Flag 0 0 0 --- ---
Stellar Eclipse False Positive Flag 0 0 0 --- ---
Centroid Offset False Positive Flag 0 0 0 --- ---
Ephemeris Match Indicates Contamination False Positive Flag 0 0 0 --- ---
Disposition Provenance q1_q17_dr25_sup_koi q1_q16_koi q1_q12_koi q1_q8_koi q1_q6_kepler_candidates
Orbital Period [days] 704.962626±0.00905 704.962626±0.00905 704.962626±0.00905 362±82 362
Transit Epoch [BKJD] 492.77178±0.00398 492.77178±0.00398 492.77178±0.00398 492.7676±0.002 493
Transit Epoch [BJD] 2455325.772±0.00398 2455325.772±0.00398 2455325.772±0.00398 2455325.7676±0.002 2455326
Parameters Provenance q1_q17_dr25_sup_koi q1_q16_koi q1_q12_koi q1_q8_koi q1_q6_kepler_candidates
Number of Planets 1 1 1 1 1
TCE Delivery q1_q17_dr25_tce --- --- --- ---
Link to DV Report kplr008800954-20160209194854_dvr.pdf --- --- --- ---
RA [decimal degrees] 283.25681 283.25681 283.25681 283.25681 283.25681
Dec [decimal degrees] 45.08778 45.08778 45.08778 45.08778 45.08778
Kepler-band [mag] 13.354 13.354 13.354 13.354 13.354
g'-band [mag] 13.928 13.928 13.928 13.928 13.928
r'-band [mag] 13.314 13.314 13.314 13.314 13.314
i'-band [mag] 13.107 13.107 13.107 13.107 13.107
z'-band [mag] 13.008 13.008 13.008 13.008 13.008
J-band [mag] 12.009 12.009 12.009 12.009 12.009
H-band [mag] 11.619 11.619 11.619 11.619 11.619
K-band [mag] 11.535 11.535 11.535 11.535 11.535
Eccentricity --- 0 0 0 0
Impact Parameter ---
0.8495 +0.0063-0.3772
0.8495 +0.0063-0.3772
0.778±0.1 ---
Transit Duration [hrs] --- 18.003±0.732 18.003±0.732 16.7283 16.7283
Transit Depth [ppm] --- 2319.1±58.1 2319.1±58.1 2970 2908
Planet-Star Radius Ratio ---
0.050753 +0.000788-0.004967
0.050753 +0.000788-0.004967
0.0551±0.0011 0
Fitted Stellar Density [g/cm**3] ---
0.24101 +0.42721-0.10660
0.24101 +0.42721-0.10660
--- ---
Planetary Fit Type --- MCMC MCMC --- ---
Planetary Radius [Earth radii] ---
4.53 +0.35-0.36
4.53 +0.35-0.36
4.73±0.28 4.73
Orbit Semi-Major Axis [au] --- 1.4108 1.4108 .923 ---
Inclination [deg] --- 89.95 89.95 89.38 ---
Equilibrium Temperature [K] --- 178 178 216 ---
Insolation Flux [Earth flux] ---
0.24 +0.06-0.05
0.24 +0.06-0.05
--- ---
Planet-Star Distance over Star Radius --- 185±82 185±82 117.7±6.1 ---
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
Limb Darkening Coeff. 4 --- 0.0 0.0 -0.4223 ---
Limb Darkening Coeff. 3 --- 0.0 0.0 0.8247 ---
Limb Darkening Coeff. 2 --- 0.218 0.218 -0.1473 ---
Limb Darkening Coeff. 1 --- 0.4744 0.4744 0.5165 ---
Transit Signal-to-Noise --- 96.1 96.1 175.9 103.7
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)
Stellar Effective Temperature [K] ---
5305 +121-95
5305.00 +121.00-95.00
5310.00±50.00 5310
Stellar Surface Gravity [log10(cm/s**2)] ---
4.489 +0.076-0.046
4.489 +0.076-0.046
4.550±0.100 4.55
Stellar Metallicity [dex] ---
-0.260 +0.180-0.140
-0.260 +0.180-0.140
--- ---
Stellar Radius [Solar radii] ---
0.818 +0.062-0.066
0.8180 +0.0620-0.0660
0.7870±0.0440 .79
Stellar Mass [Solar mass] ---
0.753 +0.066-0.029
0.7530 +0.0660-0.0290
0.8010±0.0290 ---
Stellar Parameter Provenance --- stellar_q1_q16 stellar_q1_q16 SPC SPC
Chi-Square --- --- --- 0.85 1.25
Stellar Age [Gyr] --- --- --- 9.3±3.7 ---
Comment --- --- --- --- Period estimated from the duration of a single transit and knowledge of the stellar radius
Known Objects
1 Confirmed Planets
1 Kepler Objects of Interest (KOIs)
1 Threshold Crossing Events (TCEs)
3 2MASS Point Source Catalog
Data Files
1 Kepler Time Series
1 SuperWASP Time Series
1 TrES Time Series
1 Associated Literature Data
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  • Kepler | K2
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