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K2-4 Overview

  • Star: K2-4
    • Stellar Radius: 0.60 Solar Radius
    • Stellar Effective Temperature: 4197.00 K
    • Planet: K2-4 b
      • Disposition Confirmed
      • Planet Radius 0.187 Jupiter Radius

K2-4 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-4
K2-4 b 10 d 2.1 R⨁ Transit 2015 Montet et al. 2015 Confirmed Planet
RA
11h38m58.93s
Dec
-03d54m20.07s
Distance
231.828+2.129-2.091
pc
Parallax
4.285060±0.038965 mas
Ecliptic Latitude
-5.6721 deg
Ecliptic Longitude
176.72777 deg
Galactic Latitude
54.37609 deg
Galactic Longitude
270.75455 deg
Total Proper Motion
23.9979074±0.0631603 mas/yr
Proper Motion (RA)
-23.9542000±0.0632257 mas/yr
Proper Motion (Dec)
-1.447710±0.041553 mas/yr
Photometry
mV 14.855±0.114
mTESS 13.5330±0.0067
mJ 12.367±0.022
mH 11.747±0.024
mKs 11.571±0.023
mKep 14.409
mW1 11.525±0.023
mW2 11.556±0.022
mW3 11.528±0.220
mW4 8.577
mGaia 14.340300±0.000425
mB 16.226±0.054
mg 15.6865000±0.0046413
mi 14.0941000±0.0017293
mr 14.4931000±0.0075971
mu 18.2414000±0.0148373
mz 13.5349000±0.0055092
Mission
K2: Observed in Campaign 1
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
K2 Names
K2 Planets and Candidates
K2 Targets
Stellar Hosts
K2 Time Series
Source TICv8 Gaia DR2 Dressing et al. 2017 Crossfield et al. 2016 Montet et al. 2015 Kruse et al. 2019 Barros et al. 2016 Vanderburg et al. 2016
Teff
(K)
4120.0±122.0
4326.000+364.467-177.970
4014.729980+173.122528-154.567993
 4044±81
4197+45-43
 --- --- 4077
Metallicity
(dex)
--- --- --- ---
-0.12+0.10-0.12
[Fe/H] 		--- --- ---
M✶
(M⦿)
0.64 --- 0.635026±0.063503 0.487±0.072 0.63±0.03 --- --- ---
R✶
(R⦿)
0.684348
0.5718890+0.0501262-0.0854229
0.569359+0.049000-0.047474
 0.435±0.060 0.60±0.02
0.572 +0.085-0.050
--- 0.62
log g
(log10(cm/s2))
4.57369 --- --- 4.849±0.060 --- --- --- ---
L✶
(log10(L⦿))
-0.9151622
-0.98633579+0.00896031-0.00914908
 --- --- --- --- --- ---
ρ✶
(g/cm3)
2.8152257 --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Dressing et al. 2017 Crossfield et al. 2016 Montet et al. 2015 Kruse et al. 2019 Barros et al. 2016 Vanderburg et al. 2016
a/R✶
27.68+2.14-1.99
 --- 27.79±0.72
24.6 +5.8-2.6
--- ---
Teq
(K)
--- --- 563±11 --- --- ---
P
(days)
10.003417+0.001017-0.000996
 10.0044±0.0011 10.00329±0.00159
10.00510 +0.00044-0.00043
10.00617969 10.003610
Rp
(R⨁)
2.10+0.20-0.19
 1.69±0.30 2.37±0.40
2.29 +0.36-0.28
--- 2.57
Rp
(RJup)
0.187+0.018-0.017
 0.151±0.027 0.211±0.036
0.204 +0.032-0.025
 --- 0.229
a
(au)
0.078±0.003 0.0715±0.0035 0.0777±0.0012 --- --- ---
δ
(%)
--- --- 0.120
0.1482 +0.0053-0.0055
0.13±0.011 0.146
TC
(days)
2456815.524±0.004
(BJD)
2456815.5170±0.0045
(BJD-TDB)
2456815.5212±0.0080
(BJD)
2456815.5157 +0.0019-0.0020
(BJD)
2456815.513027
(BJD)
2456815.524
(BJD)
S
(S⨁)
15.6+9.2-6.2
 8.90±2.70 --- --- --- ---
Rp/R✶
0.033752+0.001197-0.001154
 0.0349±0.0041 ---
0.0368 +0.0015-0.0031
--- 0.03485
T14
(hours)
--- 2.87±0.17 ---
2.92320+0.09360-0.12720
3.03600+0.40100-0.40100
 2.88000
b
--- --- --- --- --- 0.41
ω
(deg)
-41.4400000+132.8952790-98.9633230
 --- --- --- --- ---
e
0.0800000+0.1611920-0.0686410
 --- --- --- --- ---
i
(deg)
89.54+0.32-0.43
 --- --- --- --- ---
Print
Known Objects
1 Confirmed Planets
1 K2 Targets
1 2MASS Point Source Catalog
Data Files
1 K2 Time Series
1 Associated Literature Data
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  • Candidate
  • False Positive Planet
  • Controversial
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  • Aliases
  • Data Access
  • Transit Prediction Service
  • Time Series
  • Kepler | K2
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