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K2-39 Overview

  • Star: K2-39
    • Stellar Radius: 3.08 Solar Radius
    • Stellar Effective Temperature: 4915.00 K
    • Planet: K2-39 b
      • Disposition Confirmed
      • Planet Radius 0.560 Jupiter Radius

K2-39 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-39
K2-39 b 4.61 d 6.28 R⨁ Transit 2016 Van Eylen et al. 2016 Confirmed Planet
K2-39 b
RA
22h33m28.37s
Dec
-09d01m22.59s
Distance
307.470±4.656 pc
Parallax
3.2244000±0.0488659 mas
Ecliptic Latitude
.05348 deg
Ecliptic Longitude
336.64162 deg
Galactic Latitude
-52.74736 deg
Galactic Longitude
55.42682 deg
Total Proper Motion
56.7377939±0.0800522 mas/yr
Proper Motion (RA)
-40.9478000±0.0864375 mas/yr
Proper Motion (Dec)
-39.2741000±0.0724757 mas/yr
Photometry
mV 10.831±0.025
mTESS 9.9735±0.0073
mJ 9.082±0.024
mH 8.594±0.042
mKs 8.516±0.024
mKep 10.581
mW1 8.419±0.022
mW2 8.514±0.021
mW3 8.441±0.025
mW4 8.338±0.435
mGaia 10.595900±0.000521
mB 12.153±0.188
mg 11.4948000±0.0005857
mi 10.3292000±0.0005127
mr 10.607200±0.000496
mu 14.9806000±0.0068325
mz 10.6531000±0.0018425
Abundances
(Hypatia Catalog)
[Fe/H] 0.42±0.01 dex
[C/H] 0.30±0.09 dex
[O/H] 0.27±0.09 dex
[Na/H] 0.42±0.04 dex
[Mg/H] 0.48±0.13 dex
[Al/H] 0.36±0.06 dex
[Si/H] 0.28±0.05 dex
[Ca/H] 0.39±0.06 dex
[Y/H] 0.35±0.08 dex
Mission
K2: Observed in Campaign 3
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
K2 Names
K2 Planets and Candidates
K2 Targets
Stellar Hosts
K2 Time Series
Source Howard et al. 2025 TICv8 Gaia DR2 Petigura et al. 2017 Stassun et al. 2017 Van Eylen et al. 2016 Crossfield et al. 2016 ExoFOP Schmitt et al. 2016 Vanderburg et al. 2016
Teff
(K)
4915.0±100.0 4911.0±25.0
4859.9700+99.6623-42.7600
 4912±60 4881±20 4881±20 4993±72 4911±25 --- 4843
Metallicity
(dex)
0.430±0.043 [Fe/H] 0.39±0.10 [M/H] --- 0.43±0.04 [Fe/H] 0.32 [Fe/H] 0.32±0.04 [Fe/H] --- --- --- ---
v sin i
(km/s)
0.10±1.00 --- --- 0.1 --- 2.01±0.50 --- --- --- ---
M✶
(M⦿)
1.38±0.16 --- ---
1.192+0.085-0.070
 0.660±0.560
1.53+0.13-0.12
 1.170±0.060 --- --- ---
R✶
(R⦿)
3.08±0.14 3.12057
3.064995+0.054655-0.121943
 2.93±0.21 2.97±0.77
3.88+0.48-0.42
 2.59±0.21 3.120569944381714 --- 0.74
S Index
0.173 --- --- --- --- --- --- --- --- ---
CAII LOG RHK
-5.06 --- --- --- --- --- --- --- --- ---
log g
(log10(cm/s2))
3.58±0.08 --- --- 3.58±0.05 3.44±0.07 3.44±0.07 3.682±0.056 4.438 --- ---
ρ✶
(g/cm3)
--- --- --- --- 0.04±0.01
0.036+0.014-0.012
 --- --- --- ---
L✶
(log10(L⦿))
--- ---
0.67408873+0.00900674-0.00919753
 --- --- --- --- --- --- ---
γ
(km/s)
--- --- 24.345102360836577±0.592055252201677 --- --- --- --- --- --- ---
Age
(Gyr)
--- --- ---
6.7+1.7-1.3
 ---
>3.09+0.92-0.70
 --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
K2 Names
K2 Planets and Candidates
Transit
Source Stassun et al. 2017 Howard et al. 2025 Petigura et al. 2017 Van Eylen et al. 2016 Crossfield et al. 2016 ExoFOP Schmitt et al. 2016 Vanderburg et al. 2016
Teq
(K)
---
1550.0+58.0-55.0
 1670±54 --- --- 1124.9925994318244 --- ---
S
(S⨁)
---
1370.0+220.0-180.0
 1356±175 --- 1148±201 378.54687370389775 --- ---
Mp
(M⨁)
29±16
37.6+5.3-4.8
 39.8±4.4
50.3+9.7-9.4
 --- --- --- ---
Mp
(MJup)
0.090±0.050
0.118+0.017-0.015
 0.125±0.014
0.158+0.031-0.030
 --- --- --- ---
P
(days)
4.60543±0.00046 4.60547±0.00047 4.60497±0.00077 4.60543±0.00046 4.60497±0.00071 4.608085407362772±0.004088831000000
4.6028 +0.0342-0.0289
4.6049829
ρ
(g/cm3)
---
0.930+0.250-0.190
1.17+0.47-0.32
0.50+0.29-0.17
 --- --- --- ---
Rp
(R⨁)
6.3±1.7
6.40+0.41-0.17
 5.71±0.63 8.2±1.1 7.09±0.00 7.0446125187176225±1.3095409000000000 --- 1.67
Rp
(RJup)
0.56±0.15
0.571+0.037-0.015
 0.509±0.056 0.73±0.10 0.633±0.000 0.62847931558287207±0.11682961502467393 --- 0.149
TC
(days)
--- 2456985.4268±0.0038
(BJD)
2456985.4315±0.0058
(BJD)
2456980.8236±0.0039
(BJD)
2456985.4315±0.0054
(BJD-TDB)
2460807.33247700±0.01064087
(BJD)
2456980.821 +0.0047-0.0041
(BJD)
2456980.828
(BJD)
Rp/R✶
--- --- 0.0179±0.0013
0.01925+0.00099-0.00076
 0.0252±0.0027 ---
0.0178 +0.0012-0.0006
0.01872
a
(au)
--- --- 0.0574±0.0012
0.062+0.010-0.012
 0.05708±0.00098 --- --- ---
T14
(hours)
--- --- --- --- 0.0±1.4 8.903721512659553±0.669903200000000
8.18400+0.19200-0.21600
 8.79000
a/R✶
3.41±0.42 --- ---
3.41+0.39-0.45
 --- ---
3.8 +0.5-0.7
---
e
0.0 ---
0.152+0.084-0.068
 0 --- --- --- ---
i
(deg)
80.39±4.19 --- ---
80.39+3.99-4.39
 --- ---
83.4 +4.6-6.9
---
K
(m/s)
14.4±2.6 --- 13.8±1.4 14.4±2.6 --- --- --- ---
δ
(%)
0.0370±0.0034 --- --- --- --- 0.0435557816763854±0.0046338223000000 --- 0.0432
b
--- --- ---
0.57+0.15-0.20
 --- ---
0.04 +0.62-0.55
0.37
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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