NASA
Exoplanet
Archive
A
service of
NASA
Exoplanet
Science
Institute

K2-38 Overview

K2-38 1.12 R⦿ 5758.00 K
K2-38 b
0.148 RJup
K2-38 c
0.222 RJup
Architecture
K2-38
K2-38
K2-38 b
K2-38 c
Other Data
Bibliography 11
Nearby Data 7
Discovery Data
Host Planet Method Year Reference Disposition
K2-38 K2-38 b Transit 2016 Sinukoff et al. 2016 Confirmed Planet
K2-38 K2-38 c Transit 2016 Sinukoff et al. 2016 Confirmed Planet
RA
16h00m07.99s
Dec
-23d11m21.91s
Distance
192.690+2.669-2.597
pc
Parallax
5.1624800±0.0703693 mas
Ecliptic Latitude
-2.55161 deg
Ecliptic Longitude
242.63504 deg
Galactic Latitude
22.1208 deg
Galactic Longitude
349.62852 deg
Total Proper Motion
68.2729691±0.1056866 mas/yr
Proper Motion (RA)
-56.969400±0.121336 mas/yr
Proper Motion (Dec)
-37.625600±0.054998 mas/yr
Photometry
mV
11.344±0.023
mTESS
10.6554±0.0061
mJ
9.911±0.024
mH
9.600±0.026
mKs
9.470±0.021
mKep
11.210
mW1
9.420±0.023
mW2
9.466±0.021
mW3
9.364±0.041
mW4
8.528
mGaia
11.184000±0.001015
mB
12.344±0.269
Abundances
(Hypatia Catalog)
[Fe/H] 0.22±0.04 dex
[C/H] 0.20±0.09 dex
[O/H] 0.15±0.09 dex
[Na/H] 0.23±0.04 dex
[Mg/H] 0.21±0.07 dex
[Al/H] 0.17±0.06 dex
[Si/H] 0.21±0.05 dex
[Ca/H] 0.20±0.06 dex
[Y/H] 0.17±0.08 dex
Mission
K2 : Observed in Campaigns 2, 15
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
K2 Names
K2 Planets and Candidates
K2 Targets
Stellar Hosts
K2 Time Series
Source Bonomo et al. 2023 Toledo-Padrón et al. 2020 TICv8 Gaia DR2 Stassun et al. 2017 Crossfield et al. 2016 Sinukoff et al. 2016 Kruse et al. 2019 Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
5705±66 5731±66
5679.0000+99.8187-99.6625
5182.700+80.775-120.700
 5757±60 5758±92 5757±60 ---
M✶
(M⦿)
1.054+0.070-0.063
1.03+0.04-0.02
1.010000+0.132116-0.112107
 --- 2.24±1.67 1.080±0.040 1.07±0.05 ---
R✶
(R⦿)
1.141±0.012
1.06+0.09-0.06
1.1636800+0.0526457-0.0578417
1.2409927+0.0598869-0.0377970
 1.38±0.21 1.12±0.10 1.10±0.09
1.241 +0.038-0.060
log g
(log10(cm/s2))
--- 4.38±0.11
4.3107200+0.0721750-0.0699974
 --- 4.35±0.08 4.364±0.074 4.35±0.08 ---
Metallicity
(dex)
0.235±0.070 [Fe/H] 0.26±0.05 [Fe/H] 0.23±0.10 [M/H] --- 0.28 [Fe/H] --- 0.28±0.04 [Fe/H] ---
ρ✶
(g/cm3)
--- ---
0.90361970+0.18718550-0.16586750
 --- 1.21±0.70 --- --- ---
L✶
(log10(L⦿))
---
0.0374+0.0560-0.0643
0.10344999+0.02401137-0.02462062
0.00045750532+0.00747964862-0.00761063959
 --- --- --- ---
γ
(km/s)
--- --- --- -35.33348571344460±0.60885349794287 --- --- --- ---
v sin i
(km/s)
--- <2 --- --- --- --- <2 ---
Sp. T
--- G2 V --- --- --- --- G2 V ---
Age
(Gyr)
6.1+3.4-3.1
6.7+2.4-3.0
 --- --- --- --- --- ---
CAII LOG RHK
--- -5.06±0.13 --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Bonomo et al. 2023 Toledo-Padrón et al. 2020 Stassun et al. 2017 Crossfield et al. 2016 Sinukoff et al. 2016 Kruse et al. 2019 Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
---
10.13+0.75-0.66
 10.10±1.96 ---
10.10+1.35-2.57
8.7 +3.4-1.1
P
(days)
4.01593±0.00050 4.01593±0.00050 4.01593±0.00050 4.01628±0.00044 4.01593±0.00050 4.01663±0.00023
Rp
(R⨁)
1.655±0.096 1.54±0.14 1.9±0.3 1.64±0.19 1.55±0.16
1.96 +0.19-0.62
Rp
(RJup)
0.1476±0.0086 0.137±0.012 0.17±0.03 0.146±0.017 0.138±0.014
0.175 +0.017-0.055
Rp/R✶
---
0.01330+0.00071-0.00076
 --- 0.01329±0.00099
0.01281+0.00105-0.00064
0.0145 +0.0013-0.0045
δ
(%)
--- --- 0.0160±0.0022 --- ---
0.02607 +0.00095-0.00094
T14
(hours)
--- --- --- 2.74±0.13 2.861±0.220
3.19200+0.14400-0.24000
TC
(days)
2456896.8786±0.0054 2456896.8786±0.0054 --- 2456896.8753±0.0049 2456896.8786±0.0054 2456896.8693±0.0024
S
(S⨁)
490±35
426+67-60
 --- 480±92 465.9±80.1 ---
a
(au)
0.0503±0.0011
0.04994+0.00048-0.00049
 --- 0.05073±0.00063 0.0506±0.0008 ---
Mp
(M⨁)
7.7+1.2-1.1
7.3+1.1-1.0
 19±10 --- 12.0±2.9 ---
Mp
(MJup)
0.024+0.004-0.003
0.023+0.003-0.003
 0.06±0.03 --- 0.0378±0.0091 ---
i
(deg)
88.36+0.17-0.15
88.36+0.17-0.15
 87.28±2.48 ---
87.28+1.88-3.08
 ---
K
(m/s)
3.02±0.43
2.95+0.44-0.39
 4.6±1.1 --- 4.6±1.1 ---
Teq
(K)
1310±22
1266+44-50
 --- --- 1184±51 ---
b
--- --- --- --- 0.48±0.30 ---
ρ
(g/cm3)
9.30+2.40-1.90
11.0+4.1-2.8
 --- ---
17.5+8.5-6.2
 ---
e
<0.11
0.197+0.067-0.060
 --- --- --- ---
ω
(deg)
---
16+25-33
 --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Bonomo et al. 2023 Toledo-Padrón et al. 2020 Crossfield et al. 2016 Sinukoff et al. 2016 Kruse et al. 2019 Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
---
19.30+1.43-1.26
 ---
26.20+6.90-9.99
26.4 +11.7-4.7
P
(days)
10.56103±0.00090 10.56103±0.00090 10.56098±0.00081 10.56103±0.00090 10.56131±0.00053
Rp
(R⨁)
2.49±0.22 2.29±0.26 2.41±0.27 2.42±0.29
2.83 +0.26-0.76
Rp
(RJup)
0.222±0.020 0.204±0.023 0.215±0.024 0.216±0.026
0.252 +0.023-0.068
Rp/R✶
---
0.0200+0.0017-0.0018
 0.0195±0.0014
0.02004+0.00236-0.00135
0.0209 +0.0018-0.0055
δ
(%)
--- --- --- --- 0.0484±0.0023
T14
(hours)
--- --- 2.38±0.10
2.533+0.312-0.144
2.64000+0.12000-0.26400
TC
(days)
2456900.4752±0.0033 2456900.4752±0.0033 2456900.4746±0.0028 2456900.4752±0.0033 2456900.4756±0.0021
S
(S⨁)
135.3±9.5
117+18-16
 132±25 128.3±22.1 ---
a
(au)
0.0959±0.0022
0.09514+0.00091-0.00094
 0.0967±0.0012 0.0964±0.0016 ---
Teq
(K)
949±16
916+32-37
 --- 858±37 ---
b
--- --- ---
0.640+0.230-0.410
 ---
Mp
(M⨁)
7.4+1.4-1.3
 8.3±1.3 --- 9.90±4.60 ---
Mp
(MJup)
0.023+0.004-0.004
 0.026±0.004 --- 0.0311±0.0145 ---
i
(deg)
87.68+0.31-0.28
87.68+0.31-0.28
 ---
88.61+1.00-1.67
 ---
ρ
(g/cm3)
2.63+1.00-0.72
3.8+1.8-1.1
 ---
3.6+2.7-1.9
 ---
K
(m/s)
2.11±0.37
2.41+0.39-0.37
 --- 2.8±1.3 ---
e
<0.086
0.161+0.096-0.078
 --- --- ---
ω
(deg)
---
153+54-33
 --- --- ---
Print
Known Objects
2 Confirmed Planets
2 K2 Targets
2 2MASS Point Source Catalog
Data Files
4 KELT Time Series
1 SuperWASP Time Series
2 K2 Time Series
2 Associated Literature Data
System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
External Link
Search
Browse
Download

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.