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K2-108 Overview

K2-108 2.31 R⦿ 5414.00 K
K2-108 b
0.476 RJup
Architecture
K2-108
K2-108
K2-108 b
Discovery Data
Host Planet Orbital Separation Planet Size Method Year Reference Disposition
K2-108 K2-108 b 4.73 d 5.33 R⨁ Transit 2017 Petigura et al. 2017 Confirmed Planet
RA
08h13m31.64s
Dec
+16d25m10.26s
Distance
477.295+10.094-9.692
pc
Parallax
2.0669700±0.0430861 mas
Ecliptic Latitude
-3.39755 deg
Ecliptic Longitude
121.91423 deg
Galactic Latitude
25.35171 deg
Galactic Longitude
206.69134 deg
Total Proper Motion
23.7395700±0.0453408 mas/yr
Proper Motion (RA)
-6.874240±0.073306 mas/yr
Proper Motion (Dec)
-22.7225000±0.0418582 mas/yr
Photometry
mV
12.339±0.092
mTESS
11.6736±0.0060
mJ
10.986±0.021
mH
10.652±0.022
mKs
10.561±0.017
mKep
12.160
mW1
10.538±0.024
mW2
10.585±0.020
mW3
10.577±0.088
mW4
8.802
mGaia
12.170400±0.000201
mB
13.106±0.045
mg
15.7535000±0.0132907
mi
15.3456000±0.0138843
mr
15.5054000±0.0133354
mu
15.6082000±0.0095356
mz
14.0529000±0.0233282
Mission
K2 : Observed in Campaigns 5, 18
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 Livingston et al. 2018 Gaia DR2 Mayo et al. 2018 Petigura et al. 2017 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Barros et al. 2016 Pope et al. 2016 Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
5474.0±60.0
5496.000+138.043-124.568
 5599±87
5384.5+84.5-98.5
 5414.0±53.0 5474±60 --- --- 5496.000±131.305 --- ---
Metallicity
(dex)
0.33±0.04 [Fe/H] --- 0.36±0.05 [Fe/H] --- 0.48±0.08 [Fe/H] 0.33±0.04 [Fe/H] --- --- --- --- ---
M✶
(M⦿)
2.83±1.00
0.9640000+0.1165790-0.1209720
 1.17±0.06 ---
1.288050 +0.111913-0.105338
1.121+0.065-0.053
 --- --- --- --- ---
R✶
(R⦿)
1.75±0.14
1.7589600+0.1072890-0.0975397
 1.76±0.04
1.7968997+0.0675912-0.0550978
2.306381 +0.380594-0.354232
1.75±0.14
1.797 +0.055-0.068
1.77 1.75896000862122±0.10241400000000 --- ---
log g
(log10(cm/s2))
3.99±0.05
3.9316300+0.0842693-0.0790174
 4.02±0.03 --- 3.75±0.1 3.99±0.05 --- --- 3.9316300±0.0816434 --- ---
ρ✶
(g/cm3)
---
0.2497324+0.0557402-0.0611323
0.8060+0.2350-0.1950
 --- --- --- --- --- --- --- ---
v sin i
(km/s)
2.83±1.00 --- --- --- --- <2 --- --- --- --- ---
Age
(Gyr)
--- --- --- --- --- 7.8±1.5 --- --- --- --- ---
L✶
(log10(L⦿))
---
0.4053940+0.0181861-0.0250518
 ---
0.38832391+0.01276264-0.01314908
 --- --- --- --- --- --- ---
S Index
0.1225 --- --- --- --- --- --- --- --- --- ---
CAII LOG RHK
-5.2928 --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
K2 Names
K2 Planets and Candidates
Transit
Source Livingston et al. 2018 Howard et al. 2025 Mayo et al. 2018 Petigura et al. 2017 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Pope et al. 2016 Barros et al. 2016 Show Candidate Solutions >> << Hide Candidate Solutions
Teq
(K)
1360±29 1446.0±48.0 --- 1446±48 --- --- 1377.32406161458 --- ---
S
(S⨁)
--- 762.0±100.0 --- 762±100 --- --- 850.482810166102 --- ---
Mp
(M⨁)
--- 59.4±4.4 --- 59.4±4.4 --- --- --- --- ---
Mp
(MJup)
--- 0.187±0.014 --- 0.187±0.014 --- --- --- --- ---
e
--- --- --- 0.180±0.042 --- --- --- --- ---
P
(days)
4.733999+0.000221-0.000227
 4.73401±0.00024
4.733790 +0.000153-0.000150
4.73401±0.00024 4.73363±0.00013
4.734006 +0.000228-0.000223
4.73355750514672±0.00004231500000 4.734 4.73360988
ρ
(g/cm3)
---
2.22+0.77-0.55
 ---
2.22+0.77-0.55
 --- --- --- --- ---
Rp
(R⨁)
5.33±0.21 5.28±0.54
7.56448313175 +1.45698699527-1.21105373261
5.28±0.54
5.81 +0.36-0.71
5.3 +0.9-0.7
5.38526662909778±6.43875360000000 --- ---
Rp
(RJup)
0.476±0.019 0.471±0.048
0.6748579830 +0.1299836734-0.1080429773
0.471±0.048
0.518 +0.032-0.063
0.47 +0.08-0.06
0.480442135929254±0.574428110131370 --- ---
K
(m/s)
--- --- --- 21.3±1.4 --- --- --- --- ---
a
(au)
0.0581±0.0009 --- --- 0.0573±0.0010 --- --- --- --- ---
TC
(days)
2457145.09609±0.00172
(BJD)
2457145.0965±0.0019
(BJD)
2457145.09736 +0.001258-0.001287
2457145.0965±0.0019
(BJD)
2457140.3649±0.0011
(BJD)
2457145.09672 +0.001725-0.001805
(BJD)
2459502.37596300±0.00295559
(BJD)
2457140.365
(BJD)
2457145.095098
(BJD)
a/R✶
9.86+0.54-1.44
 ---
8.598202 +1.663563-2.552240
---
8.9 +2.4-1.3
--- --- --- ---
Rp/R✶
0.0277+0.0011-0.0006
 ---
0.030069 +0.002987-0.001359
---
0.0297 +0.0016-0.0035
0.0276 +0.0018-0.0007
--- 0.027891 ---
δ
(%)
--- --- --- ---
0.0973 +0.0017-0.0018
--- 0.0930250351853628±0.0124072470000000 0.0778 0.083±0.002
T14
(hours)
--- --- --- ---
3.62880+0.08400-0.11520
3.54960+0.06960-0.06000
 3.20892344814356±1.06387870000000 3.40704
3.60500+0.19200-0.19200
b
0.33+0.27-0.23
 --- --- --- ---
0.41 +0.30-0.28
--- 0.197 ---
i
(deg)
--- ---
86.135130 +2.726937-3.999993
--- --- --- --- --- ---
Print
Known Objects
1 Confirmed Planets
2 K2 Targets
2 2MASS Point Source Catalog
Data Files
1 K2 Time Series
1 Associated Literature Data
System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
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