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K2-98 Overview

  • Star: K2-98
    • Stellar Radius: 1.37 Solar Radius
    • Stellar Effective Temperature: 6529.98 K
    • Planet: K2-98 b
      • Disposition Confirmed
      • Planet Radius 0.452 Jupiter Radius

K2-98 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-98
K2-98 b 10.14 d 5.07 R⨁ Transit 2016 Barragán et al. 2016 Confirmed Planet
RA
08h25m57.17s
Dec
+11d30m39.94s
Distance
518.625+11.518-11.037
pc
Parallax
1.8999100±0.0416012 mas
Ecliptic Latitude
-7.48585 deg
Ecliptic Longitude
125.99048 deg
Galactic Latitude
26.13802 deg
Galactic Longitude
213.02652 deg
Total Proper Motion
18.5925353±0.0670626 mas/yr
Proper Motion (RA)
-15.9682000±0.0727064 mas/yr
Proper Motion (Dec)
-9.5236000±0.0477467 mas/yr
Photometry
mV 12.216±0.057
mTESS 11.6718±0.0082
mJ 11.124±0.022
mH 10.905±0.025
mKs 10.869±0.028
mKep 12.102
mW1 10.823±0.023
mW2 10.856±0.020
mW3 10.678±0.108
mW4 8.258
mGaia 12.039800±0.000196
mB 12.646±0.026
mg 12.7167000±0.0011005
mi 12.0217000±0.0014758
mr 12.1294000±0.0009827
mu 14.8585000±0.0057237
mz 13.506700±0.008161
Abundances
(Hypatia Catalog)
[Fe/H] -0.16±0.04 dex
[Mg/H] -0.20±0.07 dex
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 Thygesen et al. 2023 TICv8 Livingston et al. 2018 Gaia DR2 Mayo et al. 2018 Barragán et al. 2016 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Pope et al. 2016 Barros et al. 2016
Teff
(K)
6103.0±100.0
6260.0+170.0-160.0
6283.0000+99.8574-157.7790
 6172±82
6529.98+629.94-250.98
 6095.0±50.0 6120±80 --- --- 6283.000±128.818 --- ---
L✶
(log10(L⦿))
---
0.504+0.030-0.030
0.5035644+0.0323040-0.0222560
 ---
0.48945640+0.01352995-0.01396506
 --- --- --- --- --- --- ---
γ
(km/s)
--- --- --- --- 79.662935564002993±1.464320625363154 --- 76.7479±0.0022 --- --- --- --- ---
R✶
(R⦿)
1.565±0.065
1.518+0.082-0.076
1.5069600+0.0714075-0.0758487
 1.57±0.04
1.3726416+0.1119260-0.2309090
1.508200 +0.220829-0.219765
1.311+0.083-0.048
1.37 +0.23-0.11
1.39 1.51±0.07 --- ---
Metallicity
(dex)
-0.0600±0.0440 [Fe/H]
-0.0440+0.0640-0.0700
[Fe/H] 		--- -0.060±0.050 [Fe/H] --- -0.1±0.08 [Fe/H] -0.2±0.1 [Fe/H] --- --- --- --- ---
v sin i
(km/s)
5.6±1.0 --- --- --- --- --- 6.1±0.5 --- --- --- --- ---
Age
(Gyr)
---
3.4+2.2-1.4
 --- --- --- ---
5.2+1.2-1.0
 --- --- --- --- ---
ρ✶
(g/cm3)
---
0.499+0.100-0.087
0.5067212+0.1462638-0.0930952
0.633+0.186-0.155
 --- ---
0.66+0.07-0.12
 --- --- --- --- ---
M✶
(M⦿)
0.91±0.04
1.246+0.078-0.110
1.230000+0.184805-0.184822
 1.20±0.03 ---
1.155595 +0.082229-0.069332
1.074±0.042 --- --- --- --- ---
log g
(log10(cm/s2))
4.120±0.081
4.169+0.060-0.063
4.1717700+0.1048450-0.0676611
 4.13±0.02 --- 4.09±0.1
4.23+0.03-0.05
 --- --- 4.171770±0.086253 --- ---
Sp. T
--- --- --- --- --- --- F8 V --- --- --- --- ---
S Index
0.1335 --- --- --- --- --- --- --- --- --- --- ---
CAII LOG RHK
-5.189 --- --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
K2 Names
K2 Planets and Candidates
Transit
Source Thygesen et al. 2023 Howard et al. 2025 Livingston et al. 2018 Mayo et al. 2018 Barragán et al. 2016 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Pope et al. 2016 Barros et al. 2016
b
0.37+0.19-0.24
 ---
0.33+0.28-0.22
 ---
0.27+0.17-0.14
 ---
0.38 +0.29-0.26
--- 0.171 ---
P
(days)
10.1367349+0.0000094-0.0000092
 10.13693±0.00046
10.136448+0.000609-0.000591
10.136796 +0.000423-0.000393
10.13675±0.00033
10.13682 +0.00039-0.00036
10.136527 +0.000637-0.000682
10.1367283±0.0000116 10.136 10.13892836
Rp/R✶
0.03049+0.00070-0.00044
 ---
0.0304+0.0010-0.0005
0.030442 +0.001157-0.000749
0.0301+0.0004-0.0003
0.0307 +0.0011-0.0027
0.0295 +0.0012-0.0006
--- 0.029486 ---
δ
(%)
0.0930+0.0043-0.0027
 --- --- --- --- 0.1043±0.0018 --- 0.10590000±0.00409179 0.0869 0.095±0.002
T14
(hours)
5.1216+0.0576-0.0504
 --- --- ---
5.03+0.05-0.04
5.12160+0.09360-0.12240
4.97040+0.11040-0.08880
 5.341±0.689 4.94496
5.37100+0.19700-0.19700
TC
(days)
2457662.95321+0.00077-0.00074
(BJD-TDB)
2457145.9796±0.0016
(BJD)
2457145.98230+0.00220-0.00214
(BJD)
2457145.98 +0.001512-0.001611
2457145.9807±0.0012
(BJD-TDB)
2457145.9809±0.0012
(BJD)
2457145.98231 +0.002574-0.002437
(BJD)
2460247.8200340±0.0031022
(BJD)
2457145.985
(BJD)
2457145.977028
(BJD)
a/R✶
13.94+0.90-0.87
 ---
15.09+0.80-2.34
14.557693 +1.049497-2.379021
15.388+0.543-1.192
14.3 +3.4-1.3
--- --- --- ---
Teq
(K)
1185.0+23.0-21.0
 1093.0±31.0 1092±21 ---
1102+26-20
 --- --- 1563 --- ---
Rp
(R⨁)
5.07+0.31-0.28
4.93+0.13-0.07
 5.20±0.19
5.00805298016 +0.757581008929-0.74008365376
4.3+0.3-0.2
4.60 +0.79-0.55
4.5 +0.6-0.5
5.441190±0.285221 --- ---
Rp
(RJup)
0.452+0.028-0.025
0.440+0.012-0.006
 0.464±0.017
0.4467885610 +0.0675868506-0.0660258412
0.38+0.03-0.02
0.41 +0.070-0.049
0.40 +0.05-0.04
0.4854313±0.0254458 --- ---
a
(au)
0.09860+0.00200-0.00290
 --- 0.0974±0.0009 ---
0.09430+0.00610-0.00520
 --- --- --- --- ---
ω
(deg)
14.00+110.00-98.00
 --- --- --- --- --- --- --- --- ---
Mp
(M⨁)
34.0+14.0-14.6
20.0+21.0-33.0
 --- --- 32.2±8.1 --- --- --- --- ---
Mp
(MJup)
0.107+0.044-0.046
0.0629+0.0661-0.1038
 --- --- 0.101±0.025 --- --- --- --- ---
e
0.119+0.150-0.083
 --- --- --- 0 --- --- --- --- ---
i
(deg)
88.39+0.98-0.74
 --- ---
88.499587 +1.043566-1.512797
89.0+0.5-0.7
 --- --- --- --- ---
ρ
(g/cm3)
1.40+0.71-0.64
0.80+0.90-1.30
 --- ---
2.15+0.67-0.60
 --- --- --- --- ---
K
(m/s)
8.80+3.50-3.80
 --- --- --- 9.10±2.30 --- --- --- --- ---
S
(S⨁)
---
339.0+41.0-37.0
 --- --- --- --- --- 992.258 --- ---
Print
Known Objects
1 Confirmed Planets
2 K2 Targets
3 2MASS Point Source Catalog
Data Files
1 K2 Time Series
1 Associated Literature Data
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  • False Positive Planet
  • Controversial
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  • Aliases
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  • Kepler | K2
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