IPAC Logo
NASA
Exoplanet
Archive
A
service of
NASA
Exoplanet
Science
Institute

K2-105 Overview

  • Star: K2-105
    • Stellar Radius: 0.91 Solar Radius
    • Stellar Effective Temperature: 5475.00 K
    • Planet: K2-105 b
      • Disposition Confirmed
      • Planet Radius 0.303 Jupiter Radius

K2-105 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-105
K2-105 b 8.27 d 3.4 R⨁ Transit 2017 Narita et al. 2017 Confirmed Planet
RA
08h21m40.87s
Dec
+13d29m51.04s
Distance
197.989+1.555-1.530
pc
Parallax
5.0222400±0.0390478 mas
Ecliptic Latitude
-5.80027 deg
Ecliptic Longitude
124.50004 deg
Galactic Latitude
26.00524 deg
Galactic Longitude
210.53336 deg
Total Proper Motion
8.5017779±0.0580860 mas/yr
Proper Motion (RA)
6.9634500±0.0650615 mas/yr
Proper Motion (Dec)
-4.8775600±0.0402884 mas/yr
Photometry
mV 11.752±0.032
mTESS 11.2089±0.0061
mJ 10.541±0.020
mH 10.173±0.025
mKs 10.091±0.019
mKep 11.687
mW1 10.058±0.023
mW2 10.121±0.021
mW3 10.128±0.064
mW4 8.55
mGaia 11.712400±0.000308
mB 12.681±0.407
mg 12.432100±0.000896
mi 11.5689000±0.0008367
mr 11.7522000±0.0008132
mu 15.1324000±0.0067427
mz 12.9819000±0.0061429
Abundances
(Hypatia Catalog)
[Fe/H] 0.35±0.04 dex
[Mg/H] 0.44±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 Bourrier et al. 2023 Castro-González et al. 2022 TICv8 Livingston et al. 2018 Gaia DR2 Mayo et al. 2018 Narita et al. 2017 Luo et al. 2018 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Barros et al. 2016 Pope et al. 2016
Teff
(K)
5373.0±100.0
5636+49-52
5636+49-52
5411.150+136.048-141.865
 5464±65
5302.6000+44.0665-75.1330
 5475.0±50.0 5434±53 --- --- --- 5411.1±139.0 --- ---
Metallicity
(dex)
0.220±0.047 [Fe/H] ---
0.23+0.04-0.03
[Fe/H] 		0.3276800±0.0150921 [M/H] 0.25±0.05 [Fe/H] --- 0.26±0.08 [Fe/H] 0.26±0.05 [Fe/H] --- --- --- --- --- ---
M✶
(M⦿)
0.94±0.04 --- 1.05±0.02
0.9410000+0.1348560-0.1033760
 0.990±0.030 ---
0.964948 +0.030502-0.028986
1.01±0.07 --- --- --- --- --- ---
R✶
(R⦿)
0.905±0.035 0.97±0.01 0.97±0.01
0.9154050+0.0587598-0.0510090
 0.91±0.01
0.9466620+0.0274079-0.0155402
0.908831 +0.058148-0.035698
0.950+0.110-0.100
 ---
0.947 +0.016-0.027
0.98 0.92±0.05 --- ---
log g
(log10(cm/s2))
4.450±0.085 --- 4.49±0.01
4.4884300+0.0810925-0.0901731
 4.51±0.02 --- 4.51±0.1 4.477±0.085 --- --- --- 4.49±0.09 --- ---
L✶
(log10(L⦿))
--- --- ---
-0.1889202+0.0156837-0.0111067
 ---
-0.19495992+0.00494527-0.00500219
 --- --- --- --- --- --- --- ---
γ
(km/s)
--- --- --- --- --- -32.261957871118994±0.403509876193515 --- --- --- --- --- --- --- ---
ρ✶
(g/cm3)
--- --- ---
1.7294762+0.4677000-0.3742469
1.541+0.527-0.427
 --- ---
1.68+0.62-0.45
 --- --- --- --- --- ---
Sp. T
--- K1 --- --- --- --- --- --- K1 --- --- --- --- ---
v sin i
(km/s)
2.7±1.0
2.13+0.96-0.92
 --- --- --- --- --- 1.76±0.86 --- --- --- --- --- ---
Age
(Gyr)
--- >0.6 --- --- --- --- --- >0.6 --- --- --- --- --- ---
S Index
0.2097 --- --- --- --- --- --- --- --- --- --- --- --- ---
CAII LOG RHK
-4.843 --- --- --- --- --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
K2 Names
K2 Planets and Candidates
Transit
Source Howard et al. 2025 Bourrier et al. 2023 Castro-González et al. 2022 Livingston et al. 2018 Mayo et al. 2018 Narita et al. 2017 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Pope et al. 2016 Barros et al. 2016
a/R✶
--- 17.39±0.19
18.48+0.85-2.57
17.72+1.11-3.01
17.934967 +1.092509-2.135023
17.96+0.91-2.34
17.9 +2.9-1.3
--- --- --- ---
P
(days)
8.26726±0.00018 8.2669897±0.0000057
8.2669928+0.0000070-0.0000067
8.267704+0.000350-0.000318
8.266790 +0.000138-0.000133
8.266902±0.000070 8.26698±0.00013
8.267084 +0.000258-0.000254
8.2669589±0.0000523 8.267 8.26345949
Rp
(R⨁)
3.40+0.12-0.05
 ---
3.59+0.11-0.07
 3.37±0.12
3.40690333698 +0.234078330667-0.148776335806
3.59+0.44-0.39
3.55 +0.11-0.31
3.5 +0.4-0.2
3.448070±0.224015 --- ---
Rp
(RJup)
0.303+0.011-0.004
 ---
0.320+0.010-0.006
 0.301±0.011
0.3039435576 +0.0208830699-0.0132729357
0.369+0.039-0.034
0.317 +0.0098-0.028
0.31 +0.04-0.02
0.3076167±0.0199853 --- ---
Rp/R✶
--- 0.03332±0.00067
0.0339+0.0010-0.0005
0.0339+0.0016-0.0007
0.034367 +0.000861-0.000656
0.03472+0.00133-0.00067
0.03439 +0.00095-0.00287
0.0328 +0.0019-0.0007
--- 0.032454 ---
δ
(%)
--- --- --- --- --- --- 0.1338±0.0017 --- 0.13160000±0.00586805 0.1053 0.129±0.003
T14
(hours)
--- 3.43±0.03 --- --- ---
3.4622+0.0538-0.0487
3.41040+0.06000-0.07440
3.40080+0.06000-0.05040
 3.328±0.529 3.21600
3.70400+0.14000-0.14000
TC
(days)
2457147.98867±0.00079
(BJD)
2458363.23873+0.00069-0.00063
(BJD-TDB)
2457147.9895717+0.0004439-0.0004516
(BJD)
2457147.98708+0.00148-0.00164
(BJD)
2457147.99178 +0.000641-0.000677
2457147.99107±0.00117
(BJD)
2457139.72408 +0.00071-0.00074
(BJD)
2457147.99035 +0.001175-0.001156
(BJD)
2460256.3671810±0.0150878
(BJD)
2457139.723
(BJD)
2457148.00308
(BJD)
i
(deg)
--- 88.62±0.10 --- ---
88.865330 +0.739242-0.938780
88.95+0.73-1.07
 --- --- --- --- ---
Teq
(K)
805.0+22.0-23.0
 ---
928+1-23
 814±12 --- --- --- --- 958 --- ---
b
--- 0.42±0.03
0.31+0.26-0.21
0.36+0.28-0.25
 ---
0.328+0.249-0.225
 ---
0.38 +0.29-0.27
--- 0.139 ---
a
(au)
--- ---
0.0833+0.0039-0.0116
 0.0796±0.0007 --- 0.081±0.006 --- --- --- --- ---
S
(S⨁)
100.0+12.0-11.0
 --- --- --- --- --- --- --- 140.125 --- ---
Mp
(M⨁)
15.4±4.4 --- --- --- --- 30±19 --- --- --- --- ---
Mp
(MJup)
0.0485±0.0138 --- --- --- --- 0.094±0.060 --- --- --- --- ---
ρ
(g/cm3)
2.24+0.77-0.68
 --- --- --- --- --- --- --- --- --- ---
K
(m/s)
--- 9.40±5.80 --- --- --- 9.40±5.80 --- --- --- --- ---
ω
(deg)
--- 90 --- --- --- --- --- --- --- --- ---
e
--- 0 --- --- --- --- --- --- --- --- ---
λ
(deg)
---
-81.0+50.0-47.0
 --- --- --- --- --- --- --- --- ---
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
  • 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.