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K2-188 Overview

  • Star: K2-188
    • Stellar Radius: 1.11 Solar Radius
    • Stellar Effective Temperature: 5982.00 K
    • Planet: K2-188 b
      • Disposition Confirmed
      • Planet Radius 0.120 Jupiter Radius
    • Planet: K2-188 c
      • Disposition Confirmed
      • Planet Radius 0.252 Jupiter Radius

K2-188 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-188
K2-188 b 1.74 d 1.35 R⨁ Transit 2018 Mayo et al. 2018 Confirmed Planet
K2-188 c 7.81 d 2.83 R⨁ Transit 2018 Mayo et al. 2018 Confirmed Planet
K2-188 K2-188 b K2-188 c
RA
08h39m15.29s
Dec
+23d21m26.77s
Distance
446.821+8.707-8.385
pc
Parallax
2.2097300±0.0424739 mas
Ecliptic Latitude
4.77514 deg
Ecliptic Longitude
126.1438 deg
Galactic Latitude
33.44489 deg
Galactic Longitude
201.65994 deg
Total Proper Motion
16.7652765±0.0625128 mas/yr
Proper Motion (RA)
13.1762000±0.0702477 mas/yr
Proper Motion (Dec)
-10.366400±0.047422 mas/yr
Photometry
mV 12.657±0.092
mTESS 12.0789±0.0069
mJ 11.502±0.020
mH 11.246±0.018
mKs 11.149±0.022
mKep 12.704
mW1 11.121±0.022
mW2 11.190±0.021
mW3 11.286±0.214
mW4 8.797
mGaia 12.490300±0.000144
mB 13.219±0.015
mg 12.9520000±0.0009646
mi 12.440500±0.001002
mr 12.5372000±0.0009478
mu 15.4736000±0.0102688
mz 14.0147000±0.0141738
Abundances
(Hypatia Catalog)
[Fe/H] -0.02±0.05 dex
[C/H] -0.07±0.09 dex
[Na/H] -0.18±0.04 dex
[Mg/H] -0.01±0.03 dex
[Al/H] -0.11±0.06 dex
[Ca/H] -0.02±0.06 dex
[BaII/H] -0.04±0.19 dex
Mission
K2: Observed in Campaigns 5, 16, 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 TICv8 Livingston et al. 2018 Gaia DR2 Mayo et al. 2018 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Pope et al. 2016 Barros et al. 2016
Teff
(K)
5906.9000+99.5434-116.5890
 5977±87
5904.500+232.865-48.000
 5982.0±50.0 --- --- 5906.9±108.1 --- ---
Metallicity
(dex)
-0.0630±0.0410 [M/H] -0.01±0.05 [Fe/H] --- 0.16±0.08 [Fe/H] --- --- --- --- ---
M✶
(M⦿)
1.070000+0.167147-0.119452
 1.06±0.03 ---
1.106611 +0.031235-0.024977
--- --- --- --- ---
R✶
(R⦿)
1.2172200+0.0525226-0.0626332
 1.19±0.03
1.1811850+0.0194415-0.0879330
1.109202 +0.107813-0.063121
1.181 +0.088-0.019
1.19 1.22±0.06 --- ---
log g
(log10(cm/s2))
4.2967100+0.0645080-0.0921618
 4.31±0.03 --- 4.36±0.1 --- --- 4.30±0.08 --- ---
L✶
(log10(L⦿))
0.21087100+0.02408453-0.01968954
 ---
0.18406309+0.01182931-0.01216053
 --- --- --- --- --- ---
γ
(km/s)
--- --- -34.20696890406417±1.37159489368993 --- --- --- --- --- ---
ρ✶
(g/cm3)
0.83645560+0.21952550-0.13870410
 --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Livingston et al. 2018 Mayo et al. 2018
a/R✶
4.67+0.74-1.07
4.724953 +0.757810-1.659174
i
(deg)
---
83.928152 +4.435603-9.890217
P
(days)
1.742169+0.000457-0.000365
1.742983 +0.000256-0.000260
Rp
(R⨁)
1.35±0.11
1.25908622223 +0.164118029845-0.112933410057
Rp
(RJup)
0.120±0.010
0.1123281490 +0.0146416299-0.0100752440
Rp/R✶
0.0104+0.0009-0.0008
0.010407 +0.000904-0.000722
TC
(days)
2457140.47617+0.00719-0.00832
(BJD)
2457142.21335 +0.004960-0.004669
Teq
(K)
1692+33-32
 ---
b
0.40+0.32-0.27
 ---
a
(au)
0.0289±0.0003 ---
Print
Status
Confirmed Planet
Detected By
Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
K2 Names
K2 Planets and Candidates
Transit
Source Livingston et al. 2018 Mayo et al. 2018 Kruse et al. 2019 Petigura et al. 2018 ExoFOP Pope et al. 2016 Barros et al. 2016
b
0.37+0.32-0.26
 --- ---
0.46 +0.32-0.30
--- 0.204 ---
P
(days)
7.810253+0.000846-0.000844
7.807595 +0.000564-0.000597
7.80905±0.00054
7.809757 +0.000841-0.000827
7.8092052±0.0000171 7.809 7.81110453
Rp/R✶
0.0218+0.0012-0.0008
0.021697 +0.001430-0.000822
0.0217 +0.0013-0.0032
0.0224 +0.0025-0.0011
--- 0.020497 ---
δ
(%)
--- ---
0.052 +0.0021-0.0022
--- 0.0480000000±0.0000101394 0.042 0.034±0.004
T14
(hours)
--- ---
3.69600+0.14400-0.16800
3.58080+0.13920-0.12960
 3.393±0.534 3.40296
3.43300+0.78000-0.78000
TC
(days)
2457144.85447+0.00397-0.00419
(BJD)
2457144.86605 +0.002563-0.002623
2457144.8589 +0.0027-0.0026
(BJD)
2457144.85632 +0.004011-0.004260
(BJD)
2459550.0965640±0.0039616
(BJD)
2457144.86
(BJD)
2457144.859822
(BJD)
Rp
(R⨁)
2.83±0.15
2.62511304037 +0.308255567914-0.179477909427
2.79 +0.27-0.41
2.9 +0.5-0.3
2.708890±0.135045 --- ---
Rp
(RJup)
0.252±0.013
0.2341968990 +0.0275007198-0.0160119466
0.249 +0.024-0.037
0.26 +0.04-0.03
0.2416714±0.0120479 --- ---
a/R✶
15.56+1.31-3.41
15.210352 +2.138244-4.824225
14.5 +4.5-2.0
--- --- --- ---
Teq
(K)
1026±20 --- --- --- 1085 --- ---
a
(au)
0.0785±0.0008 --- --- --- --- --- ---
S
(S⨁)
--- --- --- --- 230.628 --- ---
i
(deg)
---
88.097624 +1.399838-2.577581
--- --- --- --- ---
Print
Known Objects
2 Confirmed Planets
3 K2 Targets
1 2MASS Point Source Catalog
Data Files
1 SuperWASP Time Series
1 KELT Praesepe Time Series
2 K2 Time Series
2 Associated Literature Data
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