K2-198 Overview

K2-198 0.76 R_⦿ 5212.90 K

K2-198 c

0.127 R_Jup

K2-198 d

0.218 R_Jup

K2-198 b

0.374 R_Jup

Overview Notes System Parameters Nearby Data Legend

Architecture: K2-198; K2-198

Other Data: Bibliography 10; Exoplanet Archive Notes 2; Nearby Data 5

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
K2-198	K2-198 c	Transit	2019	Hedges et al. 2019	Confirmed Planet
K2-198	K2-198 d	Transit	2019	Hedges et al. 2019	Confirmed Planet
K2-198	K2-198 b	Transit	2018	Mayo et al. 2018	Confirmed Planet

Exoplanet Archive Notes (2)

K2-198 d

Candidate identifier changed to match previous publication. (Kruse et al. 2019)

K2-198 b

Candidate identifier changed to match previous publication. (Mayo et al. 2018)

K2-198 Stellar Parameters (7 Solutions)

RA: 13h15m22.48s

Dec: -06d27m53.96s

Distance: 110.567+0.874-0.860
pc

Parallax: 9.0162900±0.0703871 mas

Ecliptic Latitude: 1.39558 deg

Ecliptic Longitude: 199.83277 deg

Galactic Latitude: 55.91096 deg

Galactic Longitude: 313.5829 deg

Total Proper Motion: 42.7234233±0.0871049 mas/yr

Proper Motion (RA): -36.6880000±0.0942455 mas/yr

Proper Motion (Dec): -21.8925000±0.0628532 mas/yr

Photometry: m_V
10.971±0.015; m_TESS
10.4556±0.0065; m_J
9.741±0.024; m_H
9.313±0.024; m_Ks
9.228±0.021; m_Kep
11.022; m_W1
9.179±0.023; m_W2
9.216±0.021; m_W3
9.157±0.031; m_W4
8.438; m_Gaia
10.995500±0.001421; m_B
11.798±0.203

Mission: K2 : Observed in Campaigns 6, 17

Tools: ExoFOP Target Overview Page; IRSA Finding Chart; K2 Names; K2 Planets and Candidates; K2 Targets; Stellar Hosts; K2 Time Series

Source	TICv8	Hedges et al. 2019	Gaia DR2	Mayo et al. 2018	Kruse et al. 2019	Kruse et al. 2019	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	5183.840+146.864-92.652	5212.9+99.0-49.2	5114.0+114.0-113.6	5262.0±50.0	---	---	---
M_✶ (M_⦿)	0.879000+0.112729-0.103426	0.799+0.091-0.045	---	0.835734 +0.028994-0.029287	---	---	---
R_✶ (R_⦿)	0.7815010+0.0352598-0.0542879	0.757+0.035-0.016	0.8007802+0.0367978-0.0345424	0.778475 +0.030929-0.024117	0.801 +0.035-0.037	0.801 +0.035-0.037	---
L_✶ (log₁₀(L_⦿))	-0.4008394+0.0103517-0.0167710	---	-0.40323582+0.00432995-0.00437353	---	---	---	---
γ (km/s)	---	---	2.073953546979441±0.593181228914973	---	---	---	---
Metallicity (dex)	0.0940±0.0570 [M/H]	---	---	-0.16±0.08 [Fe/H]	---	---	---
log g (log₁₀(cm/s²))	4.5962000+0.0892236-0.0791034	---	---	4.63±0.1	---	---	---
ρ_✶ (g/cm³)	2.5963643+0.8197125-0.4285703	---	---	---	---	---	---

K2-198 c Planetary Parameters (2 Solutions)

Status: Confirmed Planet
Detected By: Transit

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	Hedges et al. 2019	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
b	0.715+0.030-0.012	0.054
P (days)	3.3596055+0.0000040-0.0000021	3.359
R_p/R_✶	0.01300+0.00037-0.00032	0.0133
δ (%)	---	0.018
T₁₄ (hours)	---	1.42008
T_C (days)	2457215.0320+0.0019-0.0017	2457218.397
a/R_✶	8.76+0.32-0.16	---
T_eq (K)	1229.9+32.2-15.9	---
i (deg)	86.494+0.268-0.088	---
R_p (R_⨁)	1.423+0.081-0.036	---
R_p (R_Jup)	0.1270+0.0072-0.0032	---

K2-198 d Planetary Parameters (4 Solutions)

Status: Confirmed Planet
Detected By: Transit

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	Hedges et al. 2019	Kokori et al. 2023	Kruse et al. 2019	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
a/R_✶	14.90+0.55-0.28	19.5±1.5	15.8 +4.8-3.6	---
P (days)	7.4500177+0.0000052-0.0000026	7.4500372±0.0000047	7.44976 +0.00015-0.00016	7.450
R_p (R_⨁)	2.438+0.130-0.056	---	2.82 +0.22-0.32	---
R_p (R_Jup)	0.2175+0.0116-0.0050	---	0.252 +0.020-0.029	---
R_p/R_✶	0.02200+0.00057-0.00050	0.02200±0.00057	0.0323 +0.0020-0.0034	0.0261
δ (%)	---	---	0.1082 +0.0019-0.002	0.0681
T₁₄ (hours)	---	---	3.00240+0.08640-0.13200	2.61000
T_C (days)	2457213.5759±0.0010	2457824.48087±0.00030	2457221.02659 +0.00084-0.00083	2457221.023
T_eq (K)	943.2+24.7-12.2	---	---	---
b	0.0470+0.2260-0.1040	---	---	0.003
i (deg)	89.86+0.68-0.30	89.86+0.68-0.30	---	---

K2-198 b Planetary Parameters (5 Solutions)

Status: Confirmed Planet
Detected By: Transit

Tools: Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	Hedges et al. 2019	Kokori et al. 2023	Mayo et al. 2018	Kruse et al. 2019	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
b	0.6610+0.0320-0.0099	---	---	---	0.066
P (days)	17.0428683+0.0000071-0.0000035	17.042849±0.000010	17.043179 +0.000322-0.000306	17.04354 +0.00026-0.00025	17.043
R_p/R_✶	0.03900+0.00100-0.00088	0.0485±0.0023	0.048502 +0.002311-0.001386	0.0490 +0.0015-0.0034	0.041673
δ (%)	---	---	---	0.2737±0.004	0.1737
T₁₄ (hours)	---	---	---	2.95920+0.05280-0.07200	2.58096
T_C (days)	2457204.56870±0.00014	2457784.02605±0.00028	2457221.61179 +0.000726-0.000737	2457221.61111 +0.00054-0.00055	2457221.61
a/R_✶	25.86+0.95-0.48	42.0+4.1-8.4	42.001955 +4.104291-8.357616	43.0 +6.9-3.3	---
R_p (R_⨁)	4.189+0.228-0.098	---	4.1185027086 +0.255498531296-0.173584992406	4.28 +0.23-0.36	---
R_p (R_Jup)	0.3737+0.0203-0.0087	---	0.3674282013 +0.0227940522-0.0154862158	0.382 +0.021-0.032	---
T_eq (K)	715.80+18.72-9.26	---	---	---	---
i (deg)	88.904+0.094-0.027	89.4+0.4-0.6	89.396894 +0.412902-0.595465	---	---

Nearby Data (5 Data Types within 30 arcseconds)

Known Objects: 3 Confirmed Planets; 2 K2 Targets; 1 2MASS Point Source Catalog

Data Files: 2 K2 Time Series; 3 Associated Literature Data

Bibliography (10 References)

System

Star

Confirmed

Candidate

False Positive Planet

Controversial

False Positive

Aliases

Data Access

Transit Prediction Service

Time Series

Kepler | K2

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