K2-398 Overview

K2-398 1.27 R_⦿ 5945.82 K

K2-398 b

0.203 R_Jup

K2-398 c

0.455 R_Jup

Overview Parameters Nearby Data Bibliography 6 Legend

Architecture: K2-398; K2-398

Discovery Data

Host	Planet	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-398	K2-398 b	6.39 d	2.27 R_⨁	Transit	2022	Christiansen et al. 2022	Confirmed Planet
K2-398	K2-398 c	18.79 d	5.1 R_⨁	Transit	2022	Christiansen et al. 2022	Confirmed Planet

K2-398 Stellar Parameters (3 Solutions)

RA: 10h46m56.39s

Dec: +01d56m12.14s

Distance: 606.992+13.070-12.539
pc

Parallax: 1.6187900±0.0344879 mas

Ecliptic Latitude: -5.37019 deg

Ecliptic Longitude: 162.40901 deg

Galactic Latitude: 50.97268 deg

Galactic Longitude: 247.80615 deg

Total Proper Motion: 22.9353170±0.0535815 mas/yr

Proper Motion (RA): -22.9353000±0.0535815 mas/yr

Proper Motion (Dec): -0.0279032±0.0422638 mas/yr

Photometry: m_V
13.287±0.149; m_TESS
12.6036±0.0070; m_J
12.034±0.021; m_H
11.717±0.022; m_Ks
11.717±0.021; m_Kep
12.991; m_W1
11.627±0.022; m_W2
11.670±0.022; m_W3
11.613±0.249; m_W4
8.796; m_Gaia
13.009100±0.000439; m_B
13.738±0.050; m_g
14.9002000±0.0052013; m_i
13.0536000±0.0035682; m_r
13.115700±0.001659; m_u
15.192700±0.005993; m_z
13.3944000±0.0062319

Mission: K2 : Observed in Campaign 14

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

Source	Christiansen et al. 2022	TICv8	Zink et al. 2021	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	5946±20	5945.820+109.790-109.017	5946.0±20.0
L_✶ (log₁₀(L_⦿))	---	0.25965551+0.02096363-0.02434777	---
Metallicity (dex)	-0.257±0.019 [Fe/H]	-0.257±0.019 [M/H]	-0.257±0.019 [Fe/H]
ρ_✶ (g/cm³)	---	0.7488955+0.1710147-0.1356015	---
M_✶ (M_⦿)	0.9450+0.0900-0.0830	1.090000+0.144184-0.130161	0.9450+0.0900-0.0830
R_✶ (R_⦿)	1.239+0.032-0.030	1.2707400+0.0550739-0.0659814	1.2390+0.0320-0.0300
log g (log₁₀(cm/s²))	4.227±0.034	4.2673800+0.0625619-0.0870473	4.2270±0.0340
Sp. T	---	---	G2

K2-398 b Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	Christiansen et al. 2022	Zink et al. 2021	Show Candidate Solutions >>	<< Hide Candidate Solutions
a/R_✶	11.59+0.43-0.46	11.59+0.43-0.46
b	0.523+0.073-0.086	0.523+0.073-0.086
P (days)	6.393025+0.001139-0.000750	6.393025+0.001139-0.000750
R_p (R_⨁)	2.274+0.113-0.111	2.274+0.113-0.111
R_p (R_Jup)	0.2029+0.0101-0.0099	0.2029+0.0101-0.0099
R_p/R_✶	0.0168±0.0010	0.0168±0.0010
T₁₄ (hours)	---	3.7
T_C (days)	2457909.0449+0.0042-0.0048 (JD)	2457909.044877+0.004229-0.004815 (BJD)

K2-398 c Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	Christiansen et al. 2022	Zink et al. 2021	Show Candidate Solutions >>	<< Hide Candidate Solutions
a/R_✶	23.55+0.92-0.89	23.55+0.92-0.89
b	0.701+0.028-0.031	0.701+0.028-0.031
P (days)	18.787839+0.000877-0.000993	18.787839+0.000877-0.000993
R_p (R_⨁)	5.098+0.154-0.146	5.098+0.154-0.146
R_p (R_Jup)	0.4548+0.0137-0.0130	0.4548+0.0137-0.0130
R_p/R_✶	0.0377±0.0010	0.0377±0.0010
T₁₄ (hours)	---	4.7
T_C (days)	2457911.6845+0.0015-0.0016 (JD)	2457911.684505+0.001510-0.001606 (BJD)

Nearby Data (within 30 arcseconds)

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

Data Files: 1 K2 Time Series; 2 Associated Literature Data

Bibliography (6 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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