K2-8 Overview

K2-8 0.80 R_⦿ 5147.00 K

K2-8 c

0.215 R_Jup

K2-8 b

0.319 R_Jup

Overview System Parameters Nearby Data Legend

Architecture: K2-8; K2-8

Other Data: Bibliography 11; Nearby Data 5

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
K2-8	K2-8 c	Transit	2016	Sinukoff et al. 2016	Confirmed Planet
K2-8	K2-8 b	Transit	2015	Montet et al. 2015	Confirmed Planet

K2-8 Stellar Parameters (9 Solutions)

RA: 11h19m10.44s

Dec: -00d17m03.98s

Distance: 403.5130±11.6715 pc

Parallax: 2.4513700±0.0710901 mas

Ecliptic Latitude: -4.30342 deg

Ecliptic Longitude: 170.73206 deg

Galactic Latitude: 54.74227 deg

Galactic Longitude: 260.18944 deg

Total Proper Motion: 39.3839143±0.0756667 mas/yr

Proper Motion (RA): -36.0233000±0.0788831 mas/yr

Proper Motion (Dec): -15.9190000±0.0563912 mas/yr

Photometry: m_V
14.801±0.320; m_TESS
13.7067±0.0068; m_J
12.829±0.026; m_H
12.318±0.030; m_Ks
12.245±0.030; m_Kep
14.384; m_W1
12.159±0.022; m_W2
12.215±0.024; m_W3
11.78; m_W4
8.796; m_Gaia
14.335800±0.000396; m_B
15.726±0.021; m_g
15.1129000±0.0036593; m_i
14.303300±0.001061; m_r
14.2809000±0.0040471; m_u
17.3307000±0.0101663; m_z
13.8451000±0.0045932

Abundances (Hypatia Catalog): [Fe/H] -0.02±0.04 dex; [C/H] -0.05±0.09 dex; [O/H] -0.17±0.09 dex; [Na/H] -0.12±0.04 dex; [Mg/H] 0.03±0.07 dex; [Al/H] -0.08±0.06 dex; [Si/H] -0.10±0.05 dex; [Ca/H] 0.02±0.06 dex; [Y/H] -0.01±0.08 dex

Mission: K2 : Observed in Campaign 1

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

Source	TICv8	Gaia DR2	Crossfield et al. 2016	Sinukoff et al. 2016	Montet et al. 2015	Kruse et al. 2019	Kruse et al. 2019	Barros et al. 2016	Vanderburg et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	4779.0±25.0	4849.1953+202.8050-123.8120	5147±213	4870±60	4890+38-58	---	---	---	4797
M_✶ (M_⦿)	0.77	---	0.840±0.060	0.78±0.04	0.79+0.03-0.04	---	---	---	---
R_✶ (R_⦿)	0.771581	0.7244564+0.0384612-0.0569968	0.800±0.060	0.74±0.04	0.74+0.02-0.03	0.712 +0.064-0.028	0.712 +0.064-0.028	---	0.73
log g (log₁₀(cm/s²))	4.5498	---	4.562±0.044	4.52±0.10	---	---	---	---	---
L_✶ (log₁₀(L_⦿))	-0.5531940	-0.58260200+0.02577410-0.02740076	---	---	---	---	---	---	---
Metallicity (dex)	0.010±0.100 [M/H]	---	---	-0.02±0.04 [Fe/H]	-0.010+0.110-0.130 [Fe/H]	---	---	---	---
v sin i (km/s)	---	---	---	<2	---	---	---	---	---
Sp. T	---	---	---	K3 V	---	---	---	---	---
ρ_✶ (g/cm³)	2.3632636	---	---	---	---	---	---	---	---

K2-8 c Planetary Parameters (5 Solutions)

Status: Confirmed Planet
Detected By: Transit

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

Source	Sinukoff et al. 2016	Crossfield et al. 2016	Kruse et al. 2019	Vanderburg et al. 2016	Montet et al. 2015	Show Candidate Solutions >>	<< Hide Candidate Solutions
a/R_✶	13.50+6.87-4.82	---	21.1 +5.8-2.8	---	15.49±0.49
T_eq (K)	801±23	---	---	---	877.0±17.0
P (days)	5.06416±0.00041	5.06408±0.00093	5.06347 +0.00026-0.00023	5.0639064	5.06468±0.00063
R_p (R_⨁)	2.41±0.33	2.44±0.35	2.32 +0.26-0.30	2.46	2.31±0.33
R_p (R_Jup)	0.215±0.029	0.218±0.031	0.207 +0.023-0.03	0.219	0.206±0.029
T_C (days)	2456813.0707±0.0033	2456813.0723±0.0070	2456813.0722 +0.0019-0.0021	2456813.071	2456813.0663±0.0071
S (S_⨁)	97.80±11.40	135±31	---	---	---
R_p/R_✶	0.02990±0.00385	0.0279±0.0034	0.0299 +0.0019-0.0036	0.02909	---
a (au)	0.0532±0.0009	0.0545±0.0013	---	---	---
T₁₄ (hours)	2.080+0.498-0.253	1.70±0.26	1.68240+0.08880-0.10800	1.81000	---
b	0.78+0.12-0.42	---	---	0.58	---
δ (%)	---	---	0.0993 +0.005-0.0052	0.0953	---
i (deg)	86.70±2.48	---	---	---	---

K2-8 b Planetary Parameters (6 Solutions)

Status: Confirmed Planet
Detected By: Transit

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

Source	Sinukoff et al. 2016	Crossfield et al. 2016	Montet et al. 2015	Kruse et al. 2019	Barros et al. 2016	Vanderburg et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
P (days)	10.35239±0.00086	10.3535±0.0015	10.35176±0.00133	10.35160 +0.00079-0.00074	10.35848367	10.353263
δ (%)	---	---	0.078	0.147 +0.0081-0.0084	0.149±0.014	0.150
T₁₄ (hours)	3.362±0.885	2.43±0.29	---	2.44800+0.16800-0.28800	3.26300+0.24300-0.24300	2.41000
T_C (days)	2456813.6114±0.0030	2456813.6087±0.0060	2456813.6119±0.0053	2456813.6125±0.0025	2456813.595802	2456813.610
a/R_✶	14.10+15.00-3.48	---	24.94±0.79	28.3 +12.1-5.6	---	---
R_p (R_⨁)	3.58±0.71	3.32±0.50	2.97±0.51	2.86 +0.37-0.66	---	3.09
R_p (R_Jup)	0.319±0.063	0.296±0.045	0.265±0.045	0.255 +0.033-0.059	---	0.276
R_p/R_✶	0.04457±0.00861	0.0377±0.0048	---	0.0368 +0.0035-0.0083	---	0.03636
S (S_⨁)	37.7±4.4	52±12	---	---	---	---
a (au)	0.0856±0.0014	0.0877±0.0021	0.0856±0.0012	---	---	---
T_eq (K)	631±18	---	691±14	---	---	---
b	0.880+0.040-0.360	---	---	---	---	0.58
i (deg)	86.42+2.56-1.37	---	---	---	---	---

Nearby Data (5 Data Types 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 (11 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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