K2-146 Overview

K2-146 0.35 R_⦿ 3385.00 K

K2-146 b

0.183 R_Jup

K2-146 c

0.195 R_Jup

Overview Notes System Parameters Nearby Data Legend

Architecture: K2-146; K2-146

Other Data: Bibliography 14; Exoplanet Archive Notes 1; Nearby Data 6

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
K2-146	K2-146 b	Transit	2018	Hirano et al. 2018	Confirmed Planet
K2-146	K2-146 c	Transit	2019	Hamann et al. 2019	Confirmed Planet

Exoplanet Archive Notes (1)

K2-146 c

Planet also independently announced in this ref. (Lam et al. 2020)

K2-146 Stellar Parameters (11 Solutions)

RA: 08h40m06.41s

Dec: +19d05m32.43s

Distance: 79.3002+0.4780-0.4723
pc

Parallax: 12.5821000±0.0749898 mas

Ecliptic Latitude: 0.70247 deg

Ecliptic Longitude: 127.4315 deg

Galactic Latitude: 32.21884 deg

Galactic Longitude: 206.52797 deg

Total Proper Motion: 129.9980836±0.0777051 mas/yr

Proper Motion (RA): -15.916700±0.117628 mas/yr

Proper Motion (Dec): -129.0200000±0.0769376 mas/yr

Photometry: m_V
16.7±0.2; m_TESS
13.7247000±0.0073796; m_J
12.183±0.021; m_H
11.605±0.018; m_Ks
11.370±0.023; m_Kep
15.031; m_W1
11.175±0.023; m_W2
11.030±0.021; m_W3
10.980±0.191; m_W4
8.451; m_Gaia
14.983400±0.000523; m_B
17.873±0.168

Mission: K2 : Observed in Campaigns 5, 16, 18

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

Source	Lam et al. 2020	TICv8	Hamann et al. 2019	Livingston et al. 2018	Gaia DR2	Hirano et al. 2018	Kruse et al. 2019	Petigura et al. 2018	Dressing et al. 2017	Libralato et al. 2016	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	3385±70	3359.0±157.0	3385±70	3398±47	3679.00+370.46-421.00	3385±70	---	---	---	---	---
L_✶ (log₁₀(L_⦿))	-1.8+0.1-0.1	-1.91475+0.09670-0.12459	---	---	---	-1.8+0.1-0.1	---	---	---	---	---
Metallicity (dex)	-0.020±0.120 [Fe/H]	---	---	-0.010±0.150 [Fe/H]	---	-0.020±0.120 [Fe/H]	---	---	---	---	---
M_✶ (M_⦿)	0.358±0.042	0.3061610±0.0203377	0.331±0.009	0.33±0.01	---	0.358±0.042	---	---	---	---	---
R_✶ (R_⦿)	0.350±0.035	0.3257290±0.0099422	0.330±0.010	0.33±0.01	---	0.350±0.035	0.226 +0.040-0.049	0.50	---	0.225	---
log g (log₁₀(cm/s²))	4.906±0.041	4.8983000±0.0023719	---	4.92±0.01	---	4.906±0.041	---	---	---	---	---
Sp. T	M3.0 V	---	---	---	---	M3.0 V	---	---	---	---	---
ρ_✶ (g/cm³)	---	12.4895384±0.3128997	13.1±1.1	2.352+5.371-2.030	---	---	---	---	---	---	---
Age (Gyr)	---	---	5+4-2	---	---	---	---	---	---	---	---
γ (km/s)	40.6±0.2	---	---	---	---	---	---	---	---	---	---
v sin i (km/s)	<2.00	---	---	---	---	---	---	---	---	---	---

K2-146 b Planetary Parameters (9 Solutions)

Status: Confirmed Planet
Detected By: Transit Timing Variations, Transit

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

Source	Hamann et al. 2019	Lam et al. 2020	Livingston et al. 2018	Hirano et al. 2018	Kruse et al. 2019	Petigura et al. 2018	Dressing et al. 2017	Libralato et al. 2016	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
a/R_✶	---	15.250±0.126	9.540+5.310-4.080	15.5+0.9-2.5	14.0 +4.2-2.4	---	14.03	---	---
S (S_⨁)	---	---	---	20.7±4.8	---	---	---	---	---
P (days)	2.64460±0.00006	2.6698±0.0001	2.644661+0.000132-0.000130	2.644646±0.000043	2.643528 +0.000058-0.000061	2.644845 +0.000128-0.000137	2.64484±0.00011	2.644259±0.000047	2.645
R_p (R_⨁)	2.05±0.06	2.25±0.10	2.15±0.86	2.20±0.23	1.47 +0.28-0.37	10.7 +24.3-8.4	1.83 +0.25-0.21	1.38	---
R_p (R_Jup)	0.183±0.005	0.201±0.009	0.192±0.077	0.196±0.021	0.131 +0.025-0.033	0.95 +2.17-0.75	0.163 +0.022-0.019	0.123	---
R_p/R_✶	0.0572±0.0005	0.0589±0.0014	0.05980+0.04240-0.00630	0.0577+0.0021-0.0012	0.0595 +0.0043-0.0079	0.1951 +0.4378-0.1330	0.052 +0.002-0.001	0.0563±0.0005	0.048634
a (au)	---	0.0248±0.0002	0.0259±0.0002	0.0266±0.0010	---	---	---	---	---
T_C (days)	2458204.5902±0.0005	2458300.4345±0.0007	2457144.64233+0.00169-0.00176	2457139.35327±0.00085	2457142.00628 +0.00085-0.00077	2457144.64143 +0.001724-0.001696	2457144.641±0.001	2457142.002608±0.000650	2457141.999
δ (%)	---	---	---	---	0.386 +0.011-0.012	---	---	0.3274±0.0167	0.2365
T₁₄ (hours)	---	---	---	---	1.32000+0.07200-0.10800	1.53120+0.24960-1.53120	---	---	1.40400
T_eq (K)	---	---	534±10	---	---	---	---	---	---
b	---	0.391±0.069	0.800+0.190-0.470	---	---	1.13 +0.52-0.29	---	---	0
ω (deg)	-64±6	191+11-15	---	---	---	---	---	---	---
M_p (M_⨁)	5.77±0.18	5.6±0.7	---	---	---	---	---	---	---
M_p (M_Jup)	0.01816±0.00024	0.018±0.002	---	---	---	---	---	---	---
e	0.129±0.019	0.14±0.07	---	---	---	---	---	---	---
i (deg)	88.93±0.11	88.5±0.3	---	---	---	---	88.79	90.00±0.12	---
ρ (g/cm³)	3.69±0.21	2.702±0.494	---	---	---	---	---	---	---

K2-146 c Planetary Parameters (2 Solutions)

Status: Confirmed Planet
Detected By: Transit Timing Variations, Transit

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

Source	Hamann et al. 2019	Lam et al. 2020
ω (deg)	130±5	2.0+12.0-10.0
M_p (M_⨁)	7.49±0.24	7.1±0.9
M_p (M_Jup)	0.02358±0.00031	0.022±0.003
e	0.075±0.016	0.16±0.07
i (deg)	87.54±0.04	87.3±0.3
P (days)	4.00498±0.00011	3.96630+0.00020-0.00002
ρ (g/cm³)	3.92±0.27	2.246+1.883-1.846
R_p (R_⨁)	2.19±0.07	2.59+1.81-0.39
R_p (R_Jup)	0.195±0.006	0.231+0.161-0.035
R_p/R_✶	0.0612±0.0009	0.06800+0.12260-0.02540
T_C (days)	2458204.1316±0.0007	2458299.6019±0.0009
a/R_✶	---	20.064±0.412
b	---	0.9300±0.0970
a (au)	---	0.0327±0.0006

Nearby Data (6 Data Types within 30 arcseconds)

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

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

Bibliography (14 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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