K2-131 | NASA Exoplanet Archive

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-131
K2-131 b	0.37 d	1.69 R_⨁	Transit	2017	Dai et al. 2017	Confirmed Planet

K2-131 Stellar Parameters (9 Solutions)

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RA: 12h11m00.34s

Dec: -09d45m54.86s

Distance: 152.509+1.079-1.063
pc

Parallax: 6.5285100±0.0456876 mas

Ecliptic Latitude: -7.86259 deg

Ecliptic Longitude: 186.42232 deg

Galactic Latitude: 51.82615 deg

Galactic Longitude: 286.68054 deg

Total Proper Motion: 39.8487450±0.0909938 mas/yr

Proper Motion (RA): -39.4851000±0.0911357 mas/yr

Proper Motion (Dec): -5.3711600±0.0829632 mas/yr

Photometry: m_V
12.129±0.092; m_TESS
11.3328±0.0061; m_J
10.570±0.026; m_H
10.122±0.022; m_Ks
10.051±0.026; m_Kep
11.937; m_W1
9.950±0.024; m_W2
9.9970±0.0210; m_W3
9.907±0.057; m_W4
8.667; m_Gaia
11.899900±0.000602; m_B
13.054±0.036

Mission: K2 : Observed in Campaign 10

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	Bonomo et al. 2023	Adams et al. 2021	TICv8	Dai et al. 2019	Livingston et al. 2018	Gaia DR2	Mayo et al. 2018	Dai et al. 2017	ExoFOP
T_eff (K)	5120±71	5200±100	5129.000+138.532-119.522	5200±100	5245+46-52	5048.25+228.70-68.83	5113.0±50.0	5200±100	5129.000±129.027
Metallicity (dex)	-0.040±0.070 [Fe/H]	-0.02±0.08 [Fe/H]	---	-0.02±0.08 [Fe/H]	-0.17±0.03 [Fe/H]	---	-0.15±0.08 [Fe/H]	0.0±0.1 [Fe/H]	---
v sin i (km/s)	---	---	---	---	4.30±0.20	---	---	4.4±1.0	---
ρ_✶ (g/cm³)	---	---	2.8222326+0.7838958-0.5995568	2.71+0.14-0.19	---	---	---	2.23±0.33	---
M_✶ (M_⦿)	0.803±0.034	---	0.864000+0.109078-0.101517	0.793+0.024-0.040	0.84±0.01	---	0.802828 +0.028165-0.029804	0.84±0.03	---
R_✶ (R_⦿)	0.7595+0.0087-0.0089	0.81±0.03	0.7557220+0.0530502-0.0391508	0.744+0.010-0.009	0.75±0.01	0.75308275+0.02096340-0.06386190	0.765322 +0.033417-0.026030	0.81±0.03	0.755721986293793±0.046100500000000
log g (log₁₀(cm/s²))	---	4.6±0.1	4.6178600+0.0878848-0.0822538	4.62±0.10	4.61±0.01	---	4.5±0.1	4.62±0.10	4.6178600±0.0850693
P_rot (days)	9.194±0.065	---	---	---	---	---	---	9.37±1.85	---
L_✶ (log₁₀(L_⦿))	---	---	-0.4484503+0.0197315-0.0130396	---	---	-0.47905652+0.00426347-0.00430572	---	---	---
γ (km/s)	---	---	---	---	---	-5.272756713213875±1.130114353353466	---	---	---
Age (Gyr)	5.30+4.90-3.70	---	---	---	---	---	---	---	---

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K2-131 b Planetary Parameters (7 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Bonomo et al. 2023	Adams et al. 2021	Dai et al. 2019	Livingston et al. 2018	Mayo et al. 2018	Dai et al. 2017	ExoFOP
a/R_✶	---	3.0±0.2	---	2.6+0.2-0.4	2.298600 +0.371556-0.622215	2.66+0.18-0.36	---
M_p (M_⨁)	7.9±1.3	---	6.3±1.4	---	---	6.5±1.6	---
M_p (M_Jup)	0.025±0.004	---	0.020±0.004	---	---	0.020±0.005	---
e	0	---	---	---	---	0	---
i (deg)	85.0+9.0-10.0	89.7+7.0-6.0	---	---	76.935339 +9.320737-17.005494	85+9-10	---
P (days)	0.3693038±0.0000091	0.369311±0.000030	0.369	0.36931±0.00001	0.369311 +0.000008-0.000009	0.3693038±0.0000091	0.369305719843571±0.000007676090000
ρ (g/cm³)	8.80+1.90-1.70	---	7.70+2.70-2.60	---	---	6.0+3.0-2.7	---
R_p (R_⨁)	1.690+0.085-0.058	1.50+0.07-0.06	1.651+0.065-0.056	1.70+0.09-0.05	1.7615691398 +0.223225606593-0.127949630608	1.81+0.16-0.12	2.13418185649227±1.68659560000000
R_p (R_Jup)	0.1508+0.0076-0.0052	0.134+0.006-0.005	0.1473+0.0058-0.0050	0.152+0.008-0.004	0.1571566723 +0.0199148547-0.0114149015	0.161+0.014-0.011	0.190399280149735±0.150468240167458
R_p/R_✶	---	0.01720+0.00041-0.00027	0.02032+0.00076-0.00064	0.0207+0.0010-0.0005	0.021102 +0.002510-0.001354	0.0204+0.0010-0.0006	---
K (m/s)	8.0±1.3	---	6.55±1.48	---	---	6.55±1.48	---
T_C (days)	2457582.9360±0.0011 (BJD-TDB)	2457605.09575+0.00091-0.00025 (HJD)	---	2457582.9355+0.0011-0.0010 (BJD)	2457582.93557 +0.000994-0.000977	2457582.9360±0.0011 (BJD)	2459280.98948800±0.00063759 (BJD)
T_eq (K)	2223±37	---	---	2062±23	---	---	2008.02296489722
S (S_⨁)	4070±280	---	---	---	---	---	3842.33921376018
a (au)	0.00936±0.00014	---	---	0.009500±0.000000	---	---	---
δ (%)	---	---	---	0.04	---	---	0.0755653593485102±0.0063054474000000
T₁₄ (hours)	---	---	---	1.0	---	---	1.00277809611943±0.21695538000000
b	---	---	---	0.40+0.27-0.26	---	---	---

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Nearby Data (within 30 arcseconds) Browse Nearby Data

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

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

Bibliography (12 References)

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Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems
Bonomo et al. 2023 Reference Overview
Ultra-short-period Planets in K2. III. Neighbors are Common with 13 New Multiplanet Systems and 10 Newly Validated Planets in Campaigns 0-8 and 10
Adams et al. 2021 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
Homogeneous Analysis of Hot Earths: Masses, Sizes, and Compositions
Dai et al. 2019 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
44 Validated Planets from K2 Campaign 10
Livingston et al. 2018 Reference Overview
275 Candidates and 149 Validated Planets Orbiting Bright Stars in K2 Campaigns 0-10
Mayo et al. 2018 Reference Overview
The Discovery and Mass Measurement of a New Ultra-short-period Planet: K2-131b
Dai et al. 2017 Reference Overview
ExoFOP TOI Table
ExoFOP
The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8
EPIC Catalog Reference Overview
All WISE Data Release
Cutri et al. 2014 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview

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System
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False Positive Planet
Controversial
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K2-131 Overview

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