K2-17 Overview

K2-17 0.63 R_⦿ 4118.41 K

K2-17 b

0.199 R_Jup

Overview Parameters Nearby Data Bibliography 12 Legend Expand All

K2-17 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-17
K2-17 b	17.97 d	2.23 R_⨁	Transit	2015	Montet et al. 2015	Confirmed Planet

K2-17 Stellar Parameters (9 Solutions)

RA: 11h53m19.12s

Dec: +06d24m44.34s

Distance: 125.106+0.663-0.657
pc

Parallax: 7.9646300±0.0418381 mas

Ecliptic Latitude: 5.21796 deg

Ecliptic Longitude: 175.90769 deg

Galactic Latitude: 65.10211 deg

Galactic Longitude: 266.61925 deg

Total Proper Motion: 28.5542158±0.0590529 mas/yr

Proper Motion (RA): -24.0956000±0.0641894 mas/yr

Proper Motion (Dec): 15.3214000±0.0438357 mas/yr

Photometry: m_V
13.411±0.103; m_TESS
12.2066±0.0062; m_J
11.076±0.024; m_H
10.436±0.023; m_Ks
10.308±0.021; m_Kep
12.997; m_W1
10.216±0.022; m_W2
10.264±0.020; m_W3
10.122±0.071; m_W4
8.658; m_Gaia
13.002300±0.000817; m_B
14.811±0.055; m_g
15.0397000±0.0044934; m_i
12.7086000±0.0016656; m_r
13.2550000±0.0028203; m_u
16.7810000±0.0080282; m_z
12.9601000±0.0050656

Mission: K2 : Observed in Campaign 1

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

Source	TICv8	Gaia DR2	Mayo et al. 2018	Dressing et al. 2017	Crossfield et al. 2016	Montet et al. 2015	Luo et al. 2018	Kruse et al. 2019	Vanderburg et al. 2016
T_eff (K)	4035.8500+114.0380-93.7609	4360.00+403.80-228.89	4382.0±50.0	4118.411133+133.237854-119.285591	4102±52	4320+56-47	---	---	4151
M_✶ (M_⦿)	0.6310000+0.0748761-0.0851095	---	0.624878 +0.019918-0.019225	0.657836±0.065784	0.532±0.050	0.71+0.02-0.05	---	---	---
R_✶ (R_⦿)	0.7171010+0.0518593-0.0699799	0.5563883+0.0633630-0.0903260	0.600869 +0.016840-0.015203	0.626014+0.040506-0.035563	0.478±0.043	0.66+0.02-0.03	---	0.556 +0.090-0.063	0.63
Metallicity (dex)	-0.2347520±0.0487593 [M/H]	---	-0.35±0.08 [Fe/H]	---	---	0.15+0.09-0.22 [Fe/H]	---	---	---
log g (log₁₀(cm/s²))	4.5269400+0.1214840-0.0798765	---	4.71±0.1	---	4.798±0.050	---	---	---	---
L_✶ (log₁₀(L_⦿))	-0.9104039+0.0270170-0.0331780	-0.996603385+0.004285544-0.004328242	---	---	---	---	---	---	---
γ (km/s)	---	-10.670887138179161±3.421508050831224	---	---	---	---	---	---	---
Sp. T	---	---	---	---	---	---	K7	---	---
ρ_✶ (g/cm³)	2.4124243+0.7987159-0.6488429	---	---	---	---	---	---	---	---

K2-17 b Planetary Parameters (6 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	Montet et al. 2015	Mayo et al. 2018	Dressing et al. 2017	Crossfield et al. 2016	Kruse et al. 2019	Vanderburg et al. 2016
a/R_✶	39.38±0.85	46.345919 +7.246946-14.002853	40.17+2.61-2.62	---	47.7 +16.8-7.2	---
T_eq (K)	487±10	---	---	---	---	---
P (days)	17.96753±0.00152	17.969079 +0.001383-0.001399	17.969029+0.001376-0.001422	17.9654±0.0017	17.96832 +0.00085-0.00090	17.968216
R_p (R_⨁)	2.23±0.20	1.94750799192 +0.206964025578-0.136038636367	2.03+0.18-0.16	1.53±0.19	1.78 +0.31-0.29	2.15
R_p (R_Jup)	0.199±0.018	0.1737450256 +0.0184640936-0.0121365542	0.181+0.016-0.014	0.136±0.017	0.159 +0.028-0.026	0.192
a (au)	0.1190±0.0020	---	0.117±0.004	0.1088±0.0034	---	---
δ (%)	0.099	---	---	---	0.0915 +0.0037-0.0039	0.0962
T_C (days)	2456817.9462±0.0035 (BJD)	2456817.94377 +0.003297-0.003409	2456817.944±0.003 (BJD)	2456817.9525±0.0037 (BJD-TDB)	2456817.9472 +0.0021-0.0019 (BJD)	2456817.945 (BJD)
R_p/R_✶	---	0.029715 +0.003046-0.001935	0.029808+0.001876-0.001634	0.0290±0.0025	0.0293 +0.0016-0.0034	0.02936
T₁₄ (hours)	---	---	---	2.76±0.15	2.59200+0.12000-0.16800	2.76000
i (deg)	---	89.399414 +0.423618-0.819428	89.08+0.40-0.20	---	---	---
b	---	---	---	---	---	0.61
S (S_⨁)	---	---	10.5+3.7-2.9	4.91±0.97	---	---
ω (deg)	---	---	52.0600000+83.4771780-130.8055190	---	---	---
e	---	---	0.180000+0.201126-0.152247	---	---	---

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)

The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
Detection of Hundreds of New Planet Candidates and Eclipsing Binaries in K2 Campaigns 0-8
Kruse et al. 2019 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
275 Candidates and 149 Validated Planets Orbiting Bright Stars in K2 Campaigns 0-10
Mayo et al. 2018 Reference Overview
Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars. II. Planetary Systems Observed During Campaigns 1-7
Dressing et al. 2017 Reference Overview
197 Candidates and 104 Validated Planets in K2’s First Five Fields
Crossfield et al. 2016 Reference Overview
The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8
EPIC Catalog Reference Overview
Planetary Candidates from the First Year of the K2 Mission
Vanderburg et al. 2016 Reference Overview
Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Planets, Including a Planet Receiving Earth-like Insolation
Montet et al. 2015 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
LAMOST DR4 catalogs
Luo et al. 2018 Reference Overview

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

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