K2-268 Overview

K2-268 0.77 R_⦿ 5006.27 K

K2-268 b

0.134 R_Jup

K2-268 d

0.133 R_Jup

K2-268 e

0.119 R_Jup

K2-268 c

0.240 R_Jup

K2-268 f

0.199 R_Jup

Overview Notes 3 Parameters Nearby Data Bibliography 12 Legend Expand All

K2-268 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-268
K2-268 b	2.15 d	1.5 R_⨁	Transit	2018	Livingston et al. 2018	Confirmed Planet
K2-268 d	4.53 d	1.49 R_⨁	Transit	2021	de Leon et al. 2021	Confirmed Planet
K2-268 e	6.13 d	1.33 R_⨁	Transit	2021	de Leon et al. 2021	Confirmed Planet
K2-268 c	9.33 d	2.69 R_⨁	Transit	2018	Livingston et al. 2018	Confirmed Planet
K2-268 f	26.27 d	2.23 R_⨁	Transit	2021	de Leon et al. 2021	Confirmed Planet

Exoplanet Archive Notes (3)

K2-268

Multiple stellar densities are derived in ref. (Livingston et al. 2018)

K2-268 b

Candidate identifier changed to match previous publication. (Kruse et al. 2019)

K2-268 d

Candidate identifier changed to match previous publication. (Kruse et al. 2019)

K2-268 Stellar Parameters (10 Solutions)

RA: 08h54m50.28s

Dec: +11d50m53.78s

Distance: 327.783+3.236-3.175
pc

Parallax: 3.0221400±0.0296087 mas

Ecliptic Latitude: -5.33795 deg

Ecliptic Longitude: 132.7793 deg

Galactic Latitude: 32.70262 deg

Galactic Longitude: 216.0731 deg

Total Proper Motion: 8.1952795±0.0497078 mas/yr

Proper Motion (RA): -8.1943800±0.0497106 mas/yr

Proper Motion (Dec): 0.1214180±0.0344947 mas/yr

Photometry: m_V
13.848±0.114; m_TESS
12.986±0.006; m_J
12.158±0.021; m_H
11.720±0.028; m_Ks
11.639±0.023; m_Kep
13.539; m_W1
11.584±0.023; m_W2
11.651±0.022; m_W3
11.810±0.281; m_W4
8.817; m_Gaia
13.562700±0.000175; m_B
14.775±0.138; m_g
15.4095000±0.0074005; m_i
15.0370000±0.0121596; m_r
13.6166000±0.0019052; m_u
16.3424000±0.0068975; m_z
13.7656000±0.0058749

Abundances (Hypatia Catalog): [Fe/H] 0.09±0.04 dex; [Mg/H] 0.11±0.07 dex

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

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

Source	de Leon et al. 2021	TICv8	Livingston et al. 2018	Gaia DR2	Kruse et al. 2019	Kruse et al. 2019	Petigura et al. 2018	Nardiello et al. 2016	Pope et al. 2016	Barros et al. 2016
T_eff (K)	5106+70-61	5035.990+120.990-124.995	5068±51	5006.267+118.563-80.457	---	---	---	---	---	---
L_✶ (log₁₀(L_⦿))	---	-0.4294238+0.0172003-0.0166248	---	-0.47140171+0.01023574-0.01048281	---	---	---	---	---	---
R_✶ (R_⦿)	0.78±0.02	0.8012550+0.0630643-0.0389206	0.78±0.01	0.7725450+0.0254432-0.0353322	0.773 +0.035-0.025	0.773 +0.035-0.025	0.78	0.713	---	---
Metallicity (dex)	0.03±0.05 [Fe/H]	0.08480390±0.03746750 [M/H]	0.03±0.06 [Fe/H]	---	---	---	---	---	---	---
M_✶ (M_⦿)	0.84±0.02	0.8390000+0.1190600-0.0859555	0.84±0.02	---	---	---	---	---	---	---
log g (log₁₀(cm/s²))	4.58+0.02-0.03	4.5542900+0.0964259-0.0777817	4.59±0.01	---	---	---	---	---	---	---
ρ_✶ (g/cm³)	---	2.2993985+0.7002974-0.4595949	---	---	---	---	---	---	---	---
P_rot (days)	24.87±2.64	---	---	---	---	---	---	---	---	---

K2-268 b Planetary Parameters (3 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	de Leon et al. 2021	Livingston et al. 2018	Kruse et al. 2019
a/R_✶	7.76+0.72-1.84	7.960+1.720-2.090	6.0 +2.6-1.2
T_eq (K)	1136+18-19	1121±14	---
b	0.42+0.33-0.30	0.43+0.33-0.30	---
P (days)	2.151676+0.000005-0.000006	2.151894+0.000393-0.000363	2.15228±0.00023
R_p (R_⨁)	1.50+0.12-0.07	1.41±0.14	1.61 +0.17-0.39
R_p (R_Jup)	0.134+0.011-0.006	0.126±0.012	0.144 +0.015-0.035
R_p/R_✶	0.0175+0.0014-0.0006	0.0167+0.0019-0.0015	0.0191 +0.0019-0.0045
a (au)	---	0.0308±0.0002	---
T_C (days)	2457143.654276+0.002437-0.002523 (BJD)	2457143.65197+0.00754-0.00771 (BJD)	2457141.4957 +0.0047-0.0045 (BJD)
δ (%)	---	---	0.0398 +0.0035-0.0038
T₁₄ (hours)	1.97+0.06-0.05	---	2.42400+0.21600-0.28800

K2-268 d Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	de Leon et al. 2021	Kruse et al. 2019
a/R_✶	12.57+1.18-3.32	10.9 +3.6-1.8
P (days)	4.528598+0.000016-0.000015	4.52905 +0.00051-0.00058
R_p (R_⨁)	1.49+0.14-0.07	1.85 +0.16-0.30
R_p (R_Jup)	0.133+0.012-0.006	0.165 +0.014-0.03
R_p/R_✶	0.0173+0.0016-0.0006	0.0220 +0.0016-0.0035
δ (%)	---	0.0531 +0.003-0.0031
T₁₄ (hours)	2.57+0.12-0.10	2.83200+0.19200-0.24000
T_C (days)	2457143.974654+0.003182-0.003300 (BJD)	2457143.9728 +0.0049-0.0043 (BJD)
T_eq (K)	888+16-15	---
b	0.40+0.35-0.28	---

K2-268 e Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	de Leon et al. 2021	Kruse et al. 2019
a/R_✶	16.93+1.89-4.06	17.1 +5.6-2.4
P (days)	6.131243+0.000032-0.000033	6.13174 +0.00059-0.00062
R_p (R_⨁)	1.33+0.11-0.08	1.72 +0.12-0.21
R_p (R_Jup)	0.119+0.010-0.007	0.153 +0.011-0.019
R_p/R_✶	0.0155+0.0013-0.0008	0.0204 +0.0011-0.0024
δ (%)	---	0.0436 +0.0026-0.0027
T₁₄ (hours)	2.54+0.14-0.13	2.44800+0.12000-0.14400
T_C (days)	2457142.343959+0.004850-0.004706 (BJD)	2457142.3404 +0.0037-0.0036 (BJD)
T_eq (K)	801±13	---
b	0.42+0.32-0.28	---

K2-268 c Planetary Parameters (7 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	de Leon et al. 2021	Livingston et al. 2018	Kruse et al. 2019	Petigura et al. 2018	Nardiello et al. 2016	Barros et al. 2016	Pope et al. 2016
P (days)	9.327527+0.000021-0.000020	9.326841+0.001532-0.001617	9.32705±0.00061	9.326100 +0.001564-0.001524	9.325429±0.001094	9.33155684	9.325
δ (%)	---	---	0.1239 +0.0048-0.005	---	0.081±0.007	0.134±1426.191	0.0923
T₁₄ (hours)	3.35+0.62-0.11	---	4.08000+0.43200-0.38400	2.81040+0.36000-0.30960	---	3.95000+0.47400-0.47400	2.87688
T_C (days)	2457140.846650+0.002133-0.002101 (BJD)	2457150.17220+0.00465-0.00453 (BJD)	2457140.8461±0.0027 (BJD)	2457150.17132 +0.004026-0.003997 (BJD)	2457150.18089±0.002211 (BJD)	2457150.189546 (BJD)	2457140.855 (BJD)
b	0.65+0.30-0.45	0.44+0.36-0.30	---	0.81 +0.24-0.53	---	---	0
R_p (R_⨁)	2.69+0.77-0.21	2.69±0.24	3.63 +0.89-1.32	3.1 +4.9-0.5	2.14	---	---
R_p (R_Jup)	0.240+0.069-0.019	0.240±0.021	0.324 +0.079-0.118	0.28 +0.44-0.04	0.191	---	---
R_p/R_✶	0.0312+0.0091-0.0022	0.0318+0.0036-0.0020	0.043 +0.010-0.016	0.0368 +0.0579-0.0063	0.0275±0.0007	---	0.030376
i (deg)	---	---	---	---	88.71±0.12	---	---
a/R_✶	17.17+4.82-9.46	23.41+3.40-7.38	8.4 +2.0-8.9	---	---	---	---
T_eq (K)	696+12-13	688±8	---	---	---	---	---
a (au)	---	0.0819±0.0006	---	---	---	---	---

K2-268 f Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Transit

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

Source	de Leon et al. 2021	Kruse et al. 2019
a/R_✶	41.41+3.15-8.33	36.1 +14.1-6.9
P (days)	26.270570+0.000105-0.000109	26.2678 +0.0060-0.0031
R_p (R_⨁)	2.23+0.15-0.09	2.60 +0.22-0.44
R_p (R_Jup)	0.199+0.013-0.008	0.23 +0.020-0.039
R_p/R_✶	0.0259+0.0017-0.0008	0.0309 +0.0022-0.0052
δ (%)	---	0.1025±0.0059
T₁₄ (hours)	4.62+0.13-0.11	4.84800+0.24000-0.48000
T_C (days)	2457142.191739+0.003964-0.003853 (BJD)	2457142.1943 +0.0043-0.0039 (BJD)
T_eq (K)	492+8-10	---
b	0.39+0.29-0.27	---

Nearby Data (within 30 arcseconds) Browse Nearby Data

Known Objects: 5 Confirmed Planets; 3 K2 Targets; 1 2MASS Point Source Catalog

Data Files: 2 K2 Time Series; 5 Associated Literature Data

Bibliography (12 References)

37 new validated planets in overlapping K2 campaigns
de Leon et al. 2021 Reference Overview
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
Sixty Validated Planets from K2 Campaigns 5-8
Livingston et al. 2018 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
Planet Candidates from K2 Campaigns 5─8 and Follow-up Optical Spectroscopy
Petigura et al. 2018 Reference Overview
A PSF-based approach to Kepler/K2 data - III. Search for exoplanets and variable stars within the open cluster M 67 (NGC 2682)
Nardiello et al. 2016 Reference Overview
New planetary and eclipsing binary candidates from campaigns 1-6 of the K2 mission
Barros et al. 2016 Reference Overview
Transiting exoplanet candidates from K2 Campaigns 5 and 6
Pope 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
All WISE Data Release
Cutri et al. 2014 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview

Legend

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

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Debug Info

https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/11/K2-268.json

K2-268

Catalog Parameters

08h54m50.28s

Dec

dec

+11d50m53.78s

elat

-5.33795

elon

132.7793

glat

32.70262

glon

216.0731

m_V

sy_vmag

13.848±0.114

m_TESS

sy_tmag

12.986±0.006

m_J

sy_jmag

12.158±0.021

m_H

sy_hmag

11.720±0.028

m_Ks

sy_kmag

11.639±0.023

m_Kep

sy_kepmag

13.539

m_W1

sy_w1mag

11.584±0.023

m_W2

sy_w2mag

11.651±0.022

m_W3

sy_w3mag

11.810±0.281

m_W4

sy_w4mag

8.817

sy_icmag

no_data

m_Gaia

sy_gaiamag

13.562700±0.000175

m_B

sy_bmag

14.775±0.138

m_g

sy_gmag

15.4095000±0.0074005

m_i

sy_imag

15.0370000±0.0121596

m_r

sy_rmag

13.6166000±0.0019052

m_u

sy_umag

16.3424000±0.0068975

m_z

sy_zmag

13.7656000±0.0058749

sy_pm

8.1952795±0.0497078

μ_δ

sy_pmdec

0.1214180±0.0344947

μ_α

sy_pmra

-8.1943800±0.0497106

sy_plx

3.0221400±0.0296087

Distance

sy_dist

327.783+3.236-3.175

Set Parameters

R_✶

st_rad

0.7725450+0.0254432-0.0353322

T_eff

st_teff

5006.267+118.563-80.457