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K2-268 Overview

  • Star: K2-268
    • Stellar Radius: 0.77 Solar Radius
    • Stellar Effective Temperature: 5006.27 K
    • Planet: K2-268 b
      • Disposition Confirmed
      • Planet Radius 0.134 Jupiter Radius
    • Planet: K2-268 d
      • Disposition Confirmed
      • Planet Radius 0.133 Jupiter Radius
    • Planet: K2-268 e
      • Disposition Confirmed
      • Planet Radius 0.119 Jupiter Radius
    • Planet: K2-268 c
      • Disposition Confirmed
      • Planet Radius 0.240 Jupiter Radius
    • Planet: K2-268 f
      • Disposition Confirmed
      • Planet Radius 0.199 Jupiter Radius

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
K2-268 K2-268 b K2-268 d
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
mV 13.848±0.114
mTESS 12.986±0.006
mJ 12.158±0.021
mH 11.720±0.028
mKs 11.639±0.023
mKep 13.539
mW1 11.584±0.023
mW2 11.651±0.022
mW3 11.810±0.281
mW4 8.817
mGaia 13.562700±0.000175
mB 14.775±0.138
mg 15.4095000±0.0074005
mi 15.0370000±0.0121596
mr 13.6166000±0.0019052
mu 16.3424000±0.0068975
mz 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
Teff
(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
 --- --- --- --- --- --- --- ---
Prot
(days)
24.87±2.64 --- --- --- --- --- --- --- --- ---
Print
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
Teq
(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
Rp
(R⨁)
1.50+0.12-0.07
 1.41±0.14
1.61 +0.17-0.39
Rp
(RJup)
0.134+0.011-0.006
 0.126±0.012
0.144 +0.015-0.035
Rp/R✶
0.0175+0.0014-0.0006
0.0167+0.0019-0.0015
0.0191 +0.0019-0.0045
T14
(hours)
1.97+0.06-0.05
 ---
2.42400+0.21600-0.28800
TC
(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
a
(au)
--- 0.0308±0.0002 ---
Print
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
Teq
(K)
888+16-15
 ---
b
0.40+0.35-0.28
 ---
P
(days)
4.528598+0.000016-0.000015
4.52905 +0.00051-0.00058
Rp
(R⨁)
1.49+0.14-0.07
1.85 +0.16-0.30
Rp
(RJup)
0.133+0.012-0.006
0.165 +0.014-0.03
Rp/R✶
0.0173+0.0016-0.0006
0.0220 +0.0016-0.0035
T14
(hours)
2.57+0.12-0.10
2.83200+0.19200-0.24000
TC
(days)
2457143.974654+0.003182-0.003300
(BJD)
2457143.9728 +0.0049-0.0043
(BJD)
δ
(%)
---
0.0531 +0.003-0.0031
Print
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
Teq
(K)
801±13 ---
b
0.42+0.32-0.28
 ---
P
(days)
6.131243+0.000032-0.000033
6.13174 +0.00059-0.00062
Rp
(R⨁)
1.33+0.11-0.08
1.72 +0.12-0.21
Rp
(RJup)
0.119+0.010-0.007
0.153 +0.011-0.019
Rp/R✶
0.0155+0.0013-0.0008
0.0204 +0.0011-0.0024
T14
(hours)
2.54+0.14-0.13
2.44800+0.12000-0.14400
TC
(days)
2457142.343959+0.004850-0.004706
(BJD)
2457142.3404 +0.0037-0.0036
(BJD)
δ
(%)
---
0.0436 +0.0026-0.0027
Print
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
b
0.65+0.30-0.45
0.44+0.36-0.30
 ---
0.81 +0.24-0.53
--- --- 0
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
Rp
(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 --- ---
Rp
(RJup)
0.240+0.069-0.019
 0.240±0.021
0.324 +0.079-0.118
0.28 +0.44-0.04
0.191 --- ---
Rp/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
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
TC
(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)
δ
(%)
--- ---
0.1239 +0.0048-0.005
--- 0.081±0.007 0.134±1426.191 0.0923
a/R✶
17.17+4.82-9.46
23.41+3.40-7.38
8.4 +2.0-8.9
--- --- --- ---
i
(deg)
--- --- --- --- 88.71±0.12 --- ---
Teq
(K)
696+12-13
 688±8 --- --- --- --- ---
a
(au)
--- 0.0819±0.0006 --- --- --- --- ---
Print
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
Teq
(K)
492+8-10
 ---
b
0.39+0.29-0.27
 ---
P
(days)
26.270570+0.000105-0.000109
26.2678 +0.0060-0.0031
Rp
(R⨁)
2.23+0.15-0.09
2.60 +0.22-0.44
Rp
(RJup)
0.199+0.013-0.008
0.23 +0.020-0.039
Rp/R✶
0.0259+0.0017-0.0008
0.0309 +0.0022-0.0052
T14
(hours)
4.62+0.13-0.11
4.84800+0.24000-0.48000
TC
(days)
2457142.191739+0.003964-0.003853
(BJD)
2457142.1943 +0.0043-0.0039
(BJD)
δ
(%)
--- 0.1025±0.0059
Print
Known Objects
5 Confirmed Planets
3 K2 Targets
1 2MASS Point Source Catalog
Data Files
2 K2 Time Series
5 Associated Literature Data
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  • False Positive Planet
  • Controversial
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