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K2-3 Overview

K2-3 0.52 R⦿ 3951.00 K
K2-3 b
0.185 RJup
K2-3 c
0.141 RJup
K2-3 d
0.130 RJup
Architecture
K2-3
K2-3
K2-3 b
K2-3 c
K2-3 d
Discovery Data
Host Planet Orbital Separation Planet Size Method Year Reference Disposition
K2-3 K2-3 b 10.05 d 2.08 R⨁ Transit 2015 Crossfield et al. 2015 Confirmed Planet
K2-3 K2-3 c 24.65 d 1.58 R⨁ Transit 2015 Crossfield et al. 2015 Confirmed Planet
K2-3 K2-3 d 44.56 d 1.46 R⨁ Transit 2015 Crossfield et al. 2015 Confirmed Planet
K2-3 c K2-3 d
RA
11h29m20.49s
Dec
-01d27m18.49s
Distance
44.07270±0.10815 pc
Parallax
22.6610000±0.0552838 mas
Ecliptic Latitude
-4.37792 deg
Ecliptic Longitude
173.53343 deg
Galactic Latitude
55.25008 deg
Galactic Longitude
264.98752 deg
Total Proper Motion
122.2623054±0.0811597 mas/yr
Proper Motion (RA)
94.0337000±0.0943642 mas/yr
Proper Motion (Dec)
-78.1392000±0.0568367 mas/yr
Photometry
mV
12.168±0.009
mTESS
10.5459000±0.0072768
mJ
9.421±0.027
mH
8.805±0.044
mKs
8.561±0.023
mKep
11.574
mW1
8.443±0.022
mW2
8.424±0.019
mW3
8.322±0.021
mW4
8.251±0.298
mGaia
11.478500±0.000959
mB
13.527±0.040
mg
13.0210000±0.0010063
mi
10.970200±0.000694
mr
11.6746000±0.0007905
mu
15.7198000±0.0060234
mz
12.8219000±0.0104595
Mission
K2 : Observed in Campaign 1
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 Howard et al. 2025 Bonomo et al. 2023 Diamond-Lowe et al. 2022 TICv8 Kosiarek et al. 2019 Gaia DR2 Damasso et al. 2018 Crossfield et al. 2016 Sinukoff et al. 2016 Dai et al. 2016 Beichman et al. 2016 Almenara et al. 2015 Montet et al. 2015 Crossfield et al. 2015 Kruse et al. 2019 Kruse et al. 2019 Kruse et al. 2019 ExoFOP-TESS TOI Barros et al. 2016 Vanderburg et al. 2016 Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
3896.0±189.0 3835±70
3844+61-63
 3920.0±157.0 3896±189
4126.69+153.40-103.00
 3835±70 3841±82 3896±189 3896±189 --- ---
3951+33-38
 3896±189 --- --- --- 3920±157 --- 3927
Metallicity
(dex)
-0.32±0.13 [Fe/H] -0.01±0.09 [Fe/H]
-0.157+0.075-0.080
[Fe/H] 		--- -0.32±0.13 [Fe/H] --- -0.01±0.09 [Fe/H] --- -0.32±0.13 [Fe/H] -0.32±0.13 [Fe/H] --- ---
-0.30+0.07-0.06
[Fe/H] 		-0.32±0.13 [Fe/H] --- --- --- --- --- ---
M✶
(M⦿)
0.601±0.089 0.62±0.06
0.549+0.029-0.027
 0.5460240±0.0203319 0.601±0.089 --- 0.62±0.06 0.414±0.058 0.60±0.09 0.601±0.089 --- 0.612±0.086 0.53±0.02 0.601±0.089 --- --- --- --- --- ---
R✶
(R⦿)
0.561±0.068 0.60±0.06
0.546+0.018-0.016
 0.5508560±0.0164328 0.561±0.068 --- 0.60±0.06 0.371±0.050 0.56±0.07 0.561±0.068 0.561±0.068 0.553±0.041 0.52±0.02 0.561±0.068
0.371 +0.057-0.043
0.371 +0.057-0.043
0.371 +0.057-0.043
0.550855994224548±0.016432800000000 --- 0.58
log g
(log10(cm/s2))
4.734±0.062 ---
4.704+0.023-0.026
 4.6932000±0.0097399 4.734±0.062 --- 4.66±0.05 4.906±0.060 4.72±0.13 4.72±0.13 --- 4.734±0.062 --- --- --- --- --- 4.69320000±0.00973992 --- ---
Prot
(days)
---
40.71+0.87-1.36
 --- --- 40±2 ---
40.4+1.1-1.9
 --- --- 40±10 --- --- --- --- --- --- --- --- --- ---
Age
(Gyr)
--- >1 6.90±4.70 --- >1 --- >1 --- --- --- --- --- --- >1 --- --- --- --- --- ---
ρ✶
(g/cm3)
--- ---
4.78+0.37-0.40
 4.6053527±0.2409732 5.05±0.86 --- 4.95±0.86 --- --- --- --- 5.04±0.86 --- --- --- --- --- --- --- ---
Sp. T
--- --- M V --- M0.0±0.5 V --- --- --- M0 V --- M0 V --- --- M0.0 V --- --- --- --- --- ---
L✶
(log10(L⦿))
--- ---
-1.23+0.01-0.01
-1.19008+0.08666-0.10837
 --- --- -1.15±0.09 --- --- --- --- --- --- --- --- --- --- --- --- ---
γ
(km/s)
--- --- --- --- --- 30.76306478373252±0.98012942899704 --- --- --- --- --- 30.48024±0.00063 --- 32.6±1 --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
K2 Names
K2 Planets and Candidates
Transit
Atmospheric Spectroscopy
Source Diamond-Lowe et al. 2022 Howard et al. 2025 Bonomo et al. 2023 Kosiarek et al. 2019 Damasso et al. 2018 Crossfield et al. 2016 Sinukoff et al. 2016 Dai et al. 2016 Beichman et al. 2016 Almenara et al. 2015 Montet et al. 2015 Crossfield et al. 2015 Kruse et al. 2019 ExoFOP-TESS TOI Barros et al. 2016 Vanderburg et al. 2016 Show Candidate Solutions >> << Hide Candidate Solutions
b
0.31+0.13-0.18
 --- ---
0.22+0.05-0.06
 --- ---
0.54+0.23-0.35
 --- ---
0.21+0.21-0.12
 ---
0.37 +0.22-0.23
--- --- --- 0.42
P
(days)
10.0546535+0.0000088-0.0000091
10.054626+0.000009-0.000010
 10.0546260±0.0000000
10.054626+0.000010-0.000011
 10.05454±0.00003 10.05443±0.00026 10.05449±0.00026
10.05403+0.00260-0.00250
 10.054544±0.000029 10.05429±0.00022 10.05448±0.00033
10.05403 +0.00026-0.00025
10.05467±0.00011 10.0546003105448±0.0000545280640 10.05176778 10.054374
Rp
(R⨁)
2.078+0.076-0.067
 2.140±0.264 2.25±0.23 --- 2.29±0.23 1.44±0.20 2.18±0.30
2.14+0.27-0.26
 2.08±0.25
2.078+0.180-0.093
 1.98±0.10
2.14 +0.27-0.26
1.45 +0.23-0.21
2.11286662064184±0.54714215000000 --- 2.4
Rp
(RJup)
0.1854+0.0068-0.0060
 0.1909±0.0236 0.201±0.021 --- 0.204±0.021 0.128±0.018 0.194±0.027
0.191+0.024-0.023
 0.186±0.022
0.1854+0.0161-0.0083
 0.177±0.009 0.19±0.02
0.129 +0.021-0.019
 0.188497658903261±0.048812837192235 --- 0.214
Rp/R✶
0.03490+0.00041-0.00036
 --- --- 0.0344±0.0004 --- 0.0351±0.0015
0.03534+0.00286-0.00153
 --- 0.0350±0.0007 0.03477±0.00064 ---
0.03483 +0.00123-0.00070
0.0358 +0.0012-0.0031
--- --- 0.03496
δ
(%)
--- --- --- --- --- --- --- --- --- --- --- --- 0.1416±0.0016 0.132102003099345±0.010144813500000 0.145±0.004 0.145
T14
(hours)
--- --- --- --- --- 2.520±0.059
2.726+0.252-0.111
 --- --- 2.563±0.039 ---
2.553 +0.047-0.044
2.62080+0.04560-0.06720
 2.64062098610008±0.40308276000000
3.05200+0.11800-0.11800
 2.61000
TC
(days)
2457165.32947±0.00025
(BJD-TDB)
2456813.41843+0.00039-0.00038
(BJD)
2456813.41843±0.00039
(BJD-TDB)
2456813.41843±0.00041
(JD)
2456813.42022±0.00095
(BJD)
2456813.4178±0.0012
(BJD-TDB)
2456813.4173±0.0011
(BJD-TDB)
2456813.4189±0.0011
(BJD)
2456813.42024±0.00094
(BJD)
2456813.41817±0.00082
(BJD)
2456813.4177±0.0015
(BJD)
2456813.4189±0.0011 2456813.41639±0.00043
(BJD)
2459528.17911900±0.00245263
(BJD)
2456823.477669
(BJD)
2456813.418
(BJD)
Teq
(K)
501.3+5.1-5.2
 463.0±39.0 513±29 --- --- --- 463±39 --- --- --- 504±9 --- --- 470.16656600628 --- ---
S
(S⨁)
10.5±1.0 11.0±4.0
11.6+2.8-2.4
 --- --- 5.8±1.7 10.9±3.7 --- --- --- ---
11.0 +4.1-3.1
--- 11.5485636656932 --- ---
Mp
(M⨁)
5.11+0.65-0.64
6.48+0.99-0.93
6.47+1.00-0.99
6.48+0.99-0.93
 6.6±1.1 --- ---
8.10+2.00-1.90
 --- 8.40±2.10 --- --- --- --- --- ---
Mp
(MJup)
0.0161+0.0020-0.0020
0.0204+0.0031-0.0029
0.0204+0.0031-0.0031
0.0204+0.0031-0.0029
 0.021±0.003 --- ---
0.0255+0.0063-0.0060
 --- 0.0264±0.0066 --- --- --- --- --- ---
ρ
(g/cm3)
3.11+0.49-0.46
3.70+1.67-1.08
3.12+1.30-0.90
3.70+1.67-1.08
3.0+1.3-0.9
 --- --- 4.5±2.0 ---
4.32+2.00-0.76
 --- --- --- --- --- ---
a/R✶
29.44+0.74-0.84
 --- ---
30.02+0.25-0.31
 --- ---
25.60+4.40-6.67
 --- ---
30.74+0.53-2.50
 30.72±0.75
29.1545 +1.8052-3.6443
27.3 +6.6-2.9
--- --- ---
e
0.107+0.057-0.059
 --- <0.094 0 --- --- --- 0 --- 0.060±0.060 --- --- --- --- --- ---
i
(deg)
89.40+0.34-0.22
 ---
89.588+0.120-0.100
89.588+0.116-0.100
 --- ---
88.80+0.84-1.12
 --- ---
89.59+0.24-0.40
 ---
89.28 +0.46-0.60
--- --- --- ---
K
(m/s)
2.27±0.28 --- 2.66±0.37
2.72+0.29-0.30
 2.7±0.4 --- ---
3.36+0.75-0.74
 --- 3.60±0.87 --- --- --- --- --- ---
a
(au)
0.0747+0.0013-0.0012
 --- 0.0778±0.0026 ---
0.0777+0.0024-0.0026
 0.0679±0.0032 0.0769±0.0039 --- --- 0.0775±0.0039 0.0740±0.0009
0.0769 +0.0036-0.0040
--- --- --- ---
ω
(deg)
188+32-34
 --- --- 0 --- --- --- --- --- 180±70 --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Atmospheric Spectroscopy
Source Diamond-Lowe et al. 2022 Howard et al. 2025 Bonomo et al. 2023 Kosiarek et al. 2019 Damasso et al. 2018 Crossfield et al. 2016 Sinukoff et al. 2016 Dai et al. 2016 Beichman et al. 2016 Almenara et al. 2015 Montet et al. 2015 Crossfield et al. 2015 Kruse et al. 2019 Vanderburg et al. 2016 Show Candidate Solutions >> << Hide Candidate Solutions
b
0.14+0.13-0.10
 --- ---
0.090+0.080-0.060
 --- ---
0.650+0.200-0.400
 --- ---
0.31+0.14-0.21
 ---
0.45 +0.23-0.28
--- 0.59
P
(days)
24.646729+0.000044-0.000042
 24.646582±0.000039 24.646582±0.000039
24.646582+0.000041-0.000040
 24.64638±0.00017 24.6435±0.0012 24.64354±0.00117 24.6454±0.0013 24.64638±0.00018 24.6491±0.0033 24.64745±0.00152 24.6454±0.0013
24.64671 +0.00054-0.00053
24.645013
Rp
(R⨁)
1.582+0.057-0.051
1.72+0.23-0.22
 1.69±0.17 --- 1.77±0.18 1.18±0.17 1.85±0.27
1.72+0.23-0.22
 1.69±0.21
1.644+0.160-0.065
 1.56±0.10
1.72 +0.23-0.22
1.18 +0.21-0.18
1.9
Rp
(RJup)
0.1411+0.0051-0.0045
0.153+0.021-0.020
 0.151±0.015 --- 0.158±0.016 0.105±0.015 0.165±0.024
0.153+0.021-0.020
 0.151±0.019
0.1467+0.0143-0.0058
 0.139±0.009 0.15±0.02
0.105 +0.019-0.016
 0.170
Rp/R✶
0.02658±0.00032 --- --- 0.0259±0.0006 --- 0.0288±0.0016
0.03007+0.00304-0.00203
 --- 0.0270±0.0006 0.02770±0.00070 ---
0.02786 +0.00143-0.00083
0.0291±0.0027 0.02858
δ
(%)
--- --- --- --- --- --- --- --- --- --- --- ---
0.0822 +0.0015-0.0016
0.0916
T14
(hours)
--- --- --- --- --- 3.38±0.12
3.633+0.491-0.191
 --- --- --- ---
3.428 +0.106-0.097
3.60000+0.12000-0.24000
 3.61000
TC
(days)
2457329.85688+0.00055-0.00056
(BJD-TDB)
2456812.28013+0.00090-0.00095
(BJD)
2456812.28013±0.00095
(BJD-TDB)
2456812.28018+0.00098-0.00100
(JD)
2456812.2777±0.0026
(BJD)
2456812.2811±0.0024
(BJD-TDB)
2456812.2812±0.0022
(BJD-TDB)
2456812.2786+0.0026-0.0027
(BJD)
2456812.2777±0.0026
(BJD)
2456812.2784±0.0018
(BJD)
2456812.2759±0.0030
(BJD)
2456812.2786 +0.0037-0.0043
2456812.27612±0.00099
(BJD)
2456812.280
(BJD)
Teq
(K)
371.8+3.8-3.9
 344.0±29.0 381±21 --- --- --- 344±29 --- --- --- 374±7 --- --- ---
S
(S⨁)
3.17±0.30 3.0±1.0
3.51+0.85-0.73
 --- --- 1.77±0.53 3.3±1.1 --- --- --- ---
3.32 +1.25-0.95
--- ---
Mp
(M⨁)
2.68±0.85
2.14+1.08-1.04
 3.3±1.2
2.14+1.08-1.04
3.1+1.3-1.2
 --- --- <4.2 ---
2.1+2.1-1.3
 --- --- --- ---
Mp
(MJup)
0.00843±0.00267
0.00673+0.00340-0.00327
 0.010±0.004
0.00673+0.00340-0.00327
0.0098+0.0041-0.0038
 --- --- <0.013 ---
0.0066+0.0066-0.0041
 --- --- --- ---
ρ
(g/cm3)
3.7±1.2
2.98+1.96-1.50
3.7+2.1-1.5
2.98+1.96-1.50
3.1+1.9-1.3
 --- --- <4.5 ---
1.82+3.00-0.96
 --- --- --- ---
e
0.0480+0.0730-0.0350
 --- <0.095 0 --- --- --- 0 --- 0.04±0.04 --- --- --- ---
i
(deg)
89.84+0.11-0.14
 ---
89.905+0.066-0.088
89.905+0.066-0.088
 --- ---
89.12+0.62-0.86
 --- --- 89.70±0.20 ---
89.55 +0.29-0.44
--- ---
K
(m/s)
0.880±0.280 --- 1.01±0.35 0.67±0.32 0.950±0.370 --- --- <1.3 ---
0.610+0.660-0.370
 --- --- --- ---
a
(au)
0.1357+0.0023-0.0022
 --- 0.1414±0.0047 ---
0.1413+0.0044-0.0047
 0.1235±0.0058 0.1399±0.0070 --- --- 0.1405±0.0067 0.1345±0.0016
0.1399 +0.0066-0.0073
--- ---
a/R✶
53.5+1.3-1.5
 --- ---
54.57+0.46-0.56
 --- ---
42.2+12.0-14.4
 --- ---
55.90+0.97-4.60
 55.85±1.36
51.8135 +4.0525-9.0784
39±15 ---
ω
(deg)
-180+100-110
 --- --- 0 --- --- --- --- --- 89.0±110.0 --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Atmospheric Spectroscopy
Source Diamond-Lowe et al. 2022 Howard et al. 2025 Bonomo et al. 2023 Kosiarek et al. 2019 Damasso et al. 2018 Fukui et al. 2016 Crossfield et al. 2016 Sinukoff et al. 2016 Dai et al. 2016 Beichman et al. 2016 Almenara et al. 2015 Crossfield et al. 2015 Kruse et al. 2019 Vanderburg et al. 2016 Show Candidate Solutions >> << Hide Candidate Solutions
b
0.24±0.16 --- ---
0.30+0.04-0.05
 ---
0.15+0.19-0.14
 ---
0.670+0.200-0.400
 --- ---
0.359+0.089-0.270
0.37 +0.22-0.23
--- 0.46
P
(days)
44.55603+0.00013-0.00012
44.556456+0.000097-0.000087
 44.556456±0.000097
44.55646+0.00011-0.00010
 44.55764±0.00042 44.55612±0.00021 44.5609±0.0052 44.55983±0.00590
44.5631+0.0063-0.0055
 44.55765±0.00043 44.5705±0.0059
44.5631 +0.0063-0.0055
44.5574±0.0023 44.561150
Rp
(R⨁)
1.458+0.056-0.051
1.52+0.21-0.20
 1.62±0.18 --- 1.65±0.17 --- 0.96±0.14 1.51±0.23
1.52+0.21-0.20
 1.61±0.20 1.53±0.11
1.52 +0.21-0.20
1.11 +0.21-0.23
1.7
Rp
(RJup)
0.1301+0.0050-0.0045
0.136+0.019-0.018
 0.145±0.016 --- 0.147±0.015 --- 0.086±0.012 0.135±0.021
0.136+0.019-0.018
 0.144±0.018 0.136±0.010 0.14±0.02
0.0990 +0.019-0.021
 0.152
Rp/R✶
0.02449+0.00041-0.00040
 --- --- 0.0244±0.0008 ---
0.02484+0.00056-0.00054
 0.0235±0.0015
0.02453+0.00267-0.00182
 --- 0.0252±0.0007 0.02495±0.00074
0.0248 +0.0014-0.0010
0.0273 +0.0029-0.0048
0.02497
δ
(%)
--- --- --- --- --- --- --- --- --- --- --- --- 0.0782±0.002 0.0731
T14
(hours)
--- --- --- --- ---
4.17+0.09-0.07
 4.04±0.19
4.325+0.552-0.256
 --- --- 4.07±0.12
3.98 +0.17-0.15
4.51200+0.16800-0.24000
 4.04000
TC
(days)
2457271.78796±0.00076
(BJD-TDB)
2456826.22347+0.00053-0.00052
(BJD)
2456826.22347±0.00053
(BJD-TDB)
2456826.22346±0.00056
(JD)
2456826.2248±0.0037
(BJD)
2457450.0137±0.0043
(BJD-TDB)
2456826.2285±0.0034
(BJD-TDB)
2456826.2288±0.0034
(BJD-TDB)
2456826.2232+0.0037-0.0043
(BJD)
2456826.2248±0.0038
(BJD)
2456826.2272±0.0027
(BJD)
2456826.2232±0.0011 2456826.2286±0.0016
(BJD)
2456826.227
(BJD)
Teq
(K)
305.2+3.1-3.2
 282.0±24.0 312±17 --- --- --- --- 282±24 --- 300 --- --- --- ---
S
(S⨁)
1.44±0.14 282.0±23.0
1.60+0.38-0.33
 --- --- --- 0.800±0.240 1.5±0.5 --- 1.5±0.5 ---
1.51 +0.57-0.43
--- ---
Mp
(M⨁)
<2.2 <2.8 <1.6 <2.80 <1.8 --- --- --- 7.50±3.00 --- 11.1±3.5 --- --- ---
Mp
(MJup)
<0.0069 <0.0088 <0.0050 <0.00881 <0.0057 --- --- --- 0.0236±0.0094 --- 0.0349±0.0110 --- --- ---
ρ
(g/cm3)
--- <5.62 <2.1 <5.62 <2.4 --- --- --- 11.7±6.7 --- 17.5±6.3 --- --- ---
e
0.0910+0.1200-0.0640
 --- <0.097 0 --- --- --- --- 0 --- 0.045±0.045 --- --- ---
i
(deg)
89.82+0.12-0.11
 ---
89.788+0.033-0.029
89.788+0.033-0.029
 --- --- ---
89.38+0.43-0.64
 --- --- 89.79±0.15
89.68 +0.21-0.26
--- ---
K
(m/s)
--- --- <0.39 <0.71 <0.43 --- --- --- 1.91±0.74 --- 2.84±0.90 --- --- ---
a
(au)
0.2014+0.0034-0.0033
 --- 0.2097±0.0070 ---
0.2097+0.0065-0.0070
 --- 0.1833±0.0086 0.2076±0.0104 --- --- 0.2086±0.0100
0.2076 +0.0098-0.0108
--- ---
a/R✶
79.4+2.0-2.3
 --- ---
80.98+0.68-0.84
 ---
78.7+4.0-5.0
 ---
62.1+19.0-23.0
 --- ---
82.9+1.4-6.9
78.7402 +6.7299-12.9507
61 +21-16
---
ω
(deg)
0.0+140.0-150.0
 --- --- 0 --- --- --- --- --- --- 351±66 --- --- ---
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Known Objects
3 Confirmed Planets
1 K2 Targets
2 2MASS Point Source Catalog
Data Files
1 K2 Time Series
3 Associated Literature Data
System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
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