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K2-12 Overview

  • Star: K2-12
    • Stellar Radius: 1.12 Solar Radius
    • Stellar Effective Temperature: 5672.00 K
    • Planet: K2-12 b
      • Disposition Confirmed
      • Planet Radius 0.218 Jupiter Radius

K2-12 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-12
K2-12 b 8.28 d 2.44 R⨁ Transit 2015 Montet et al. 2015 Confirmed Planet
RA
11h32m46.06s
Dec
+02d14m40.85s
Distance
326.381+6.282-6.053
pc
Parallax
3.0362000±0.0574438 mas
Ecliptic Latitude
-.64074 deg
Ecliptic Longitude
172.85774 deg
Galactic Latitude
58.79109 deg
Galactic Longitude
262.46302 deg
Total Proper Motion
59.3715961±0.0694654 mas/yr
Proper Motion (RA)
-35.1205000±0.0873071 mas/yr
Proper Motion (Dec)
-47.8700000±0.0576184 mas/yr
Photometry
mV 12.380±0.103
mTESS 11.6370±0.0076
mJ 10.983±0.023
mH 10.712±0.023
mKs 10.605±0.024
mKep 12.137
mW1 10.582±0.024
mW2 10.631±0.021
mW3 10.589±0.095
mW4 8.982
mGaia 12.088400±0.000331
mB 12.960±0.097
mg 12.6364000±0.0009881
mi 11.9888000±0.0009523
mr 12.1463000±0.0010256
mu 15.2050000±0.0069923
mz 13.3195000±0.0085636
Abundances
(Hypatia Catalog)
[Fe/H] -0.03±0.05 dex
[C/H] -0.03±0.09 dex
[O/H] 0.02±0.09 dex
[Na/H] -0.19±0.04 dex
[Mg/H] 0.05±0.10 dex
[Al/H] -0.07±0.06 dex
[Si/H] -0.08±0.05 dex
[Ca/H] -0.01±0.06 dex
[Y/H] -0.06±0.08 dex
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 Bonomo et al. 2023 TICv8 Gaia DR2 Mayo et al. 2018 Crossfield et al. 2016 Montet et al. 2015 Luo et al. 2018 Kruse et al. 2019 Vanderburg et al. 2016
Teff
(K)
5672±63
5680.000+111.816-107.266
5779.000+538.233-179.000
 5663.0±50.0 6177±308
5800+53-90
 --- --- 5615
Metallicity
(dex)
0.0±0.1 [Fe/H] -0.060±0.100 [M/H] --- -0.11±0.08 [Fe/H] ---
0.030+0.130-0.170
[Fe/H] 		--- --- ---
Age
(Gyr)
8.90+3.00-3.30
 --- --- --- --- --- --- --- ---
M✶
(M⦿)
0.9650+0.0640-0.0480
1.010000+0.137677-0.105235
 ---
0.935733 +0.032131-0.032848
1.18±0.18
1.01+0.05-0.06
 --- --- ---
R✶
(R⦿)
1.117±0.014
1.1894000+0.0676196-0.0497874
1.0835568+0.0703773-0.1767740
1.005112 +0.121177-0.090058
1.31±0.34
1.01+0.27-0.09
 ---
1.084 +0.177-0.070
0.92
log g
(log10(cm/s2))
---
4.2917300+0.0665245-0.0831855
 --- 4.3±0.1 4.28±0.18 --- --- --- ---
L✶
(log10(L⦿))
---
0.12274556+0.01924425-0.02308277
0.071808834+0.010780845-0.011055256
 --- --- --- --- --- ---
γ
(km/s)
--- --- 18.853138505656819±1.171906878535243 --- --- --- --- --- ---
Sp. T
--- --- --- --- --- --- F9 --- ---
ρ✶
(g/cm3)
---
0.84625390+0.17588290-0.18260490
 --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Bonomo et al. 2023 Mayo et al. 2018 Crossfield et al. 2016 Montet et al. 2015 Kruse et al. 2019 Vanderburg et al. 2016
b
--- --- --- --- --- 0.19
P
(days)
8.28246±0.00052
8.282455 +0.000522-0.000514
8.28176±0.00069 8.28212±0.00060
8.28192 +0.00037-0.00036
8.2824161
Rp
(R⨁)
2.44+0.30-0.14
2.18823473283 +0.368759049774-0.221530157642
2.72±0.73 2.33±0.58
2.48 +0.42-0.41
2.14
Rp
(RJup)
0.218+0.027-0.012
0.1952212269 +0.0328984789-0.0197635969
0.243±0.065 0.208±0.052
0.221 +0.037-0.037
 0.191
Rp/R✶
---
0.019959 +0.002350-0.000941
0.0187±0.0012 ---
0.0210 +0.0011-0.0032
0.01927
δ
(%)
--- --- --- 0.042
0.0481 +0.0014-0.0015
0.0453
T14
(hours)
--- --- 4.18±0.12 ---
4.12800+0.12000-0.19200
 4.16000
TC
(days)
2456815.3701±0.0029
(BJD-TDB)
2456815.37005 +0.002821-0.002909
2456815.3743±0.0038
(BJD-TDB)
2456815.3734±0.0054
(BJD)
2456815.3732±0.0020
(BJD)
2456815.371
(BJD)
a/R✶
---
13.044912 +2.274902-6.307953
--- 17.47±5.05
13.7 +5.3-1.9
---
Teq
(K)
1026±15 --- --- 1003±121 --- ---
a
(au)
0.0792+0.0016-0.0013
 --- 0.0847±0.0043 0.0802±0.0021 --- ---
S
(S⨁)
185±12 --- 310±178 --- --- ---
Mp
(M⨁)
<5.2 --- --- --- --- ---
Mp
(MJup)
<0.016 --- --- --- --- ---
e
<0.50 --- --- --- --- ---
i
(deg)
87.6+1.8-5.4
87.607774 +1.761391-5.368712
--- --- --- ---
ρ
(g/cm3)
<1.6 --- --- --- --- ---
K
(m/s)
<2.1 --- --- --- --- ---
Print
Known Objects
1 Confirmed Planets
1 K2 Targets
1 2MASS Point Source Catalog
Data Files
1 K2 Time Series
1 Associated Literature Data
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  • Candidate
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  • Controversial
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  • Aliases
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