K2-157 Overview
K2-157
0.86
R⦿
5334.00
K
K2-157 b
0.083
RJup
K2-157 c
K2-157 d
- Other Data
- Bibliography 8
- Nearby Data 5
Discovery Data
| Host | Planet | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|
| K2-157 | K2-157 b | Transit | 2018 | Mayo et al. 2018 | Confirmed Planet |
| K2-157 | K2-157 c | Radial Velocity | 2025 | Castro-González et al. 2025 | Confirmed Planet |
| K2-157 | K2-157 d | Radial Velocity | 2025 | Castro-González et al. 2025 | Confirmed Planet |
- RA
- 12h15m00.36s
- Dec
- -05d46m55.26s
- Distance
-
298.373+4.590-4.455pc
- Parallax
- 3.3235700±0.0504068 mas
- Ecliptic Latitude
- -3.81511 deg
- Ecliptic Longitude
- 185.73645 deg
- Galactic Latitude
- 55.93047 deg
- Galactic Longitude
- 286.60409 deg
- Total Proper Motion
- 37.5106484±0.1032317 mas/yr
- Proper Motion (RA)
- 36.722200±0.104773 mas/yr
- Proper Motion (Dec)
- -7.6504100±0.0571847 mas/yr
- Photometry
-
mV12.942±0.069
-
mTESS12.1305±0.0064
-
mJ11.398±0.022
-
mH11.023±0.022
-
mKs10.980±0.023
-
mKep12.604
-
mW110.919±0.023
-
mW210.962±0.022
-
mW311.105±0.137
-
mW49.057
-
mGaia12.641900±0.000177
-
mB13.609±0.013
-
Mission
- K2 : Observed in Campaign 10
| Source | Castro-González et al. 2025 | Adams et al. 2021 | TICv8 | Gaia DR2 | Mayo et al. 2018 |
|---|---|---|---|---|---|
|
Teff
(K)
|
5334±64 | 5456±50 |
5377.000+127.453-120.171
|
5337.000+147.200-159.017
|
5456.0±50.0 |
|
Metallicity
(dex)
|
0.02±0.04 [Fe/H] | 0.13±0.08 [Fe/H] | --- | --- | 0.13±0.08 [Fe/H] |
|
γ
(km/s)
|
43.44811+0.00064-0.00066
|
--- | --- | 43.89861504848445±1.20077460382114 | --- |
|
v sin i
(km/s)
|
<3 | --- | --- | --- | --- |
|
Age
(Gyr)
|
8.80±4.00 | --- | --- | --- | --- |
|
M✶
(M⦿)
|
0.890±0.029 | --- |
0.9300000+0.1217200-0.1008120
|
--- |
0.939509 +0.023094-0.026774
|
|
R✶
(R⦿)
|
0.860±0.019 | 0.88±0.04 |
0.9208260+0.0427839-0.0585226
|
0.91824186+0.05726470-0.04863120
|
0.875749 +0.045176-0.025384
|
|
CAII LOG RHK
|
-5.077±0.049 | --- | --- | --- | --- |
|
log g
(log10(cm/s2))
|
4.45±0.04 | 4.5±0.1 |
4.4782000+0.0922341-0.0685236
|
--- | 4.55±0.1 |
|
Sp. T
|
G9 V | --- | --- | --- | --- |
|
L✶
(log10(L⦿))
|
--- | --- |
-0.1947899+0.0172158-0.0167698
|
-0.2102023+0.0090248-0.0092163
|
--- |
|
ρ✶
(g/cm3)
|
--- | --- |
1.6792582+0.4070535-0.3635575
|
--- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity, Transit
| Source | Castro-González et al. 2025 | Adams et al. 2021 | Mayo et al. 2018 |
|---|---|---|---|
|
a/R✶
|
2.405±0.059 | 2.2±0.4 |
1.876041 +0.317378-0.379152
|
|
i
(deg)
|
89.2+9.3-9.1
|
89.70±20.00 |
76.710646 +9.693245-18.254981
|
|
P
(days)
|
0.3652575+0.0000078-0.0000088
|
0.365261±0.000170 | 0.365257±0.000029 |
|
Rp
(R⨁)
|
0.9350±0.0900 |
1.00+0.10-0.08
|
1.05548087755 +0.147183227329-0.097907390109
|
|
Rp
(RJup)
|
0.0834±0.0081 |
0.0892+0.0089-0.0071
|
0.0941636968 +0.0131308080-0.0087347123
|
|
Rp/R✶
|
0.00996±0.00094 |
0.01070+0.00110-0.00063
|
0.011049 +0.001432-0.000974
|
|
TC
(days)
|
2457582.8220+0.0041-0.0032
|
2457638.7224+0.0021-0.0019
|
2457582.82389 +0.003237-0.003292
|
|
Teq
(K)
|
2432±42 | --- | --- |
|
b
|
0.030±0.380 | --- | --- |
|
S
(S⨁)
|
6660±200 | --- | --- |
|
Mp
(M⨁)
|
1.14+0.41-0.42
|
--- | --- |
|
Mp
(MJup)
|
0.0036±0.0013 | --- | --- |
|
ρ
(g/cm3)
|
7.70±3.60 | --- | --- |
|
K
(m/s)
|
1.10+0.39-0.41
|
--- | --- |
|
a
(au)
|
0.00962±0.00010 | --- | --- |
|
δ
(%)
|
0.00990±0.00190 | --- | --- |
|
T14
(hours)
|
1.161±0.032 | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
- K2 Names
| Source | Castro-González et al. 2025 |
|---|---|
|
a/R✶
|
41.2±1.0 |
|
Teq
(K)
|
587±10 |
|
S
(S⨁)
|
22.65±0.68 |
|
Mp sin i
(M⨁)
|
30.8±1.9 |
|
Mp sin i
(MJup)
|
0.09670±0.00600 |
|
e
|
<0.2 |
|
P
(days)
|
25.942+0.045-0.044
|
|
K
(m/s)
|
7.17±0.42 |
|
a
(au)
|
0.1650±0.0018 |
|
TC
(days)
|
2458557.02±0.30 |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
- K2 Names
| Source | Castro-González et al. 2025 |
|---|---|
|
a/R✶
|
77.3±2.0 |
|
Teq
(K)
|
429.1±7.5 |
|
S
(S⨁)
|
6.46±0.21 |
|
Mp sin i
(M⨁)
|
23.3±2.5 |
|
Mp sin i
(MJup)
|
0.0732±0.0077 |
|
e
|
<0.5 |
|
P
(days)
|
66.50+0.71-0.59
|
|
K
(m/s)
|
3.96+0.42-0.41
|
|
a
(au)
|
0.3090±0.0038 |
|
TC
(days)
|
2458589.3+1.7-2.0
|
- Known Objects
- 3 Confirmed Planets
- 1 K2 Targets
- 2 2MASS Point Source Catalog
- Data Files
- 1 K2 Time Series
- 3 Associated Literature Data
-
Two neighbours to the ultra-short-period Earth-sized planet K2-157 b in the warm Neptunian savanna
Castro-González et al. 2025 | Reference Overview -
Ultra-short-period Planets in K2. III. Neighbors are Common with 13 New Multiplanet Systems and 10 Newly Validated Planets in Campaigns 0-8 and 10
Adams et al. 2021 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | 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 -
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
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
- External Link
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