K2-238 Overview
-
Star:
K2-238
- Stellar Radius: 1.59 Solar Radius
- Stellar Effective Temperature: 5342.00 K
-
Planet:
K2-238 b
- Disposition Confirmed
- Planet Radius 1.300 Jupiter Radius
K2-238 Architecture & Discovery Information
| Name | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|
| K2-238 | ||||||
| K2-238 b | 3.2 d | 14.57 R⨁ | Transit | 2018 | Soto et al. 2018 | Confirmed Planet |
- RA
- 23h10m49.04s
- Dec
- -07d51m27.21s
- Distance
- 537.963 pc
- Parallax
- ---
- Ecliptic Latitude
- -2.37937 deg
- Ecliptic Longitude
- 345.62843 deg
- Galactic Latitude
- -59.35657 deg
- Galactic Longitude
- 67.22735 deg
- Total Proper Motion
- 20.9±1.5 mas/yr
- Proper Motion (RA)
- -20.3±1.5 mas/yr
- Proper Motion (Dec)
- -4.9±1.7 mas/yr
- Photometry
- mV 13.973±0.126
- mTESS 13.1749±0.0064
- mJ 12.464±0.032
- mH 12.095±0.038
- mKs 12.032±0.033
- mKep 13.552
- mW1 11.854±0.023
- mW2 11.927±0.023
- mW3 11.771±0.273
- mW4 8.964
- mGaia 13.663500±0.002247
- mB 14.544±0.058
-
Abundances
(Hypatia Catalog) - [Fe/H] 0.43±0.04 dex
- [Mg/H] 0.49±0.07 dex
- Mission
- K2: Observed in Campaign 12
| Source | Gaia DR2 | Soto et al. 2018 | ExoFOP | ||
|---|---|---|---|---|---|
|
Teff
(K)
|
5342.00+318.00-643.32
|
5630±78 | 5342.0±452.3 | ||
|
Metallicity
(dex)
|
--- | 0.34±0.04 [Fe/H] | --- | ||
|
v sin i
(km/s)
|
--- | 3.78±0.57 | --- | ||
|
Age
(Gyr)
|
--- |
5.63+1.05-1.97
|
--- | ||
|
ρ✶
(g/cm3)
|
--- |
0.0775+0.0004-0.0003
|
--- | ||
|
M✶
(M⦿)
|
--- | 1.19±0.08 | --- | ||
|
R✶
(R⦿)
|
--- | 1.59±0.16 | --- | ||
|
log g
(log10(cm/s2))
|
--- | 4.11±0.07 | --- | ||
|
Sp. T
|
--- | G2 V | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity, Transit
| Source | Soto et al. 2018 | Kokori et al. 2023 | ExoFOP | ||
|---|---|---|---|---|---|
|
a/R✶
|
6.27+0.66-0.52
|
6.3+0.7-0.5
|
--- | ||
|
i
(deg)
|
84.5+1.8-1.5
|
84.5+1.8-1.5
|
--- | ||
|
P
(days)
|
3.20466±0.00003 | 3.2046909±0.0000022 | 3.2047072±0.0000023 | ||
|
Rp/R✶
|
0.080+0.003-0.002
|
0.080±0.003 | --- | ||
|
TC
(days)
|
2457740.5036±0.0004
(JD)
|
2457984.06074±0.00023
(BJD-TDB)
|
2460227.3570320±0.0017497
(BJD)
|
||
|
δ
(%)
|
--- | --- | 0.7448000±0.0202614 | ||
|
T14
(hours)
|
--- | --- | 3.331±0.288 | ||
|
Teq
(K)
|
1587+75-76
|
--- | --- | ||
|
ω
(deg)
|
90 | --- | --- | ||
|
Mp
(M⨁)
|
273+41-38
|
--- | --- | ||
|
Mp
(MJup)
|
0.86+0.13-0.12
|
--- | --- | ||
|
e
|
0 | --- | --- | ||
|
ρ
(g/cm3)
|
0.56+0.25-0.16
|
--- | --- | ||
|
Rp
(R⨁)
|
14.6+1.7-1.6
|
--- | --- | ||
|
Rp
(RJup)
|
1.30+0.15-0.14
|
--- | --- | ||
|
K
(m/s)
|
100±10 | --- | --- | ||
|
a
(au)
|
0.046+0.007-0.006
|
--- | --- |
Nearby Data (within 30 arcseconds) Browse Nearby Data
+
- Known Objects
- 1 Confirmed Planets
- 1 K2 Targets
- 1 2MASS Point Source Catalog
- Data Files
- 1 K2 Time Series
- 1 Associated Literature Data
-
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
Kokori et al. 2023 Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview -
Gaia Data Release 2
Gaia DR2 Reference Overview -
K2-237 b and K2-238 b: discovery and characterization of two new transiting hot Jupiters from K2
Soto et al. 2018 Reference Overview -
ExoFOP TOI Table
ExoFOP -
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
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- False Positive Planet
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- Aliases
- Data Access
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