Key parameters at a glance
- A radius of 11.21 Earth radii
- A mass of 126.50 Earth masses
- Surface gravity around 1.01 g
- An orbital period of 11.168 days
- Semi-major axis 0.1036 AU
- Equilibrium temperature 1,030 K (757 °C)
- Distance from Earth 426.35 light-years
- Earth Similarity Index 0.125
- Travel time at Voyager 1 speed 7,518,702 years
K2-232 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1629of 1771
top 91.9%
This planet
11.21R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | K2-232 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 11.21 | 11.21 |
| Mass (M⊕) | 1.00 | 126.50 | 317.83 |
| Density (g/cm³) | 5.51 | 0.41 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.01 | 2.53 |
| Insolation (S⊕) | 1.00 | 312.16 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 126.496 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 123.000 M⊕ | Lower bound from radial-velocity fitting. |
| Computed mass | 123.003 M⊕ | Model-computed mass (e.g. from mass-radius relation). |
Star Catalogue Identifiers
HD
HD 286123
TIC
TIC 68577662
Gaia DR2
Gaia DR2 3406687485600728192
Gaia DR3
Gaia DR3 3406687485600728192
System
K2-232
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.17 Earth days (3.1% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1036 AU.
Transit Fingerprint
Depth
0.966 %
Duration
5.030 h
Impact parameter b
0.108
Rp / R★
0.088680
Transit midpoint (BJD)
2,457,825.3498
Photometric dip
Transit produces a flux drop of 9,660 ppm lasting ≈ 5.03 h.
Extended Orbital Architecture
Planet / star radius ratio
0.088680
Semi-major axis / stellar radius
19.250
Impact parameter (b)
0.108
RV semi-amplitude (K)
33.420 m/s
Transit mid-time (BJD)
2,457,825.3498
Long. of periastron (ω)
207.00°
Angular separation (arcsec)
0.79200
Eq. Temperature
1,030K
(757 °C)
Insolation (S⊕)
312.16
Earth = 1.00
Earth Similarity (ESI)
0.125
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Brahm et al. 2018Instrument
Kepler CCD Array
Publication
2018-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2018 at K2 (12 shown).
Host System: K2-232
Spectral Class
F-type yellow-white
Effective Temperature
6,154 K — hotter than the Sun (5,778 K)
Estimated Age
1.43 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.161 R☉
Stellar Mass
1.188 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.379 dex
Stellar density
0.782 g/cm³
Rotational v·sin i
4.16 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
7.621 mas
Total Proper Motion
78.609 mas/yr
PM Right Ascension
62.06 mas/yr
PM Declination
-48.24 mas/yr
Galactic Cartesian (pc)
x = 0.265 · y = 0.910 · z = 0.320
Equatorial (J2000)
RA 73.76679° · Dec 18.65432°
Galactic ℓ, b
182.071° · -15.316°
Ecliptic λ, β
74.600° · -3.922°
HTM-20 index
1581351767
Similar Worlds
TOI-4406 b
Gas Giant · F-type yellow-white
Radius 11.21 R⊕ · 854.0 ly
HD 114082 b
Gas Giant · F-type yellow-white
Radius 11.21 R⊕ · 311.1 ly
TIC 172900988 b
Gas Giant · F-type yellow-white
Radius 11.25 R⊕ · 818.5 ly
KOI-351 h
Gas Giant · F-type yellow-white
Radius 11.25 R⊕ · 2,766.6 ly
TOI-2207 b
Gas Giant · F-type yellow-white
Radius 11.15 R⊕ · 1,217.7 ly
KOI-94 d
Gas Giant · F-type yellow-white
Radius 11.27 R⊕ · 1,555.9 ly