Key parameters at a glance
- A radius of 12.14 Earth radii
- A mass of 410.00 Earth masses
- Surface gravity around 2.78 g
- An orbital period of 5.818 days
- Semi-major axis 0.0642 AU
- Equilibrium temperature 1,098 K (825 °C)
- Distance from Earth 2,073.45 light-years
- Earth Similarity Index 0.153
- Travel time at Voyager 1 speed 36,565,208 years
K2-113 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1445of 1771
top 81.5%
This planet
12.14R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | K2-113 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.14 | 11.21 |
| Mass (M⊕) | 1.00 | 410.00 | 317.83 |
| Density (g/cm³) | 5.51 | 1.97 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.78 | 2.53 |
| Insolation (S⊕) | 1.00 | 277.39 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 410.001 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 376939759
Gaia DR2
Gaia DR2 2564787622577189760
Gaia DR3
Gaia DR3 2564787622577189760
System
K2-113
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.82 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0642 AU.
Transit Fingerprint
Depth
0.838 %
Duration
3.074 h
Impact parameter b
0.720
Rp / R★
0.089800
Transit midpoint (BJD)
2,457,398.7043
Photometric dip
Transit produces a flux drop of 8,378 ppm lasting ≈ 3.07 h.
Extended Orbital Architecture
Planet / star radius ratio
0.089800
Semi-major axis / stellar radius
12.080
Impact parameter (b)
0.720
RV semi-amplitude (K)
144.500 m/s
Transit mid-time (BJD)
2,457,398.7043
Angular separation (arcsec)
0.10100
Eq. Temperature
1,098K
(825 °C)
Insolation (S⊕)
277.39
Earth = 1.00
Earth Similarity (ESI)
0.153
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
Espinoza et al. 2017Instrument
Kepler CCD Array
Publication
2017-11
Observation locale
Space
Discovery cohort
Planets confirmed in 2017 at K2 (12 shown).
Host System: K2-113
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,660 K — cooler than the Sun (5,778 K)
Estimated Age
5.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.240 R☉
Stellar Mass
1.040 M☉
Metallicity [Fe/H]
0.27
Extended Stellar Properties
Surface gravity (log g)
4.270 dex
Stellar density
0.987 g/cm³
Rotational v·sin i
2.06 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
1.544 mas
Total Proper Motion
23.919 mas/yr
PM Right Ascension
20.27 mas/yr
PM Declination
-12.70 mas/yr
Galactic Cartesian (pc)
x = 0.936 · y = 0.331 · z = 0.120
Equatorial (J2000)
RA 19.44938° · Dec 6.86885°
Galactic ℓ, b
134.510° · -55.409°
Ecliptic λ, β
20.542° · -1.247°
HTM-20 index
-912298236
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