Key parameters at a glance
- A radius of 2.36 Earth radii
- A mass of 6.17 Earth masses
- Surface gravity around 1.11 g
- An orbital period of 8.409 days
- Semi-major axis 0.0760 AU
- Equilibrium temperature 809 K (536 °C)
- Distance from Earth 1,673.85 light-years
- Earth Similarity Index 0.320
- Travel time at Voyager 1 speed 29,518,381 years
1 sibling around Kepler-112
Kepler-112 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-112 b this | Sub-Neptune | 2.36 | 6.17 | 8.409 | 809 | 2014 |
| Kepler-112 c | Sub-Neptune | 2.40 | 6.35 | 28.574 | 538 | 2014 |
Kepler-112 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1395of 1978
top 70.5%
This planet
2.36R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-112 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.36 | 11.21 |
| Mass (M⊕) | 1.00 | 6.17 | 317.83 |
| Density (g/cm³) | 5.51 | 2.58 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.11 | 2.53 |
| Insolation (S⊕) | 1.00 | 123.82 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 272943597
Gaia DR2
Gaia DR2 2078722600285671936
Gaia DR3
Gaia DR3 2078722600285671936
System
Kepler-112
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.41 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0760 AU.
Transit Fingerprint
Depth
0.080 %
Duration
3.485 h
Impact parameter b
0.040
Rp / R★
0.026028
Transit midpoint (BJD)
2,454,967.0062
Photometric dip
Transit produces a flux drop of 799 ppm lasting ≈ 3.49 h.
Extended Orbital Architecture
Planet / star radius ratio
0.026028
Semi-major axis / stellar radius
18.850
Impact parameter (b)
0.040
Transit mid-time (BJD)
2,454,967.0062
Angular separation (arcsec)
0.14800
Eq. Temperature
809K
(536 °C)
Insolation (S⊕)
123.82
Earth = 1.00
Earth Similarity (ESI)
0.320
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-112
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,544 K — cooler than the Sun (5,778 K)
Estimated Age
12.88 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.841 R☉
Stellar Mass
0.782 M☉
Metallicity [Fe/H]
-0.52
Extended Stellar Properties
Surface gravity (log g)
4.506 dex
Stellar density
1.160 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.920 mas
Total Proper Motion
25.951 mas/yr
PM Right Ascension
22.62 mas/yr
PM Declination
-12.73 mas/yr
Galactic Cartesian (pc)
x = 0.331 · y = -0.650 · z = 0.685
Equatorial (J2000)
RA 296.98114° · Dec 43.20970°
Galactic ℓ, b
77.260° · 8.855°
Ecliptic λ, β
315.618° · 62.441°
HTM-20 index
1518604568
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Kepler-68 b
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