Key parameters at a glance
- A radius of 1.36 Earth radii
- A mass of 2.42 Earth masses
- Surface gravity around 1.31 g
- An orbital period of 11.323 days
- Semi-major axis 0.0848 AU
- Equilibrium temperature 554 K (281 °C)
- Distance from Earth 1,423.69 light-years
- Earth Similarity Index 0.557
- Travel time at Voyager 1 speed 25,106,723 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-1246 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#981of 1176
top 83.3%
This planet
1.36R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1246 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.36 | 11.21 |
| Mass (M⊕) | 1.00 | 2.42 | 317.83 |
| Density (g/cm³) | 5.51 | 5.29 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.31 | 2.53 |
| Insolation (S⊕) | 1.00 | 26.45 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 298785034
Gaia DR2
Gaia DR2 2131238230560301440
Gaia DR3
Gaia DR3 2131238230560301440
System
Kepler-1246
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.32 Earth days (3.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0848 AU.
Transit Fingerprint
Depth
0.028 %
Duration
3.027 h
Impact parameter b
0.826
Rp / R★
0.017589
Transit midpoint (BJD)
2,454,969.0566
Photometric dip
Transit produces a flux drop of 284 ppm lasting ≈ 3.03 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017589
Semi-major axis / stellar radius
9.200
Impact parameter (b)
0.826
Transit mid-time (BJD)
2,454,969.0566
Angular separation (arcsec)
0.19400
Eq. Temperature
554K
(281 °C)
Insolation (S⊕)
26.45
Earth = 1.00
Earth Similarity (ESI)
0.557
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1246
Spectral Class
K-type orange
Effective Temperature
4,611 K — cooler than the Sun (5,778 K)
Estimated Age
3.89 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.690 R☉
Stellar Mass
0.730 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.630 dex
Stellar density
0.115 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.263 mas
Total Proper Motion
27.932 mas/yr
PM Right Ascension
-25.10 mas/yr
PM Declination
12.27 mas/yr
Galactic Cartesian (pc)
x = 0.199 · y = -0.625 · z = 0.755
Equatorial (J2000)
RA 287.65723° · Dec 48.98221°
Galactic ℓ, b
79.736° · 17.169°
Ecliptic λ, β
306.031° · 70.221°
HTM-20 index
695723843
Similar Worlds
Kepler-1459 b
Super-Earth · K-type orange
Radius 1.36 R⊕ · 1,485.6 ly
Kepler-1680 b
Super-Earth · K-type orange
Radius 1.36 R⊕ · 1,012.1 ly
K2-368 c
Super-Earth · K-type orange
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Kepler-935 b
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Kepler-240 b
Super-Earth · K-type orange
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Kepler-1265 b
Super-Earth · K-type orange
Radius 1.35 R⊕ · 1,903.6 ly