Key parameters at a glance
- A radius of 1.50 Earth radii
- A mass of 2.86 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 11.187 days
- Semi-major axis 0.0950 AU
- Equilibrium temperature 667 K (394 °C)
- Distance from Earth 2,041.99 light-years
- Earth Similarity Index 0.453
- Travel time at Voyager 1 speed 36,010,509 years
1 sibling around Kepler-246
Kepler-246 c 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-246 b | Sub-Neptune | 2.34 | 6.08 | 4.602 | 896 | 2014 |
| Kepler-246 c this | Super-Earth | 1.50 | 2.86 | 11.187 | 667 | 2014 |
Kepler-246 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#748of 1176
top 63.5%
This planet
1.50R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-246 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.50 | 11.21 |
| Mass (M⊕) | 1.00 | 2.86 | 317.83 |
| Density (g/cm³) | 5.51 | 4.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 43.21 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 272484980
Gaia DR2
Gaia DR2 2077203728052488192
Gaia DR3
Gaia DR3 2077203728052488192
System
Kepler-246
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.19 Earth days (3.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0950 AU.
Transit Fingerprint
Depth
0.035 %
Duration
3.161 h
Impact parameter b
0.040
Rp / R★
0.017042
Transit midpoint (BJD)
2,454,970.1817
Photometric dip
Transit produces a flux drop of 354 ppm lasting ≈ 3.16 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017042
Semi-major axis / stellar radius
24.720
Impact parameter (b)
0.040
Transit mid-time (BJD)
2,454,970.1817
Angular separation (arcsec)
0.15200
Eq. Temperature
667K
(394 °C)
Insolation (S⊕)
43.21
Earth = 1.00
Earth Similarity (ESI)
0.453
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-246
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,206 K — cooler than the Sun (5,778 K)
Estimated Age
1.26 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.831 R☉
Stellar Mass
0.853 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.557 dex
Stellar density
1.850 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.569 mas
Total Proper Motion
9.855 mas/yr
PM Right Ascension
-1.80 mas/yr
PM Declination
-9.69 mas/yr
Galactic Cartesian (pc)
x = 0.328 · y = -0.658 · z = 0.678
Equatorial (J2000)
RA 296.48340° · Dec 42.66338°
Galactic ℓ, b
76.597° · 8.909°
Ecliptic λ, β
314.444° · 62.077°
HTM-20 index
1384818628
Similar Worlds
Kepler-207 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,855.6 ly
Kepler-154 e
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,985.0 ly
Kepler-598 b
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Radius 1.50 R⊕ · 2,221.4 ly
Kepler-273 b
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Kepler-154 f
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K2-223 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 647.8 ly