Key parameters at a glance
- A radius of 13.50 Earth radii
- A mass of 119.50 Earth masses
- Surface gravity around 0.66 g
- An orbital period of 57.011 days
- Semi-major axis 0.2799 AU
- Equilibrium temperature 455 K (182 °C)
- Distance from Earth 2,534.43 light-years
- Earth Similarity Index 0.248
- Travel time at Voyager 1 speed 44,694,632 years
2 siblings around Kepler-46
Kepler-46 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-46 d | Super-Earth | 1.64 | 3.33 | 6.767 | 845 | 2014 |
| Kepler-46 b | Neptune-like | 9.06 | 1,907.00 | 33.601 | 543 | 2012 |
| Kepler-46 c this | Gas Giant | 13.50 | 119.50 | 57.011 | 455 | 2012 |
Kepler-46 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#671of 1771
top 37.8%
This planet
13.50R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Kepler-46 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.50 | 11.21 |
| Mass (M⊕) | 1.00 | 119.50 | 317.83 |
| Density (g/cm³) | 5.51 | 0.27 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.66 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 119.499 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 158992508
Gaia DR2
Gaia DR2 2102700131386216576
Gaia DR3
Gaia DR3 2102700131386216576
System
Kepler-46
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 57.01 Earth days (15.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2799 AU.
Extended Orbital Architecture
Semi-major axis / stellar radius
64.100
Impact parameter (b)
1.483
Long. of periastron (ω)
330.00°
Angular separation (arcsec)
0.36000
Eq. Temperature
455K
(182 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.248
0 = alien, 1 = Earth-identical
Insufficient insolation data — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Nesvorny et al. 2012Instrument
Kepler CCD Array
Publication
2012-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2012 at Kepler (12 shown).
Host System: Kepler-46
Spectral Class
K-type orange
Effective Temperature
5,155 K — cooler than the Sun (5,778 K)
Estimated Age
9.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.938 R☉
Stellar Mass
0.902 M☉
Metallicity [Fe/H]
0.41
Extended Stellar Properties
Surface gravity (log g)
4.447 dex
Stellar density
1.530 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.259 mas
Total Proper Motion
3.280 mas/yr
PM Right Ascension
3.16 mas/yr
PM Declination
0.89 mas/yr
Galactic Cartesian (pc)
x = 0.243 · y = -0.695 · z = 0.677
Equatorial (J2000)
RA 289.26874° · Dec 42.60418°
Galactic ℓ, b
74.114° · 13.624°
Ecliptic λ, β
303.407° · 63.825°
HTM-20 index
951086412
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