Key parameters at a glance
- A radius of 1.51 Earth radii
- A mass of 2.89 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 7.114 days
- Semi-major axis 0.0580 AU
- Equilibrium temperature 429 K (156 °C)
- Distance from Earth 621.00 light-years
- Earth Similarity Index 0.675
- Travel time at Voyager 1 speed 10,951,410 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around Kepler-249
Kepler-249 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-249 b | Rocky Terrestrial | 1.09 | 1.32 | 3.307 | 554 | 2014 |
| Kepler-249 c this | Super-Earth | 1.51 | 2.89 | 7.114 | 429 | 2014 |
| Kepler-249 d | Super-Earth | 1.57 | 3.09 | 15.368 | 332 | 2014 |
Kepler-249 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#730of 1176
top 62.0%
This planet
1.51R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-249 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.51 | 11.21 |
| Mass (M⊕) | 1.00 | 2.89 | 317.83 |
| Density (g/cm³) | 5.51 | 4.61 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 12.53 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 272942100
Gaia DR2
Gaia DR2 2078807228323035008
Gaia DR3
Gaia DR3 2078807228323035008
System
Kepler-249
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.11 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0580 AU.
Transit Fingerprint
Depth
0.081 %
Duration
2.219 h
Impact parameter b
0.790
Rp / R★
0.025862
Transit midpoint (BJD)
2,455,007.3246
Photometric dip
Transit produces a flux drop of 808 ppm lasting ≈ 2.22 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025862
Semi-major axis / stellar radius
24.230
Impact parameter (b)
0.790
Transit mid-time (BJD)
2,455,007.3246
Angular separation (arcsec)
0.30500
Eq. Temperature
429K
(156 °C)
Insolation (S⊕)
12.53
Earth = 1.00
Earth Similarity (ESI)
0.675
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
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-249
Spectral Class
M-type red dwarf
Effective Temperature
3,568 K — cooler than the Sun (5,778 K)
Estimated Age
3.86 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.482 R☉
Stellar Mass
0.510 M☉
Metallicity [Fe/H]
-0.34
Extended Stellar Properties
Surface gravity (log g)
4.777 dex
Stellar density
5.345 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
5.223 mas
Total Proper Motion
37.825 mas/yr
PM Right Ascension
33.52 mas/yr
PM Declination
17.52 mas/yr
Galactic Cartesian (pc)
x = 0.328 · y = -0.645 · z = 0.690
Equatorial (J2000)
RA 296.98530° · Dec 43.65860°
Galactic ℓ, b
77.658° · 9.071°
Ecliptic λ, β
316.008° · 62.853°
HTM-20 index
1531327809
Similar Worlds
GJ 273 b
Super-Earth · M-type red dwarf
Radius 1.51 R⊕ · 19.3 ly
Kepler-205 b
Super-Earth · M-type red dwarf
Radius 1.51 R⊕ · 520.9 ly
Kepler-138 d
Super-Earth · M-type red dwarf
Radius 1.51 R⊕ · 218.1 ly
Kepler-138 c
Super-Earth · M-type red dwarf
Radius 1.51 R⊕ · 218.1 ly
TOI-771 c
Super-Earth · M-type red dwarf
Radius 1.50 R⊕ · 82.4 ly
Kepler-446 b
Super-Earth · M-type red dwarf
Radius 1.50 R⊕ · 314.2 ly