Key parameters at a glance
- A radius of 1.61 Earth radii
- A mass of 3.22 Earth masses
- Surface gravity around 1.24 g
- An orbital period of 10.864 days
- Semi-major axis 0.0790 AU
- Equilibrium temperature 495 K (222 °C)
- Distance from Earth 544.68 light-years
- Earth Similarity Index 0.553
- Travel time at Voyager 1 speed 9,605,440 years
- Almost certainly tidally locked to its host star given the close orbit
Context from the literature
Kepler-296b is an s-type exoplanet located in the binary star system Kepler-296. All 5 planets in this system orbit around the primary star.
Excerpted from Wikipedia · full article
4 siblings around Kepler-296
Kepler-296 b shares its host star with 4 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-296 c | Sub-Neptune | 2.00 | 4.66 | 5.842 | 606 | 2014 |
| Kepler-296 b this | Super-Earth | 1.61 | 3.22 | 10.864 | 495 | 2014 |
| Kepler-296 d | Sub-Neptune | 2.09 | 5.02 | 19.850 | 403 | 2014 |
| Kepler-296 e | Super-Earth | 1.53 | 2.96 | 34.142 | 337 | 2014 |
| Kepler-296 f | Super-Earth | 1.80 | 3.89 | 63.336 | 274 | 2014 |
Kepler-296 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#550of 1176
top 46.7%
This planet
1.61R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-296 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.61 | 11.21 |
| Mass (M⊕) | 1.00 | 3.22 | 317.83 |
| Density (g/cm³) | 5.51 | 3.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.24 | 2.53 |
| Insolation (S⊕) | 1.00 | 6.50 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 243271945
Gaia DR2
Gaia DR2 2132069633148965888
Gaia DR3
Gaia DR3 2132069633148965888
System
Kepler-296
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 10.86 Earth days (3.0% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0790 AU.
Transit Fingerprint
Depth
0.075 %
Duration
1.853 h
Impact parameter b
0.650
Rp / R★
0.030800
Transit midpoint (BJD)
2,454,964.1285
Photometric dip
Transit produces a flux drop of 749 ppm lasting ≈ 1.85 h.
Extended Orbital Architecture
Planet / star radius ratio
0.030800
Semi-major axis / stellar radius
35.500
Impact parameter (b)
0.650
Transit mid-time (BJD)
2,454,964.1285
Angular separation (arcsec)
0.47300
Eq. Temperature
495K
(222 °C)
Insolation (S⊕)
6.50
Earth = 1.00
Earth Similarity (ESI)
0.553
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-296
Spectral Class
M-type red dwarf
Effective Temperature
3,740 K — cooler than the Sun (5,778 K)
Estimated Age
4.20 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.480 R☉
Stellar Mass
0.498 M☉
Metallicity [Fe/H]
-0.08
Extended Stellar Properties
Surface gravity (log g)
4.774 dex
Stellar density
6.400 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Total Proper Motion
11.640 mas/yr
PM Right Ascension
1.84 mas/yr
PM Declination
-11.49 mas/yr
Galactic Cartesian (pc)
x = 0.185 · y = -0.623 · z = 0.760
Equatorial (J2000)
RA 286.54003° · Dec 49.43726°
Galactic ℓ, b
79.901° · 18.014°
Ecliptic λ, β
304.458° · 70.904°
HTM-20 index
339564586
Similar Worlds
K2-133 c
Super-Earth · M-type red dwarf
Radius 1.60 R⊕ · 245.2 ly
Kepler-1652 b
Super-Earth · M-type red dwarf
Radius 1.60 R⊕ · 821.9 ly
Kepler-114 c
Super-Earth · M-type red dwarf
Radius 1.60 R⊕ · 846.5 ly
Kepler-49 d
Super-Earth · M-type red dwarf
Radius 1.60 R⊕ · 1,015.1 ly
L 98-59 d
Super-Earth · M-type red dwarf
Radius 1.63 R⊕ · 34.6 ly
L 168-9 b
Super-Earth · M-type red dwarf
Radius 1.63 R⊕ · 82.0 ly