Key parameters at a glance
- A radius of 3.07 Earth radii
- A mass of 9.64 Earth masses
- Surface gravity around 1.02 g
- An orbital period of 19.254 days
- Semi-major axis 0.1440 AU
- Equilibrium temperature 657 K (384 °C)
- Distance from Earth 3,178.82 light-years
- Earth Similarity Index 0.355
- Travel time at Voyager 1 speed 56,058,558 years
1 sibling around Kepler-293
Kepler-293 b 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-293 b this | Sub-Neptune | 3.07 | 9.64 | 19.254 | 657 | 2014 |
| Kepler-293 c | Sub-Neptune | 3.83 | 14.00 | 54.156 | 466 | 2014 |
Kepler-293 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#456of 1978
top 23.0%
This planet
3.07R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-293 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.07 | 11.21 |
| Mass (M⊕) | 1.00 | 9.64 | 317.83 |
| Density (g/cm³) | 5.51 | 1.83 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.02 | 2.53 |
| Insolation (S⊕) | 1.00 | 28.94 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158216544
Gaia DR2
Gaia DR2 2105506119417943168
Gaia DR3
Gaia DR3 2105506119417943168
System
Kepler-293
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 19.25 Earth days (5.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1440 AU.
Transit Fingerprint
Depth
0.099 %
Duration
4.533 h
Impact parameter b
0.500
Rp / R★
0.029161
Transit midpoint (BJD)
2,454,997.7813
Photometric dip
Transit produces a flux drop of 988 ppm lasting ≈ 4.53 h.
Extended Orbital Architecture
Planet / star radius ratio
0.029161
Semi-major axis / stellar radius
32.870
Impact parameter (b)
0.500
Transit mid-time (BJD)
2,454,997.7813
Angular separation (arcsec)
0.14800
Eq. Temperature
657K
(384 °C)
Insolation (S⊕)
28.94
Earth = 1.00
Earth Similarity (ESI)
0.355
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
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-293
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,804 K — hotter than the Sun (5,778 K)
Estimated Age
1.32 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.957 R☉
Stellar Mass
0.934 M☉
Metallicity [Fe/H]
0.10
Extended Stellar Properties
Surface gravity (log g)
4.504 dex
Stellar density
1.510 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.998 mas
Total Proper Motion
0.797 mas/yr
PM Right Ascension
-0.78 mas/yr
PM Declination
-0.17 mas/yr
Galactic Cartesian (pc)
x = 0.208 · y = -0.708 · z = 0.674
Equatorial (J2000)
RA 286.35806° · Dec 42.40649°
Galactic ℓ, b
73.038° · 15.510°
Ecliptic λ, β
298.574° · 64.232°
HTM-20 index
1258884026
Similar Worlds
Kepler-238 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.07 R⊕ · 5,866.7 ly
Kepler-1494 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.07 R⊕ · 4,192.7 ly
Kepler-335 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.07 R⊕ · 4,171.4 ly
Kepler-1929 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.07 R⊕ · 1,657.5 ly
HD 63935 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.06 R⊕ · 159.7 ly
Kepler-941 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.08 R⊕ · 3,549.8 ly