Key parameters at a glance
- A radius of 2.01 Earth radii
- A mass of 4.70 Earth masses
- Surface gravity around 1.16 g
- An orbital period of 11.476 days
- Semi-major axis 0.1070 AU
- Equilibrium temperature 984 K (711 °C)
- Distance from Earth 3,094.51 light-years
- Earth Similarity Index 0.276
- Travel time at Voyager 1 speed 54,571,613 years
1 sibling around Kepler-270
Kepler-270 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-270 b this | Sub-Neptune | 2.01 | 4.70 | 11.476 | 984 | 2014 |
| Kepler-270 c | Super-Earth | 1.77 | 3.78 | 25.263 | 756 | 2014 |
Kepler-270 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1940of 1978
top 98.0%
This planet
2.01R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-270 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.01 | 11.21 |
| Mass (M⊕) | 1.00 | 4.70 | 317.83 |
| Density (g/cm³) | 5.51 | 3.18 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.16 | 2.53 |
| Insolation (S⊕) | 1.00 | 178.36 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 123417308
Gaia DR2
Gaia DR2 2105415306628609024
Gaia DR3
Gaia DR3 2105415306628609024
System
Kepler-270
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.48 Earth days (3.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1070 AU.
Transit Fingerprint
Depth
0.018 %
Duration
4.865 h
Impact parameter b
0.140
Rp / R★
0.012904
Transit midpoint (BJD)
2,454,968.3951
Photometric dip
Transit produces a flux drop of 182 ppm lasting ≈ 4.87 h.
Extended Orbital Architecture
Planet / star radius ratio
0.012904
Semi-major axis / stellar radius
11.800
Impact parameter (b)
0.140
Transit mid-time (BJD)
2,454,968.3951
Angular separation (arcsec)
0.11300
Eq. Temperature
984K
(711 °C)
Insolation (S⊕)
178.36
Earth = 1.00
Earth Similarity (ESI)
0.276
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-270
Spectral Class
F-type yellow-white
Effective Temperature
6,067 K — hotter than the Sun (5,778 K)
Estimated Age
2.73 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.461 R☉
Stellar Mass
1.170 M☉
Metallicity [Fe/H]
0.15
Extended Stellar Properties
Surface gravity (log g)
4.196 dex
Stellar density
0.630 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.025 mas
Total Proper Motion
2.799 mas/yr
PM Right Ascension
2.46 mas/yr
PM Declination
1.33 mas/yr
Galactic Cartesian (pc)
x = 0.151 · y = -0.698 · z = 0.700
Equatorial (J2000)
RA 282.20012° · Dec 44.42228°
Galactic ℓ, b
73.858° · 19.055°
Ecliptic λ, β
292.626° · 66.906°
HTM-20 index
-203506100
Similar Worlds
K2-243 c
Sub-Neptune · F-type yellow-white
Radius 2.01 R⊕ · 870.4 ly
HR 858 b
Sub-Neptune · F-type yellow-white
Radius 2.00 R⊕ · 104.3 ly
HR 858 d
Sub-Neptune · F-type yellow-white
Radius 2.00 R⊕ · 104.3 ly
DMPP-1 d
Sub-Neptune · F-type yellow-white
Radius 2.02 R⊕ · 204.0 ly
Kepler-1111 b
Sub-Neptune · F-type yellow-white
Radius 2.00 R⊕ · 2,744.7 ly
Kepler-1422 b
Sub-Neptune · F-type yellow-white
Radius 2.02 R⊕ · 8,042.5 ly