Key parameters at a glance
- A radius of 0.95 Earth radii
- A mass of 0.81 Earth masses
- Surface gravity around 0.90 g
- An orbital period of 7.411 days
- Semi-major axis 0.0699 AU
- Equilibrium temperature 850 K (577 °C)
- Distance from Earth 1,319.44 light-years
- Earth Similarity Index 0.379
- Travel time at Voyager 1 speed 23,268,288 years
2 siblings around Kepler-271
Kepler-271 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-271 d | Rocky Terrestrial | 0.66 | 0.22 | 5.250 | 954 | 2016 |
| Kepler-271 c this | Rocky Terrestrial | 0.95 | 0.81 | 7.411 | 850 | 2014 |
| Kepler-271 b | Rocky Terrestrial | 1.23 | 2.04 | 10.435 | 759 | 2014 |
Kepler-271 c Planet Profile
Physical Specs
Classification
Planet Type
Rocky Terrestrial
Discovery
Size rank in cohort
Rank by radius
#376of 570
top 65.8%
This planet
0.95R⊕
Rocky Terrestrial median
1.01R⊕
Nearest-size peers
| Metric | Earth | Kepler-271 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 0.95 | 11.21 |
| Mass (M⊕) | 1.00 | 0.81 | 317.83 |
| Density (g/cm³) | 5.51 | 5.18 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.90 | 2.53 |
| Insolation (S⊕) | 1.00 | 119.63 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 164414655
Gaia DR2
Gaia DR2 2105343799713595904
Gaia DR3
Gaia DR3 2105343799713595904
System
Kepler-271
Percentile among Rocky Terrestrial cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.41 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0699 AU.
Transit Fingerprint
Depth
0.012 %
Duration
3.277 h
Impact parameter b
0.064
Rp / R★
0.010479
Transit midpoint (BJD)
2,454,968.7527
Photometric dip
Transit produces a flux drop of 124 ppm lasting ≈ 3.28 h.
Extended Orbital Architecture
Planet / star radius ratio
0.010479
Semi-major axis / stellar radius
17.600
Impact parameter (b)
0.064
Transit mid-time (BJD)
2,454,968.7527
Angular separation (arcsec)
0.17300
Eq. Temperature
850K
(577 °C)
Insolation (S⊕)
119.63
Earth = 1.00
Earth Similarity (ESI)
0.379
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-271
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,555 K — cooler than the Sun (5,778 K)
Estimated Age
4.57 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.870 R☉
Stellar Mass
0.900 M☉
Metallicity [Fe/H]
-0.13
Extended Stellar Properties
Surface gravity (log g)
4.520 dex
Stellar density
1.360 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.443 mas
Total Proper Motion
27.419 mas/yr
PM Right Ascension
-9.29 mas/yr
PM Declination
-25.80 mas/yr
Galactic Cartesian (pc)
x = 0.161 · y = -0.698 · z = 0.698
Equatorial (J2000)
RA 283.00293° · Dec 44.28411°
Galactic ℓ, b
73.928° · 18.468°
Ecliptic λ, β
293.969° · 66.645°
HTM-20 index
335653924
Similar Worlds
Kepler-106 d
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.95 R⊕ · 1,449.2 ly
Kepler-1598 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.95 R⊕ · 2,021.7 ly
Kepler-20 f
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.95 R⊕ · 921.6 ly
Kepler-1689 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.95 R⊕ · 959.3 ly
Kepler-399 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.96 R⊕ · 2,415.3 ly
Kepler-1572 b
Rocky Terrestrial · G-type yellow (Sun-like)
Radius 0.94 R⊕ · 3,087.4 ly