Key parameters at a glance
- A radius of 2.25 Earth radii
- A mass of 5.69 Earth masses
- Surface gravity around 1.12 g
- An orbital period of 10.937 days
- Semi-major axis 0.0910 AU
- Equilibrium temperature 777 K (504 °C)
- Distance from Earth 2,901.51 light-years
- Earth Similarity Index 0.339
- Travel time at Voyager 1 speed 51,168,124 years
2 siblings around Kepler-272
Kepler-272 d 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-272 b | Super-Earth | 1.43 | 78.00 | 2.971 | 1,200 | 2014 |
| Kepler-272 c | Super-Earth | 1.79 | 97.80 | 6.057 | 947 | 2014 |
| Kepler-272 d this | Sub-Neptune | 2.25 | 5.69 | 10.937 | 777 | 2014 |
Kepler-272 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1589of 1978
top 80.3%
This planet
2.25R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-272 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.25 | 11.21 |
| Mass (M⊕) | 1.00 | 5.69 | 317.83 |
| Density (g/cm³) | 5.51 | 2.74 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.12 | 2.53 |
| Insolation (S⊕) | 1.00 | 141.14 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 268704766
Gaia DR2
Gaia DR2 2085701097508446464
Gaia DR3
Gaia DR3 2085701097508446464
System
Kepler-272
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 10.94 Earth days (3.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0910 AU.
Transit Fingerprint
Depth
0.042 %
Duration
3.084 h
Impact parameter b
0.890
Rp / R★
0.018960
Transit midpoint (BJD)
2,454,969.9850
Photometric dip
Transit produces a flux drop of 422 ppm lasting ≈ 3.08 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018960
Semi-major axis / stellar radius
15.300
Impact parameter (b)
0.890
Transit mid-time (BJD)
2,454,969.9850
Angular separation (arcsec)
0.10200
Eq. Temperature
777K
(504 °C)
Insolation (S⊕)
141.14
Earth = 1.00
Earth Similarity (ESI)
0.339
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-272
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,297 K — cooler than the Sun (5,778 K)
Estimated Age
13.18 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.929 R☉
Stellar Mass
0.910 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.426 dex
Stellar density
0.570 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.095 mas
Total Proper Motion
2.295 mas/yr
PM Right Ascension
-1.86 mas/yr
PM Declination
-1.35 mas/yr
Galactic Cartesian (pc)
x = 0.328 · y = -0.589 · z = 0.738
Equatorial (J2000)
RA 299.12753° · Dec 47.59383°
Galactic ℓ, b
81.877° · 9.704°
Ecliptic λ, β
323.061° · 65.753°
HTM-20 index
175464072
Similar Worlds
Kepler-300 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.25 R⊕ · 3,582.7 ly
Kepler-1090 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.25 R⊕ · 2,800.9 ly
Kepler-467 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.25 R⊕ · 1,520.8 ly
Kepler-1381 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.25 R⊕ · 3,904.2 ly
Kepler-172 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.25 R⊕ · 2,702.5 ly
K2-355 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.25 R⊕ · 1,632.4 ly