Key parameters at a glance
- A radius of 3.22 Earth radii
- A mass of 10.50 Earth masses
- Surface gravity around 1.01 g
- An orbital period of 4.176 days
- Semi-major axis 0.0482 AU
- Equilibrium temperature 876 K (603 °C)
- Distance from Earth 1,000.00 light-years
- Earth Similarity Index 0.261
- Travel time at Voyager 1 speed 17,635,013 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-472 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#332of 1978
top 16.7%
This planet
3.22R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-472 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.22 | 11.21 |
| Mass (M⊕) | 1.00 | 10.50 | 317.83 |
| Density (g/cm³) | 5.51 | 1.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.01 | 2.53 |
| Insolation (S⊕) | 1.00 | 139.24 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 184554925
Gaia DR2
Gaia DR2 2073277200237694464
Gaia DR3
Gaia DR3 2073277200237694464
System
Kepler-472
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.18 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0482 AU.
Transit Fingerprint
Depth
0.136 %
Duration
3.701 h
Impact parameter b
0.596
Rp / R★
0.037569
Transit midpoint (BJD)
2,454,966.0903
Photometric dip
Transit produces a flux drop of 1,360 ppm lasting ≈ 3.70 h.
Extended Orbital Architecture
Planet / star radius ratio
0.037569
Semi-major axis / stellar radius
7.490
Impact parameter (b)
0.596
Transit mid-time (BJD)
2,454,966.0903
Angular separation (arcsec)
0.15700
Eq. Temperature
876K
(603 °C)
Insolation (S⊕)
139.24
Earth = 1.00
Earth Similarity (ESI)
0.261
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
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-472
Spectral Class
K-type orange
Effective Temperature
4,996 K — cooler than the Sun (5,778 K)
Estimated Age
2.69 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.780 R☉
Stellar Mass
0.850 M☉
Metallicity [Fe/H]
0.16
Extended Stellar Properties
Surface gravity (log g)
4.590 dex
Stellar density
1.800 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.233 mas
Total Proper Motion
39.478 mas/yr
PM Right Ascension
34.41 mas/yr
PM Declination
19.34 mas/yr
Galactic Cartesian (pc)
x = 0.346 · y = -0.693 · z = 0.633
Equatorial (J2000)
RA 296.52452° · Dec 39.24985°
Galactic ℓ, b
73.601° · 7.220°
Ecliptic λ, β
312.000° · 58.882°
HTM-20 index
-1175170006
Similar Worlds
TOI-5704 b
Sub-Neptune · K-type orange
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HD 48948 d
Sub-Neptune · K-type orange
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K2-36 c
Sub-Neptune · K-type orange
Radius 3.20 R⊕ · 358.0 ly
TOI-332 b
Sub-Neptune · K-type orange
Radius 3.20 R⊕ · 726.8 ly
Kepler-742 b
Sub-Neptune · K-type orange
Radius 3.24 R⊕ · 1,595.7 ly
HD 20781 d
Sub-Neptune · K-type orange
Radius 3.25 R⊕ · 117.3 ly