Key parameters at a glance
- A radius of 3.06 Earth radii
- A mass of 9.59 Earth masses
- Surface gravity around 1.02 g
- An orbital period of 15.229 days
- Semi-major axis 0.1160 AU
- Equilibrium temperature 639 K (366 °C)
- Distance from Earth 2,119.75 light-years
- Earth Similarity Index 0.365
- Travel time at Voyager 1 speed 37,381,786 years
1 sibling around Kepler-151
Kepler-151 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-151 b this | Sub-Neptune | 3.06 | 9.59 | 15.229 | 639 | 2014 |
| Kepler-151 c | Sub-Neptune | 2.09 | 5.02 | 24.675 | 544 | 2014 |
Kepler-151 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#466of 1978
top 23.5%
This planet
3.06R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-151 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.06 | 11.21 |
| Mass (M⊕) | 1.00 | 9.59 | 317.83 |
| Density (g/cm³) | 5.51 | 1.84 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.02 | 2.53 |
| Insolation (S⊕) | 1.00 | 40.73 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137410997
Gaia DR2
Gaia DR2 2053585732948605952
Gaia DR3
Gaia DR3 2053585732948605952
System
Kepler-151
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 15.23 Earth days (4.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1160 AU.
Transit Fingerprint
Depth
0.112 %
Duration
2.645 h
Impact parameter b
0.790
Rp / R★
0.033340
Transit midpoint (BJD)
2,455,009.5598
Photometric dip
Transit produces a flux drop of 1,125 ppm lasting ≈ 2.65 h.
Extended Orbital Architecture
Planet / star radius ratio
0.033340
Semi-major axis / stellar radius
30.600
Impact parameter (b)
0.790
Transit mid-time (BJD)
2,455,009.5598
Angular separation (arcsec)
0.17800
Eq. Temperature
639K
(366 °C)
Insolation (S⊕)
40.73
Earth = 1.00
Earth Similarity (ESI)
0.365
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-151
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,460 K — cooler than the Sun (5,778 K)
Estimated Age
4.60 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.830 R☉
Stellar Mass
0.870 M☉
Metallicity [Fe/H]
0.12
Extended Stellar Properties
Surface gravity (log g)
4.555 dex
Stellar density
7.403 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.510 mas
Total Proper Motion
9.945 mas/yr
PM Right Ascension
0.79 mas/yr
PM Declination
-9.91 mas/yr
Galactic Cartesian (pc)
x = 0.285 · y = -0.699 · z = 0.656
Equatorial (J2000)
RA 292.16279° · Dec 41.02319°
Galactic ℓ, b
73.605° · 10.996°
Ecliptic λ, β
306.831° · 61.658°
HTM-20 index
1763253159
Similar Worlds
Kepler-351 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.06 R⊕ · 3,535.2 ly
Kepler-760 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.06 R⊕ · 2,584.3 ly
Kepler-474 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.06 R⊕ · 2,744.6 ly
HD 63935 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.06 R⊕ · 159.7 ly
Kepler-1204 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.05 R⊕ · 3,833.1 ly
Kepler-238 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.07 R⊕ · 5,866.7 ly