Key parameters at a glance
- A radius of 4.21 Earth radii
- A mass of 16.50 Earth masses
- Surface gravity around 0.93 g
- An orbital period of 29.199 days
- Semi-major axis 0.1840 AU
- Equilibrium temperature 540 K (267 °C)
- Distance from Earth 1,862.46 light-years
- Earth Similarity Index 0.374
- Travel time at Voyager 1 speed 32,844,509 years
2 siblings around Kepler-149
Kepler-149 b 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-149 b this | Neptune-like | 4.21 | 16.50 | 29.199 | 540 | 2014 |
| Kepler-149 c | Super-Earth | 1.61 | 3.22 | 55.328 | 436 | 2014 |
| Kepler-149 d | Sub-Neptune | 3.96 | 14.90 | 160.018 | 306 | 2014 |
Kepler-149 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#514of 574
top 89.4%
This planet
4.21R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-149 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.21 | 11.21 |
| Mass (M⊕) | 1.00 | 16.50 | 317.83 |
| Density (g/cm³) | 5.51 | 1.22 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | 23.64 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 120638033
Gaia DR2
Gaia DR2 2100015089629466112
Gaia DR3
Gaia DR3 2100015089629466112
System
Kepler-149
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 29.20 Earth days (8.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1840 AU.
Transit Fingerprint
Depth
0.205 %
Duration
5.074 h
Impact parameter b
0.020
Rp / R★
0.041512
Transit midpoint (BJD)
2,455,018.4402
Photometric dip
Transit produces a flux drop of 2,047 ppm lasting ≈ 5.07 h.
Extended Orbital Architecture
Planet / star radius ratio
0.041512
Semi-major axis / stellar radius
45.558
Impact parameter (b)
0.020
Transit mid-time (BJD)
2,455,018.4402
Angular separation (arcsec)
0.32200
Eq. Temperature
540K
(267 °C)
Insolation (S⊕)
23.64
Earth = 1.00
Earth Similarity (ESI)
0.374
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-149
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,381 K — cooler than the Sun (5,778 K)
Estimated Age
14.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.953 R☉
Stellar Mass
1.013 M☉
Metallicity [Fe/H]
0.38
Extended Stellar Properties
Surface gravity (log g)
4.465 dex
Stellar density
1.120 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
1.722 mas
Total Proper Motion
5.538 mas/yr
PM Right Ascension
-1.96 mas/yr
PM Declination
-5.18 mas/yr
Galactic Cartesian (pc)
x = 0.214 · y = -0.754 · z = 0.621
Equatorial (J2000)
RA 285.85370° · Dec 38.38409°
Galactic ℓ, b
69.054° · 14.282°
Ecliptic λ, β
295.702° · 60.416°
HTM-20 index
772216789
Similar Worlds
Kepler-953 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.21 R⊕ · 844.4 ly
Kepler-511 c
Neptune-like · G-type yellow (Sun-like)
Radius 4.21 R⊕ · 2,126.5 ly
Kepler-549 d
Neptune-like · G-type yellow (Sun-like)
Radius 4.20 R⊕ · 2,071.6 ly
Kepler-610 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.19 R⊕ · 2,758.7 ly
Kepler-11 e
Neptune-like · G-type yellow (Sun-like)
Radius 4.19 R⊕ · 2,108.1 ly
K2-198 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.19 R⊕ · 360.6 ly