Key parameters at a glance
- A radius of 3.96 Earth radii
- A mass of 14.90 Earth masses
- Surface gravity around 0.95 g
- An orbital period of 160.018 days
- Semi-major axis 0.5710 AU
- Equilibrium temperature 306 K (33 °C)
- Distance from Earth 1,862.46 light-years
- Earth Similarity Index 0.610
- Travel time at Voyager 1 speed 32,844,509 years
2 siblings around Kepler-149
Kepler-149 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-149 b | 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 this | Sub-Neptune | 3.96 | 14.90 | 160.018 | 306 | 2014 |
Kepler-149 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#4of 1978
top 0.2%
This planet
3.96R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-149 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.96 | 11.21 |
| Mass (M⊕) | 1.00 | 14.90 | 317.83 |
| Density (g/cm³) | 5.51 | 1.32 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.95 | 2.53 |
| Insolation (S⊕) | 1.00 | 2.45 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 120638033
Gaia DR2
Gaia DR2 2100015089629466112
Gaia DR3
Gaia DR3 2100015089629466112
System
Kepler-149
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 160.02 Earth days (43.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5710 AU.
Transit Fingerprint
Depth
0.155 %
Duration
5.150 h
Impact parameter b
0.620
Rp / R★
0.038964
Transit midpoint (BJD)
2,455,084.2835
Photometric dip
Transit produces a flux drop of 1,553 ppm lasting ≈ 5.15 h.
Extended Orbital Architecture
Planet / star radius ratio
0.038964
Semi-major axis / stellar radius
127.000
Impact parameter (b)
0.620
Transit mid-time (BJD)
2,455,084.2835
Angular separation (arcsec)
1.00000
Eq. Temperature
306K
(33 °C)
Insolation (S⊕)
2.45
Earth = 1.00
Earth Similarity (ESI)
0.610
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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-976 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.96 R⊕ · 3,302.0 ly
Kepler-1405 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.96 R⊕ · 4,991.2 ly
Kepler-1719 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.95 R⊕ · 2,953.0 ly
Kepler-178 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.95 R⊕ · 2,335.4 ly
K2-193 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.95 R⊕ · 1,343.5 ly
TOI-2141 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.97 R⊕ · 253.4 ly