Key parameters at a glance
- A radius of 2.19 Earth radii
- A mass of 5.43 Earth masses
- Surface gravity around 1.13 g
- An orbital period of 247.354 days
- Semi-major axis 0.6770 AU
- Equilibrium temperature 212 K (-61 °C)
- Distance from Earth 1,254.91 light-years
- Earth Similarity Index 0.642
- Travel time at Voyager 1 speed 22,130,302 years
2 siblings around Kepler-174
Kepler-174 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-174 b | Super-Earth | 1.96 | 4.50 | 13.982 | 553 | 2014 |
| Kepler-174 c | Super-Earth | 1.49 | 2.83 | 44.001 | 377 | 2014 |
| Kepler-174 d this | Sub-Neptune | 2.19 | 5.43 | 247.354 | 212 | 2014 |
Kepler-174 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1691of 1978
top 85.4%
This planet
2.19R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-174 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.19 | 11.21 |
| Mass (M⊕) | 1.00 | 5.43 | 317.83 |
| Density (g/cm³) | 5.51 | 2.84 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.13 | 2.53 |
| Insolation (S⊕) | 1.00 | 0.53 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158434144
Gaia DR2
Gaia DR2 2106008493152187392
Gaia DR3
Gaia DR3 2106008493152187392
System
Kepler-174
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 247.35 Earth days (67.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6770 AU.
Transit Fingerprint
Depth
0.129 %
Duration
8.773 h
Impact parameter b
0.090
Rp / R★
0.032383
Transit midpoint (BJD)
2,455,197.1588
Photometric dip
Transit produces a flux drop of 1,292 ppm lasting ≈ 8.77 h.
Extended Orbital Architecture
Planet / star radius ratio
0.032383
Semi-major axis / stellar radius
224.600
Impact parameter (b)
0.090
Transit mid-time (BJD)
2,455,197.1588
Angular separation (arcsec)
1.76000
Eq. Temperature
212K
(-61 °C)
Insolation (S⊕)
0.53
Earth = 1.00
Earth Similarity (ESI)
0.642
0 = alien, 1 = Earth-identical
Within the conservative habitable zone — surface water would be frozen.
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-174
Spectral Class
K-type orange
Effective Temperature
4,880 K — cooler than the Sun (5,778 K)
Estimated Age
4.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.622 R☉
Stellar Mass
0.602 M☉
Metallicity [Fe/H]
-0.56
Extended Stellar Properties
Surface gravity (log g)
4.679 dex
Stellar density
2.872 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.570 mas
Total Proper Motion
42.954 mas/yr
PM Right Ascension
-38.96 mas/yr
PM Declination
-18.09 mas/yr
Galactic Cartesian (pc)
x = 0.216 · y = -0.688 · z = 0.693
Equatorial (J2000)
RA 287.43895° · Dec 43.83201°
Galactic ℓ, b
74.719° · 15.339°
Ecliptic λ, β
301.269° · 65.389°
HTM-20 index
1089021904
Similar Worlds
TOI-880.02
Sub-Neptune · K-type orange
Radius 2.19 R⊕ · 197.9 ly
Kepler-1630 b
Sub-Neptune · K-type orange
Radius 2.19 R⊕ · 1,080.3 ly
Kepler-1042 b
Sub-Neptune · K-type orange
Radius 2.19 R⊕ · 2,149.4 ly
K2-254 c
Sub-Neptune · K-type orange
Radius 2.19 R⊕ · 742.9 ly
K2-247 c
Sub-Neptune · K-type orange
Radius 2.19 R⊕ · 841.9 ly
Kepler-57 c
Sub-Neptune · K-type orange
Radius 2.20 R⊕ · 2,100.9 ly