Key parameters at a glance
- A radius of 1.49 Earth radii
- A mass of 2.83 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 44.001 days
- Semi-major axis 0.2140 AU
- Equilibrium temperature 377 K (104 °C)
- Distance from Earth 1,254.91 light-years
- Earth Similarity Index 0.753
- Travel time at Voyager 1 speed 22,130,302 years
- Almost certainly tidally locked to its host star given the close orbit
2 siblings around Kepler-174
Kepler-174 c 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 this | Super-Earth | 1.49 | 2.83 | 44.001 | 377 | 2014 |
| Kepler-174 d | Sub-Neptune | 2.19 | 5.43 | 247.354 | 212 | 2014 |
Kepler-174 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#766of 1176
top 65.1%
This planet
1.49R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-174 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.49 | 11.21 |
| Mass (M⊕) | 1.00 | 2.83 | 317.83 |
| Density (g/cm³) | 5.51 | 4.70 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 5.30 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158434144
Gaia DR2
Gaia DR2 2106008493152187392
Gaia DR3
Gaia DR3 2106008493152187392
System
Kepler-174
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 44.00 Earth days (12.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2140 AU.
Transit Fingerprint
Depth
0.060 %
Duration
5.177 h
Impact parameter b
0.110
Rp / R★
0.021920
Transit midpoint (BJD)
2,455,043.7591
Photometric dip
Transit produces a flux drop of 600 ppm lasting ≈ 5.18 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021920
Semi-major axis / stellar radius
66.490
Impact parameter (b)
0.110
Transit mid-time (BJD)
2,455,043.7591
Angular separation (arcsec)
0.55600
Eq. Temperature
377K
(104 °C)
Insolation (S⊕)
5.30
Earth = 1.00
Earth Similarity (ESI)
0.753
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
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
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