Key parameters at a glance
- A radius of 2.20 Earth radii
- A mass of 5.48 Earth masses
- Surface gravity around 1.13 g
- An orbital period of 13.767 days
- Semi-major axis 0.1050 AU
- Equilibrium temperature 595 K (322 °C)
- Distance from Earth 1,325.92 light-years
- Earth Similarity Index 0.444
- Travel time at Voyager 1 speed 23,382,575 years
- Almost certainly tidally locked to its host star given the close orbit
4 siblings around Kepler-169
Kepler-169 e shares its host star with 4 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-169 b | Rocky Terrestrial | 1.13 | 1.51 | 3.251 | 962 | 2014 |
| Kepler-169 c | Rocky Terrestrial | 1.21 | 1.92 | 6.195 | 776 | 2014 |
| Kepler-169 d | Super-Earth | 1.25 | 2.10 | 8.348 | 702 | 2014 |
| Kepler-169 e this | Sub-Neptune | 2.20 | 5.48 | 13.767 | 595 | 2014 |
| Kepler-169 f | Sub-Neptune | 2.58 | 7.18 | 87.090 | 321 | 2014 |
Kepler-169 e Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1673of 1978
top 84.5%
This planet
2.20R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-169 e | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.20 | 11.21 |
| Mass (M⊕) | 1.00 | 5.48 | 317.83 |
| Density (g/cm³) | 5.51 | 2.83 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.13 | 2.53 |
| Insolation (S⊕) | 1.00 | 28.55 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 120689253
Gaia DR2
Gaia DR2 2103788854053938816
Gaia DR3
Gaia DR3 2103788854053938816
System
Kepler-169
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 13.77 Earth days (3.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1050 AU.
Transit Fingerprint
Depth
0.068 %
Duration
2.912 h
Impact parameter b
0.790
Rp / R★
0.029660
Transit midpoint (BJD)
2,455,007.8106
Photometric dip
Transit produces a flux drop of 685 ppm lasting ≈ 2.91 h.
Extended Orbital Architecture
Planet / star radius ratio
0.029660
Semi-major axis / stellar radius
15.200
Impact parameter (b)
0.790
Transit mid-time (BJD)
2,455,007.8106
Angular separation (arcsec)
0.25800
Eq. Temperature
595K
(322 °C)
Insolation (S⊕)
28.55
Earth = 1.00
Earth Similarity (ESI)
0.444
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-169
Spectral Class
K-type orange
Effective Temperature
4,997 K — cooler than the Sun (5,778 K)
Estimated Age
0.79 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.763 R☉
Stellar Mass
0.825 M☉
Metallicity [Fe/H]
0.17
Extended Stellar Properties
Surface gravity (log g)
4.582 dex
Stellar density
1.980 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.431 mas
Total Proper Motion
11.727 mas/yr
PM Right Ascension
4.93 mas/yr
PM Declination
10.64 mas/yr
Galactic Cartesian (pc)
x = 0.208 · y = -0.726 · z = 0.655
Equatorial (J2000)
RA 285.99992° · Dec 40.91938°
Galactic ℓ, b
71.509° · 15.178°
Ecliptic λ, β
297.161° · 62.858°
HTM-20 index
1728370323
Similar Worlds
Kepler-229 b
Sub-Neptune · K-type orange
Radius 2.20 R⊕ · 2,694.9 ly
Kepler-240 c
Sub-Neptune · K-type orange
Radius 2.20 R⊕ · 2,436.1 ly
Kepler-1378 b
Sub-Neptune · K-type orange
Radius 2.20 R⊕ · 1,651.8 ly
HD 110067 b
Sub-Neptune · K-type orange
Radius 2.20 R⊕ · 104.9 ly
Kepler-57 c
Sub-Neptune · K-type orange
Radius 2.20 R⊕ · 2,100.9 ly
Kepler-55 c
Sub-Neptune · K-type orange
Radius 2.21 R⊕ · 1,887.8 ly