Key parameters at a glance
- A radius of 2.52 Earth radii
- A mass of 6.90 Earth masses
- Surface gravity around 1.09 g
- An orbital period of 55.188 days
- Semi-major axis 0.3000 AU
- Equilibrium temperature 568 K (295 °C)
- Distance from Earth 3,034.29 light-years
- Earth Similarity Index 0.441
- Travel time at Voyager 1 speed 53,509,781 years
1 sibling around Kepler-361
Kepler-361 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-361 b | Super-Earth | 1.45 | 2.70 | 8.487 | 1,060 | 2014 |
| Kepler-361 c this | Sub-Neptune | 2.52 | 6.90 | 55.188 | 568 | 2014 |
Kepler-361 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1147of 1978
top 57.9%
This planet
2.52R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-361 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.52 | 11.21 |
| Mass (M⊕) | 1.00 | 6.90 | 317.83 |
| Density (g/cm³) | 5.51 | 2.37 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.09 | 2.53 |
| Insolation (S⊕) | 1.00 | 33.95 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 272601590
Gaia DR2
Gaia DR2 2080340222407746816
Gaia DR3
Gaia DR3 2080340222407746816
System
Kepler-361
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 55.19 Earth days (15.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3000 AU.
Transit Fingerprint
Depth
0.036 %
Duration
9.167 h
Impact parameter b
0.050
Rp / R★
0.018970
Transit midpoint (BJD)
2,455,013.7502
Photometric dip
Transit produces a flux drop of 359 ppm lasting ≈ 9.17 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018970
Semi-major axis / stellar radius
47.515
Impact parameter (b)
0.050
Transit mid-time (BJD)
2,455,013.7502
Angular separation (arcsec)
0.32200
Eq. Temperature
568K
(295 °C)
Insolation (S⊕)
33.95
Earth = 1.00
Earth Similarity (ESI)
0.441
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-361
Spectral Class
F-type yellow-white
Effective Temperature
6,169 K — hotter than the Sun (5,778 K)
Estimated Age
3.89 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.343 R☉
Stellar Mass
1.191 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.254 dex
Stellar density
0.380 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.046 mas
Total Proper Motion
15.757 mas/yr
PM Right Ascension
-7.63 mas/yr
PM Declination
-13.78 mas/yr
Galactic Cartesian (pc)
x = 0.309 · y = -0.612 · z = 0.728
Equatorial (J2000)
RA 296.80341° · Dec 46.74110°
Galactic ℓ, b
80.338° · 10.667°
Ecliptic λ, β
318.694° · 65.710°
HTM-20 index
-2126824479
Similar Worlds
Kepler-24 c
Sub-Neptune · F-type yellow-white
Radius 2.51 R⊕ · 3,773.0 ly
Kepler-340 b
Sub-Neptune · F-type yellow-white
Radius 2.53 R⊕ · 2,637.8 ly
HIP 41378 g
Sub-Neptune · F-type yellow-white
Radius 2.54 R⊕ · 346.7 ly
Kepler-126 d
Sub-Neptune · F-type yellow-white
Radius 2.50 R⊕ · 774.3 ly
Kepler-885 b
Sub-Neptune · F-type yellow-white
Radius 2.50 R⊕ · 2,124.3 ly
Kepler-852 b
Sub-Neptune · F-type yellow-white
Radius 2.54 R⊕ · 5,280.6 ly