Key parameters at a glance
- A radius of 2.60 Earth radii
- A mass of 7.26 Earth masses
- Surface gravity around 1.08 g
- An orbital period of 4.803 days
- Distance from Earth 935.18 light-years
- Earth Similarity Index 0.691
- Travel time at Voyager 1 speed 16,491,851 years
- Almost certainly tidally locked to its host star given the close orbit
1 sibling around K2-395
K2-395 b 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 |
|---|---|---|---|---|---|---|
| K2-395 b this | Sub-Neptune | 2.60 | 7.26 | 4.803 | — | 2022 |
| K2-395 c | Sub-Neptune | 3.40 | 11.40 | 8.491 | — | 2022 |
K2-395 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1039of 1978
top 52.5%
This planet
2.60R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | K2-395 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.60 | 11.21 |
| Mass (M⊕) | 1.00 | 7.26 | 317.83 |
| Density (g/cm³) | 5.51 | 2.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.08 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Star Catalogue Identifiers
TIC
TIC 245946724
Gaia DR2
Gaia DR2 3310124801036651008
Gaia DR3
Gaia DR3 3310124801036651008
System
K2-395
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.80 Earth days (1.3% of a terrestrial year).
Transit Fingerprint
Duration
2.500 h
Impact parameter b
0.250
Rp / R★
0.030400
Transit midpoint (BJD)
2,457,825.0089
Extended Orbital Architecture
Planet / star radius ratio
0.030400
Semi-major axis / stellar radius
14.440
Impact parameter (b)
0.250
Transit mid-time (BJD)
2,457,825.0089
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.691
0 = alien, 1 = Earth-identical
Insufficient insolation data. Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Christiansen et al. 2022Instrument
Kepler CCD Array
Publication
2022-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at K2 (12 shown).
Host System: K2-395
Spectral Class
K-type orange
Effective Temperature
5,007 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.783 R☉
Stellar Mass
0.952 M☉
Metallicity [Fe/H]
-0.03
Extended Stellar Properties
Surface gravity (log g)
4.628 dex
Stellar density
1.717 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 12 bands
Astrometric Data
Parallax
3.459 mas
Total Proper Motion
23.311 mas/yr
PM Right Ascension
2.04 mas/yr
PM Declination
-23.22 mas/yr
Galactic Cartesian (pc)
x = 0.321 · y = 0.903 · z = 0.287
Equatorial (J2000)
RA 70.44387° · Dec 16.67434°
Galactic ℓ, b
181.744° · -19.038°
Ecliptic λ, β
71.204° · -5.498°
HTM-20 index
-1943259113
Similar Worlds
K2-155 c
Sub-Neptune · K-type orange
Radius 2.60 R⊕ · 237.4 ly
Kepler-505 b
Sub-Neptune · K-type orange
Radius 2.60 R⊕ · 924.4 ly
K2-90 b
Sub-Neptune · K-type orange
Radius 2.60 R⊕ · 437.7 ly
HD 48948 c
Sub-Neptune · K-type orange
Radius 2.60 R⊕ · 55.1 ly
Kepler-1362 b
Sub-Neptune · K-type orange
Radius 2.60 R⊕ · 2,385.2 ly
Kepler-665 b
Sub-Neptune · K-type orange
Radius 2.60 R⊕ · 1,998.8 ly