Confirmed Exoplanet Discovered 2014

Kepler-395 c

A super-earth orbiting the k-type orange Kepler-395, located approximately 1,374.4 light-years from Earth.

Key parameters at a glance

  • A radius of 1.32 Earth radii
  • A mass of 2.30 Earth masses
  • Surface gravity around 1.32 g
  • An orbital period of 34.989 days
  • Semi-major axis 0.1770 AU
  • Equilibrium temperature 341 K (68 °C)
  • Distance from Earth 1,374.36 light-years
  • Earth Similarity Index 0.844
  • Travel time at Voyager 1 speed 24,236,884 years
  • Almost certainly tidally locked to its host star given the close orbit

1 sibling around Kepler-395

Kepler-395 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-395 b Rocky Terrestrial 1.03 1.08 7.054 576 2014
Kepler-395 c this Super-Earth 1.32 2.30 34.989 341 2014

Kepler-395 c Planet Profile

Physical Specs

Radius
1.32 R⊕
Radius (Jupiter)
0.118 R♃
Mass
2.30 M⊕
Mass (Jupiter)
0.007 M♃
Density
5.50 g/cm³
Surface Gravity
1.32 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.844
HZ Position Inner
Controversial No

Discovery

Year 2014
Method Transit
Facility Kepler
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#1049of 1176

top 89.1%

This planet

1.32R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-395 c Jupiter
Radius (R⊕)1.001.3211.21
Mass (M⊕)1.002.30317.83
Density (g/cm³)5.515.501.33
Surface Gravity (g)1.001.322.53
Insolation (S⊕)1.002.110.037

Star Catalogue Identifiers

TIC

TIC 270520765

Gaia DR2

Gaia DR2 2126465903421535744

Gaia DR3

Gaia DR3 2126465903421535744

System

Kepler-395

Percentile among Super-Earth cohort

Radius 1.320 R⊕ · percentile 9 / cohort 1176
Mass 2.300 M⊕ · percentile 9 / cohort 1176
Orbital period 34.99 d · percentile 93 / cohort 1164
Distance 421.38 pc · percentile 42 / cohort 1171
ESI 0.844 · percentile 93 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
34.989 days
Semi-major axis
0.1770 AU
Eccentricity
0.000
Inclination
89.96 °

Year Length

A year here lasts approximately 34.99 Earth days (9.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1770 AU.

Transit Fingerprint

Depth

0.059 %

Duration

4.459 h

Impact parameter b

0.400

Rp / R★

0.022590

Transit midpoint (BJD)

2,454,977.2227

Photometric dip

Transit produces a flux drop of 593 ppm lasting ≈ 4.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.022590

Semi-major axis / stellar radius

67.770

Impact parameter (b)

0.400

Transit mid-time (BJD)

2,454,977.2227

Angular separation (arcsec)

0.42000

Eq. Temperature

341K

(68 °C)

Insolation (S⊕)

2.11

Earth = 1.00

Earth Similarity (ESI)

0.844

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Host System: Kepler-395

Spectral Class

K-type orange

Effective Temperature

4,262 K — cooler than the Sun (5,778 K)

Estimated Age

1.60 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.556 R☉

Stellar Mass

0.623 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.729 dex

Stellar density

3.283 g/cm³

Rotation period

19.92 days

Metallicity ratio

[Fe/H]

Distance
421.38 parsec
Light-years 1,374.36 ly
V-band magnitude
16.59 mag
Voyager-speed travel 24,236,884 yr

Multi-band Host Photometry — 16 bands

9.018.318.30B16.59V15.96Gaia15.99Kepler15.01TESS17.43Sloan g16.02Sloan r15.37Sloan i15.04Sloan z13.82J13.13H12.95K12.89W112.94W212.22W39.04W4

Astrometric Data

Parallax

2.346 mas

Total Proper Motion

14.738 mas/yr

PM Right Ascension

12.96 mas/yr

PM Declination

7.01 mas/yr

Galactic Cartesian (pc)

x = 0.281 · y = -0.647 · z = 0.709

Equatorial (J2000)

RA 293.51119° · Dec 45.13663°

Galactic ℓ, b

77.808° · 11.956°

Ecliptic λ, β

312.088° · 65.177°

HTM-20 index

-1842384413

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