Confirmed Exoplanet Discovered 2014

Kepler-344 b

A sub-neptune orbiting the g-type yellow (sun-like) Kepler-344, located approximately 3,271.1 light-years from Earth.

Key parameters at a glance

  • A radius of 2.61 Earth radii
  • A mass of 7.32 Earth masses
  • Surface gravity around 1.07 g
  • An orbital period of 21.964 days
  • Semi-major axis 0.1530 AU
  • Equilibrium temperature 643 K (370 °C)
  • Distance from Earth 3,271.15 light-years
  • Earth Similarity Index 0.387
  • Travel time at Voyager 1 speed 57,686,709 years

1 sibling around Kepler-344

Kepler-344 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
Kepler-344 b this Sub-Neptune 2.61 7.32 21.964 643 2014
Kepler-344 c Sub-Neptune 2.95 9.01 125.597 360 2014

Kepler-344 b Planet Profile

Physical Specs

Radius
2.61 R⊕
Radius (Jupiter)
0.233 R♃
Mass
7.32 M⊕
Mass (Jupiter)
0.023 M♃
Density
2.26 g/cm³
Surface Gravity
1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.387
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

#999of 1978

top 50.5%

This planet

2.61R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-214 b 2.61 R⊕ GJ 143 b 2.61 R⊕ TOI-1422 c 2.61 R⊕
Metric Earth Kepler-344 b Jupiter
Radius (R⊕)1.002.6111.21
Mass (M⊕)1.007.32317.83
Density (g/cm³)5.512.261.33
Surface Gravity (g)1.001.072.53
Insolation (S⊕)1.0027.330.037

Star Catalogue Identifiers

TIC

TIC 63289452

Gaia DR2

Gaia DR2 2128263364414395136

Gaia DR3

Gaia DR3 2128263364414395136

System

Kepler-344

Percentile among Sub-Neptune cohort

Radius 2.610 R⊕ · percentile 49 / cohort 1978
Mass 7.320 M⊕ · percentile 45 / cohort 1978
Orbital period 21.96 d · percentile 65 / cohort 1946
Distance 1,002.94 pc · percentile 78 / cohort 1975
ESI 0.387 · percentile 50 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
21.964 days
Semi-major axis
0.1530 AU
Eccentricity
0.000
Inclination
89.50 °

Year Length

A year here lasts approximately 21.96 Earth days (6.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1530 AU.

Transit Fingerprint

Depth

0.069 %

Duration

2.676 h

Impact parameter b

0.290

Rp / R★

0.024600

Transit midpoint (BJD)

2,454,966.0365

Photometric dip

Transit produces a flux drop of 693 ppm lasting ≈ 2.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.024600

Semi-major axis / stellar radius

63.270

Impact parameter (b)

0.290

Transit mid-time (BJD)

2,454,966.0365

Angular separation (arcsec)

0.15300

Eq. Temperature

643K

(370 °C)

Insolation (S⊕)

27.33

Earth = 1.00

Earth Similarity (ESI)

0.387

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. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-344

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,774 K — cooler than the Sun (5,778 K)

Estimated Age

2.51 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.976 R☉

Stellar Mass

0.931 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.451 dex

Stellar density

1.440 g/cm³

Metallicity ratio

[M/H]

Distance
1,002.94 parsec
Light-years 3,271.15 ly
V-band magnitude
15.54 mag
Voyager-speed travel 57,686,709 yr

Multi-band Host Photometry — 16 bands

9.516.316.34B15.54V15.30Gaia15.38Kepler14.79TESS15.93Sloan g15.32Sloan r15.14Sloan i15.02Sloan z14.08J13.71H13.66K13.64W113.72W213.08W39.50W4

Astrometric Data

Parallax

0.969 mas

Total Proper Motion

14.860 mas/yr

PM Right Ascension

-3.53 mas/yr

PM Declination

-14.44 mas/yr

Galactic Cartesian (pc)

x = 0.264 · y = -0.638 · z = 0.723

Equatorial (J2000)

RA 292.49961° · Dec 46.32434°

Galactic ℓ, b

78.581° · 13.113°

Ecliptic λ, β

311.595° · 66.544°

HTM-20 index

-962640268

Similar Worlds

Kepler-1147 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.61 R⊕ · 5,405.6 ly

Kepler-704 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.61 R⊕ · 4,007.9 ly

TOI-1422 c

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.61 R⊕ · 506.0 ly

Kepler-284 c

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.61 R⊕ · 3,365.8 ly

Kepler-1187 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.61 R⊕ · 3,328.5 ly

TOI-2048 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.61 R⊕ · 380.2 ly

Explore Related Categories

Sub-Neptune Planets Transit Discoveries Kepler Mission G-type yellow (Sun-like) Hosts