Confirmed Exoplanet Discovered 2014

Kepler-334 c

A super-earth orbiting the g-type yellow (sun-like) Kepler-334, located approximately 1,391.3 light-years from Earth.

Key parameters at a glance

  • A radius of 1.43 Earth radii
  • A mass of 2.63 Earth masses
  • Surface gravity around 1.29 g
  • An orbital period of 12.758 days
  • Semi-major axis 0.1070 AU
  • Equilibrium temperature 822 K (549 °C)
  • Distance from Earth 1,391.35 light-years
  • Earth Similarity Index 0.373
  • Travel time at Voyager 1 speed 24,536,436 years

2 siblings around Kepler-334

Kepler-334 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet Type Radius (R⊕) Mass (M⊕) Period (d) Eq. T (K) Year
Kepler-334 b Rocky Terrestrial 1.12 1.46 5.470 1,090 2014
Kepler-334 c this Super-Earth 1.43 2.63 12.758 822 2014
Kepler-334 d Super-Earth 1.41 2.57 25.098 656 2014

Kepler-334 c Planet Profile

Physical Specs

Radius
1.43 R⊕
Radius (Jupiter)
0.128 R♃
Mass
2.63 M⊕
Mass (Jupiter)
0.008 M♃
Density
4.94 g/cm³
Surface Gravity
1.29 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.373
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

#864of 1176

top 73.4%

This planet

1.43R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-334 c Jupiter
Radius (R⊕)1.001.4311.21
Mass (M⊕)1.002.63317.83
Density (g/cm³)5.514.941.33
Surface Gravity (g)1.001.292.53
Insolation (S⊕)1.0097.210.037

Star Catalogue Identifiers

TIC

TIC 158394479

Gaia DR2

Gaia DR2 2130661880308812800

Gaia DR3

Gaia DR3 2130661880308812800

System

Kepler-334

Percentile among Super-Earth cohort

Radius 1.430 R⊕ · percentile 25 / cohort 1176
Mass 2.630 M⊕ · percentile 24 / cohort 1176
Orbital period 12.76 d · percentile 71 / cohort 1164
Distance 426.59 pc · percentile 42 / cohort 1171
ESI 0.373 · percentile 56 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
12.758 days
Semi-major axis
0.1070 AU
Eccentricity
0.000
Inclination
89.97 °

Year Length

A year here lasts approximately 12.76 Earth days (3.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1070 AU.

Transit Fingerprint

Depth

0.019 %

Duration

4.088 h

Impact parameter b

0.030

Rp / R★

0.012595

Transit midpoint (BJD)

2,454,966.9579

Photometric dip

Transit produces a flux drop of 191 ppm lasting ≈ 4.09 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012595

Semi-major axis / stellar radius

23.597

Impact parameter (b)

0.030

Transit mid-time (BJD)

2,454,966.9579

Angular separation (arcsec)

0.25100

Eq. Temperature

822K

(549 °C)

Insolation (S⊕)

97.21

Earth = 1.00

Earth Similarity (ESI)

0.373

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

Host System: Kepler-334

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,828 K — hotter than the Sun (5,778 K)

Estimated Age

2.75 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.068 R☉

Stellar Mass

1.022 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.385 dex

Stellar density

1.020 g/cm³

Systemic radial velocity

-32.12 km/s

Metallicity ratio

[M/H]

Distance
426.59 parsec
Light-years 1,391.35 ly
V-band magnitude
12.83 mag
Voyager-speed travel 24,536,436 yr

Multi-band Host Photometry — 16 bands

9.113.413.39B12.83V12.73Gaia12.78Kepler12.31TESS13.16Sloan g12.71Sloan r12.61Sloan i12.58Sloan z11.71J11.45H11.41K11.35W111.39W211.25W39.12W4

Astrometric Data

Parallax

2.316 mas

Total Proper Motion

20.642 mas/yr

PM Right Ascension

-6.16 mas/yr

PM Declination

-19.70 mas/yr

Galactic Cartesian (pc)

x = 0.201 · y = -0.650 · z = 0.733

Equatorial (J2000)

RA 287.14062° · Dec 47.11512°

Galactic ℓ, b

77.790° · 16.792°

Ecliptic λ, β

303.309° · 68.581°

HTM-20 index

-1639300833

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