Confirmed Exoplanet Discovered 2014

Kepler-374 d

A super-earth orbiting the g-type yellow (sun-like) Kepler-374, located approximately 4,127.9 light-years from Earth.

Key parameters at a glance

  • A radius of 1.31 Earth radii
  • A mass of 2.27 Earth masses
  • Surface gravity around 1.32 g
  • An orbital period of 5.028 days
  • Semi-major axis 0.0560 AU
  • Equilibrium temperature 1,272 K (999 °C)
  • Distance from Earth 4,127.86 light-years
  • Earth Similarity Index 0.238
  • Travel time at Voyager 1 speed 72,794,859 years

2 siblings around Kepler-374

Kepler-374 d 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-374 b Rocky Terrestrial 1.03 1.08 1.898 1,761 2014
Kepler-374 c Rocky Terrestrial 1.10 1.37 3.283 1,467 2014
Kepler-374 d this Super-Earth 1.31 2.27 5.028 1,272 2014

Kepler-374 d Planet Profile

Physical Specs

Radius
1.31 R⊕
Radius (Jupiter)
0.117 R♃
Mass
2.27 M⊕
Mass (Jupiter)
0.007 M♃
Density
5.55 g/cm³
Surface Gravity
1.32 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.238
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

#1072of 1176

top 91.1%

This planet

1.31R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-374 d Jupiter
Radius (R⊕)1.001.3111.21
Mass (M⊕)1.002.27317.83
Density (g/cm³)5.515.551.33
Surface Gravity (g)1.001.322.53
Insolation (S⊕)1.00548.100.037

Star Catalogue Identifiers

TIC

TIC 270863576

Gaia DR2

Gaia DR2 2077745168807120128

Gaia DR3

Gaia DR3 2077745168807120128

System

Kepler-374

Percentile among Super-Earth cohort

Radius 1.310 R⊕ · percentile 8 / cohort 1176
Mass 2.270 M⊕ · percentile 8 / cohort 1176
Orbital period 5.03 d · percentile 41 / cohort 1164
Distance 1,265.61 pc · percentile 90 / cohort 1171
ESI 0.238 · percentile 20 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
5.028 days
Semi-major axis
0.0560 AU
Eccentricity
0.000
Inclination
88.37 °

Year Length

A year here lasts approximately 5.03 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0560 AU.

Transit Fingerprint

Depth

0.018 %

Duration

3.440 h

Impact parameter b

0.690

Rp / R★

0.012294

Transit midpoint (BJD)

2,454,967.1074

Photometric dip

Transit produces a flux drop of 181 ppm lasting ≈ 3.44 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012294

Semi-major axis / stellar radius

10.550

Impact parameter (b)

0.690

Transit mid-time (BJD)

2,454,967.1074

Angular separation (arcsec)

0.04420

Eq. Temperature

1,272K

(999 °C)

Insolation (S⊕)

548.10

Earth = 1.00

Earth Similarity (ESI)

0.238

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Host System: Kepler-374

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,977 K — hotter than the Sun (5,778 K)

Estimated Age

8.51 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.911 R☉

Stellar Mass

1.033 M☉

Metallicity [Fe/H]

0.11

Extended Stellar Properties

Surface gravity (log g)

4.479 dex

Stellar density

0.450 g/cm³

Metallicity ratio

[M/H]

Distance
1,265.61 parsec
Light-years 4,127.86 ly
V-band magnitude
14.70 mag
Voyager-speed travel 72,794,859 yr

Multi-band Host Photometry — 16 bands

9.215.515.46B14.70V14.66Gaia14.69Kepler14.18TESS15.17Sloan g14.65Sloan r14.48Sloan i14.39Sloan z13.50J13.18H13.14K13.09W113.15W212.57W39.23W4

Astrometric Data

Parallax

0.762 mas

Total Proper Motion

17.598 mas/yr

PM Right Ascension

-6.32 mas/yr

PM Declination

-16.42 mas/yr

Galactic Cartesian (pc)

x = 0.302 · y = -0.674 · z = 0.674

Equatorial (J2000)

RA 294.13789° · Dec 42.37041°

Galactic ℓ, b

75.507° · 10.294°

Ecliptic λ, β

310.757° · 62.436°

HTM-20 index

-859797177

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