Key parameters at a glance

A radius of 1.59 Earth radii
A mass of 3.15 Earth masses
Surface gravity around 1.25 g
An orbital period of 6.892 days
Semi-major axis 0.0732 AU
Equilibrium temperature 1,156 K (883 °C)
Distance from Earth 4,594.72 light-years
Earth Similarity Index 0.250
Travel time at Voyager 1 speed 81,027,929 years

Kepler-1174 b Planet Profile

Physical Specs

Radius

1.59 R⊕

Radius (Jupiter)

0.142 R♃

Mass

3.15 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.31 g/cm³

Surface Gravity

1.25 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.250

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#588of 1176

top 49.9%

This planet

1.59R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-55 f 1.59 R⊕ Kepler-200 c 1.59 R⊕ Kepler-256 b 1.59 R⊕

Metric	Earth	Kepler-1174 b	Jupiter
Radius (R⊕)	1.00	1.59	11.21
Mass (M⊕)	1.00	3.15	317.83
Density (g/cm³)	5.51	4.31	1.33
Surface Gravity (g)	1.00	1.25	2.53
Insolation (S⊕)	1.00	641.81	0.037

Star Catalogue Identifiers

TIC

TIC 123408863

Gaia DR2

Gaia DR2 2104710176078205440

Gaia DR3

Gaia DR3 2104710176078205440

System

Kepler-1174

Percentile among Super-Earth cohort

Radius 1.590 R⊕ · percentile 49 / cohort 1176

Mass 3.150 M⊕ · percentile 45 / cohort 1176

Orbital period 6.89 d · percentile 51 / cohort 1164

Distance 1,408.75 pc · percentile 94 / cohort 1171

ESI 0.250 · percentile 23 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

6.892 days

Semi-major axis

0.0732 AU

Eccentricity

0.000

Inclination

89.84 °

Year Length

A year here lasts approximately 6.89 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0732 AU.

Transit Fingerprint

Depth

0.021 %

Duration

2.456 h

Impact parameter b

0.086

Rp / R★

0.013786

Transit midpoint (BJD)

2,454,965.4643

Photometric dip

Transit produces a flux drop of 214 ppm lasting ≈ 2.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013786

Semi-major axis / stellar radius

21.380

Impact parameter (b)

0.086

Transit mid-time (BJD)

2,454,965.4643

Angular separation (arcsec)

0.05200

Eq. Temperature

1,156K

(883 °C)

Insolation (S⊕)

641.81

Earth = 1.00

Earth Similarity (ESI)

0.250

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1174

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,936 K — hotter than the Sun (5,778 K)

Estimated Age

3.55 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.040 R☉

Stellar Mass

1.040 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

3.891 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,408.75 parsec

Light-years 4,594.72 ly

V-band magnitude

14.27 mag

Voyager-speed travel 81,027,929 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.681 mas

Total Proper Motion

2.836 mas/yr

PM Right Ascension

-2.72 mas/yr

PM Declination

-0.81 mas/yr

Galactic Cartesian (pc)

x = 0.152 · y = -0.724 · z = 0.673

Equatorial (J2000)

RA 281.83143° · Dec 42.29889°

Galactic ℓ, b

71.653° · 18.584°

Ecliptic λ, β

290.927° · 64.881°

HTM-20 index

-1818834611