Key parameters at a glance

A radius of 3.94 Earth radii
A mass of 14.70 Earth masses
Surface gravity around 0.95 g
An orbital period of 40.069 days
Semi-major axis 0.2234 AU
Equilibrium temperature 560 K (287 °C)
Distance from Earth 3,529.53 light-years
Earth Similarity Index 0.372
Travel time at Voyager 1 speed 62,243,254 years

Kepler-874 b Planet Profile

Physical Specs

Radius

3.94 R⊕

Radius (Jupiter)

0.352 R♃

Mass

14.70 M⊕

Mass (Jupiter)

0.046 M♃

Density

1.32 g/cm³

Surface Gravity

0.95 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.372

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

#12of 1978

top 0.6%

This planet

3.94R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-247 d 3.94 R⊕ EPIC 249893012 d 3.94 R⊕ Kepler-1442 b 3.93 R⊕

Metric	Earth	Kepler-874 b	Jupiter
Radius (R⊕)	1.00	3.94	11.21
Mass (M⊕)	1.00	14.70	317.83
Density (g/cm³)	5.51	1.32	1.33
Surface Gravity (g)	1.00	0.95	2.53
Insolation (S⊕)	1.00	31.62	0.037

Star Catalogue Identifiers

TIC

TIC 271347296

Gaia DR2

Gaia DR2 2077967888633787264

Gaia DR3

Gaia DR3 2077967888633787264

System

Kepler-874

Percentile among Sub-Neptune cohort

Radius 3.940 R⊕ · percentile 99 / cohort 1978

Mass 14.700 M⊕ · percentile 92 / cohort 1978

Orbital period 40.07 d · percentile 80 / cohort 1946

Distance 1,082.16 pc · percentile 83 / cohort 1975

ESI 0.372 · percentile 46 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

40.069 days

Semi-major axis

0.2234 AU

Eccentricity

0.000

Inclination

89.97 °

Year Length

A year here lasts approximately 40.07 Earth days (11.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2234 AU.

Transit Fingerprint

Depth

0.097 %

Duration

6.082 h

Impact parameter b

0.019

Rp / R★

0.031502

Transit midpoint (BJD)

2,454,984.8083

Photometric dip

Transit produces a flux drop of 971 ppm lasting ≈ 6.08 h.

Extended Orbital Architecture

Planet / star radius ratio

0.031502

Semi-major axis / stellar radius

53.460

Impact parameter (b)

0.019

Transit mid-time (BJD)

2,454,984.8083

Angular separation (arcsec)

0.20600

Eq. Temperature

560K

(287 °C)

Insolation (S⊕)

31.62

Earth = 1.00

Earth Similarity (ESI)

0.372

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

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-874

Spectral Class

F-type yellow-white

Effective Temperature

6,020 K — hotter than the Sun (5,778 K)

Estimated Age

3.31 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.130 R☉

Stellar Mass

1.090 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.370 dex

Stellar density

1.800 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,082.16 parsec

Light-years 3,529.53 ly

V-band magnitude

14.82 mag

Voyager-speed travel 62,243,254 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.896 mas

Total Proper Motion

6.965 mas/yr

PM Right Ascension

-3.51 mas/yr

PM Declination

-6.01 mas/yr

Galactic Cartesian (pc)

x = 0.309 · y = -0.663 · z = 0.682

Equatorial (J2000)

RA 294.95685° · Dec 43.01430°

Galactic ℓ, b

76.371° · 10.060°

Ecliptic λ, β

312.482° · 62.820°

HTM-20 index

-1458489439