Key parameters at a glance

A radius of 1.20 Earth radii
A mass of 1.87 Earth masses
Surface gravity around 1.30 g
An orbital period of 2.763 days
Semi-major axis 0.0385 AU
Equilibrium temperature 1,231 K (958 °C)
Distance from Earth 3,050.18 light-years
Earth Similarity Index 0.247
Travel time at Voyager 1 speed 53,789,949 years

1 sibling around Kepler-1894

Kepler-1894 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-1894 b this	Rocky Terrestrial	1.20	1.87	2.763	1,231	2021
Kepler-1894 c	Rocky Terrestrial	1.21	1.92	5.054	1,007	2023

Kepler-1894 b Planet Profile

Physical Specs

Radius

1.20 R⊕

Radius (Jupiter)

0.107 R♃

Mass

1.87 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.93 g/cm³

Surface Gravity

1.30 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.247

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#73of 570

top 12.6%

This planet

1.20R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-78 b 1.20 R⊕ Kepler-225 b 1.20 R⊕ Kepler-367 c 1.20 R⊕

Metric	Earth	Kepler-1894 b	Jupiter
Radius (R⊕)	1.00	1.20	11.21
Mass (M⊕)	1.00	1.87	317.83
Density (g/cm³)	5.51	5.93	1.33
Surface Gravity (g)	1.00	1.30	2.53
Insolation (S⊕)	1.00	544.05	0.037

Star Catalogue Identifiers

TIC

TIC 27531854

Gaia DR2

Gaia DR2 2134931077802625792

Gaia DR3

Gaia DR3 2134931077802625792

System

Kepler-1894

Percentile among Rocky Terrestrial cohort

Radius 1.201 R⊕ · percentile 87 / cohort 570

Mass 1.870 M⊕ · percentile 77 / cohort 570

Orbital period 2.76 d · percentile 32 / cohort 567

Distance 935.19 pc · percentile 92 / cohort 566

ESI 0.247 · percentile 25 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.763 days

Semi-major axis

0.0385 AU

Eccentricity

0.000

Inclination

87.48 °

Year Length

A year here lasts approximately 2.76 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0385 AU.

Transit Fingerprint

Depth

0.019 %

Duration

1.893 h

Impact parameter b

0.184

Rp / R★

0.012679

Transit midpoint (BJD)

2,454,965.9951

Photometric dip

Transit produces a flux drop of 185 ppm lasting ≈ 1.89 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012679

Semi-major axis / stellar radius

11.121

Impact parameter (b)

0.184

Transit mid-time (BJD)

2,454,965.9951

Angular separation (arcsec)

0.04120

Eq. Temperature

1,231K

(958 °C)

Insolation (S⊕)

544.05

Earth = 1.00

Earth Similarity (ESI)

0.247

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1894

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,772 K — cooler than the Sun (5,778 K)

Estimated Age

0.50 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.901 R☉

Stellar Mass

0.999 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.528 dex

Stellar density

2.852 g/cm³

Metallicity ratio

[Fe/H]

Distance

935.19 parsec

Light-years 3,050.18 ly

V-band magnitude

15.45 mag

Voyager-speed travel 53,789,949 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.041 mas

Total Proper Motion

4.726 mas/yr

PM Right Ascension

-2.68 mas/yr

PM Declination

3.90 mas/yr

Galactic Cartesian (pc)

x = 0.280 · y = -0.584 · z = 0.762

Equatorial (J2000)

RA 295.58646° · Dec 49.66685°

Galactic ℓ, b

82.594° · 12.750°

Ecliptic λ, β

320.259° · 68.685°

HTM-20 index

-287299514