Key parameters at a glance

A radius of 1.86 Earth radii
A mass of 4.10 Earth masses
Surface gravity around 1.19 g
An orbital period of 3.701 days
Semi-major axis 0.0465 AU
Equilibrium temperature 1,329 K (1056 °C)
Distance from Earth 2,238.93 light-years
Earth Similarity Index 0.203
Travel time at Voyager 1 speed 39,483,594 years

Kepler-1827 b Planet Profile

Physical Specs

Radius

1.86 R⊕

Radius (Jupiter)

0.166 R♃

Mass

4.10 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.52 g/cm³

Surface Gravity

1.19 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.203

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

#188of 1176

top 15.9%

This planet

1.86R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-28 c 1.86 R⊕ Kepler-191 c 1.86 R⊕ Kepler-299 d 1.86 R⊕

Metric	Earth	Kepler-1827 b	Jupiter
Radius (R⊕)	1.00	1.86	11.21
Mass (M⊕)	1.00	4.10	317.83
Density (g/cm³)	5.51	3.52	1.33
Surface Gravity (g)	1.00	1.19	2.53
Insolation (S⊕)	1.00	1,113.40	0.037

Star Catalogue Identifiers

TIC

TIC 137555923

Gaia DR2

Gaia DR2 2053573711340731392

Gaia DR3

Gaia DR3 2053573711340731392

System

Kepler-1827

Percentile among Super-Earth cohort

Radius 1.856 R⊕ · percentile 84 / cohort 1176

Mass 4.100 M⊕ · percentile 77 / cohort 1176

Orbital period 3.70 d · percentile 28 / cohort 1164

Distance 686.46 pc · percentile 60 / cohort 1171

ESI 0.203 · percentile 13 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.701 days

Semi-major axis

0.0465 AU

Eccentricity

0.000

Inclination

79.31 °

Year Length

A year here lasts approximately 3.70 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0465 AU.

Transit Fingerprint

Depth

0.007 %

Duration

5.408 h

Impact parameter b

0.735

Rp / R★

0.007950

Transit midpoint (BJD)

2,454,966.1607

Photometric dip

Transit produces a flux drop of 69 ppm lasting ≈ 5.41 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007950

Semi-major axis / stellar radius

3.830

Impact parameter (b)

0.735

Transit mid-time (BJD)

2,454,966.1607

Angular separation (arcsec)

0.06770

Eq. Temperature

1,329K

(1056 °C)

Insolation (S⊕)

1,113.40

Earth = 1.00

Earth Similarity (ESI)

0.203

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-1827

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,423 K — cooler than the Sun (5,778 K)

Estimated Age

10.96 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.404 R☉

Stellar Mass

0.915 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.105 dex

Stellar density

0.078 g/cm³

Metallicity ratio

[Fe/H]

Distance

686.46 parsec

Light-years 2,238.93 ly

V-band magnitude

13.23 mag

Voyager-speed travel 39,483,594 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.428 mas

Total Proper Motion

16.659 mas/yr

PM Right Ascension

9.95 mas/yr

PM Declination

13.36 mas/yr

Galactic Cartesian (pc)

x = 0.287 · y = -0.701 · z = 0.653

Equatorial (J2000)

RA 292.25253° · Dec 40.79279°

Galactic ℓ, b

73.426° · 10.833°

Ecliptic λ, β

306.813° · 61.418°

HTM-20 index

1840710694