Key parameters at a glance

A radius of 1.24 Earth radii
A mass of 2.07 Earth masses
Surface gravity around 1.35 g
An orbital period of 27.211 days
Semi-major axis 0.1724 AU
Equilibrium temperature 725 K (452 °C)
Distance from Earth 2,779.05 light-years
Earth Similarity Index 0.432
Travel time at Voyager 1 speed 49,008,568 years

Kepler-1952 b Planet Profile

Physical Specs

Radius

1.24 R⊕

Radius (Jupiter)

0.111 R♃

Mass

2.07 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.98 g/cm³

Surface Gravity

1.35 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.432

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

#14of 570

top 2.3%

This planet

1.24R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-373 c 1.24 R⊕ Kepler-383 c 1.24 R⊕ Kepler-354 d 1.24 R⊕

Metric	Earth	Kepler-1952 b	Jupiter
Radius (R⊕)	1.00	1.24	11.21
Mass (M⊕)	1.00	2.07	317.83
Density (g/cm³)	5.51	5.98	1.33
Surface Gravity (g)	1.00	1.35	2.53
Insolation (S⊕)	1.00	65.27	0.037

Star Catalogue Identifiers

TIC

TIC 158635959

Gaia DR2

Gaia DR2 2103115403182003328

Gaia DR3

Gaia DR3 2103115403182003328

System

Kepler-1952

Percentile among Rocky Terrestrial cohort

Radius 1.239 R⊕ · percentile 98 / cohort 570

Mass 2.070 M⊕ · percentile 89 / cohort 570

Orbital period 27.21 d · percentile 95 / cohort 567

Distance 852.06 pc · percentile 88 / cohort 566

ESI 0.432 · percentile 64 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

27.211 days

Semi-major axis

0.1724 AU

Eccentricity

0.000

Inclination

80.02 °

Year Length

A year here lasts approximately 27.21 Earth days (7.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1724 AU.

Transit Fingerprint

Depth

0.010 %

Duration

10.515 h

Impact parameter b

0.122

Rp / R★

0.009085

Transit midpoint (BJD)

2,454,965.3697

Photometric dip

Transit produces a flux drop of 98 ppm lasting ≈ 10.52 h.

Extended Orbital Architecture

Planet / star radius ratio

0.009085

Semi-major axis / stellar radius

5.610

Impact parameter (b)

0.122

Transit mid-time (BJD)

2,454,965.3697

Angular separation (arcsec)

0.20200

Eq. Temperature

725K

(452 °C)

Insolation (S⊕)

65.27

Earth = 1.00

Earth Similarity (ESI)

0.432

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

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-1952

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,973 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.305 R☉

Stellar Mass

0.922 M☉

Metallicity [Fe/H]

-0.34

Extended Stellar Properties

Surface gravity (log g)

4.171 dex

Stellar density

0.005 g/cm³

Metallicity ratio

[Fe/H]

Distance

852.06 parsec

Light-years 2,779.05 ly

V-band magnitude

13.83 mag

Voyager-speed travel 49,008,568 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

5.892 mas/yr

PM Right Ascension

-2.84 mas/yr

PM Declination

-5.16 mas/yr

Galactic Cartesian (pc)

x = 0.223 · y = -0.684 · z = 0.694

Equatorial (J2000)

RA 288.07641° · Dec 43.95848°

Galactic ℓ, b

75.027° · 14.967°

Ecliptic λ, β

302.412° · 65.376°

HTM-20 index

1100128585