Key parameters at a glance

A radius of 1.80 Earth radii
A mass of 3.90 Earth masses
Surface gravity around 1.20 g
An orbital period of 5.883 days
Semi-major axis 0.0625 AU
Equilibrium temperature 949 K (676 °C)
Distance from Earth 4,480.83 light-years
Earth Similarity Index 0.298
Travel time at Voyager 1 speed 79,019,415 years

Kepler-1954 b Planet Profile

Physical Specs

Radius

1.80 R⊕

Radius (Jupiter)

0.161 R♃

Mass

3.90 M⊕

Mass (Jupiter)

0.012 M♃

Density

3.66 g/cm³

Surface Gravity

1.20 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.298

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

#251of 1176

top 21.3%

This planet

1.80R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

K2-170 c 1.80 R⊕ PSR B1257+12 d 1.80 R⊕ Kepler-11 b 1.80 R⊕

Metric	Earth	Kepler-1954 b	Jupiter
Radius (R⊕)	1.00	1.80	11.21
Mass (M⊕)	1.00	3.90	317.83
Density (g/cm³)	5.51	3.66	1.33
Surface Gravity (g)	1.00	1.20	2.53
Insolation (S⊕)	1.00	192.09	0.037

Star Catalogue Identifiers

TIC

TIC 273694735

Gaia DR2

Gaia DR2 2078630756707737600

Gaia DR3

Gaia DR3 2078630756707737600

System

Kepler-1954

Percentile among Super-Earth cohort

Radius 1.802 R⊕ · percentile 79 / cohort 1176

Mass 3.900 M⊕ · percentile 71 / cohort 1176

Orbital period 5.88 d · percentile 46 / cohort 1164

Distance 1,373.83 pc · percentile 93 / cohort 1171

ESI 0.298 · percentile 37 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

5.883 days

Semi-major axis

0.0625 AU

Eccentricity

0.000

Inclination

88.75 °

Year Length

A year here lasts approximately 5.88 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0625 AU.

Transit Fingerprint

Depth

0.022 %

Duration

2.466 h

Impact parameter b

0.362

Rp / R★

0.013655

Transit midpoint (BJD)

2,454,969.9504

Photometric dip

Transit produces a flux drop of 218 ppm lasting ≈ 2.47 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013655

Semi-major axis / stellar radius

16.270

Impact parameter (b)

0.362

Transit mid-time (BJD)

2,454,969.9504

Angular separation (arcsec)

0.04550

Eq. Temperature

949K

(676 °C)

Insolation (S⊕)

192.09

Earth = 1.00

Earth Similarity (ESI)

0.298

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-1954

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,840 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.849 R☉

Stellar Mass

0.942 M☉

Metallicity [Fe/H]

-0.24

Extended Stellar Properties

Surface gravity (log g)

4.553 dex

Stellar density

2.526 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,373.83 parsec

Light-years 4,480.83 ly

V-band magnitude

15.88 mag

Voyager-speed travel 79,019,415 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.701 mas

Total Proper Motion

6.635 mas/yr

PM Right Ascension

3.53 mas/yr

PM Declination

-5.62 mas/yr

Galactic Cartesian (pc)

x = 0.341 · y = -0.642 · z = 0.687

Equatorial (J2000)

RA 298.00292° · Dec 43.35459°

Galactic ℓ, b

77.757° · 8.279°

Ecliptic λ, β

317.214° · 62.280°

HTM-20 index

1921373781